- NANOG - lists.nanog.org

Back in 80s I read a book ...
by Jonathan Black 23 Oct '25

23 Oct '25

... that used an analogy of 2 neighbors communicating over a fence to explain how TCP works. I'd love to get my hands on a copy of that book. Does anyone else remember that book or the analogy? Jonathan Black Executive Director, NANOG jblack(a)nanog.org | +1 613 612 2019 (mobile) | www.nanog.org ASN 19230

4 3

A surprisingly good interaction (Summit)
by Warren Kumari 20 Oct '25

20 Oct '25

Hi all, This really isn't the sort of mail that I normally send, but I had such a good interaction with an organization that I wanted to share. I have had a server hosted at Summit (summithq.com, formerly ServerCentral / Deft) for ages. After many years of faithful service, it finally threw a drive, and so I shipped them a new one to replace it… All of my interactions with Summit were great - everyone I dealt with was super responsive, competent, helpful, and friendly. It took me a few weeks to get the new machine ready to be shipped, and someone checked in with me a couple of times during this to make sure that everything was OK. The machine finally arrived at their loading dock at ~10:30AM, and was installed (with coordination) before noon. They offered to recycle my old box, and were seriously a pleasure to work with the whole time… This is an odd email to be coming from me — I'm much more inclined to kvetch and snark — but I am really impressed with Summit and their support. W P.S: I have no relationship with Summit, other than being a happy customer.

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IP Address support in spreadsheets?
by Bryan Fields 20 Oct '25

20 Oct '25

Has anyone found a solution to represent IPv4 addresses in a spreadsheet, preferably Google Sheets? I'm not here to debate the use of spreadsheets for tracking IP addresses, just find something better than storing v4 dotted decimal as text in a spreadsheet. We don't need v6 at this time; we're using a spreadsheet for tracking addressing, v6 is beyond us. At minimum we need to store it as a 32 bit INT, and display as dotted decimal. If there's some way to make it aware of subnet slash notation, so much the better. I'm a bit at a loss as to why there's no IPv4 number format with how often spreadsheets are the source of truth in some rather large service providers. Again, not looking for non-spreadsheet solutions to this, and ideally a web interface spreadsheet would be best for sharing. We don't need a real database if it's on the web :-) -- Bryan Fields 727-409-1194 - Voice http://bryanfields.net

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 17 Oct '25

17 Oct '25

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG UKNOF, TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 18 Oct, 2025 IPv4 BGP Table (Global) as seen at Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 1011399 Prefixes after maximum aggregation (per Origin AS): 392621 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498028 Number of IPv4 prefixes with a valid ROA: 348174 Number of IPv4 prefixes with an invalid ROA: 1184 Number of IPv4 prefixes with no ROA: 662041 Total ASes present in the Internet Routing Table: 77469 Prefixes per ASN: 13.06 Origin-only ASes present in the Internet Routing Table: 66545 Origin ASes announcing only one prefix: 27129 Transit ASes present in the Internet Routing Table: 10924 Transit-only ASes present in the Internet Routing Table: 544 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 91 Max AS path prepend of ASN (265605) 87 Prefixes from unregistered ASNs in the Routing Table: 987 Number of instances of unregistered ASNs: 1062 Number of 32-bit ASNs allocated by the RIRs: 47753 Number of 32-bit ASNs visible in the Routing Table: 39156 Prefixes from 32-bit ASNs in the Routing Table: 213744 Number of bogon 32-bit ASNs visible in the Routing Table: 184 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 440 Number of addresses announced to Internet: 3112871168 Equivalent to 185 /8s, 138 /16s and 165 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 330626 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270686 Total APNIC prefixes after maximum aggregation: 80615 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 260298 Unique aggregates announced from the APNIC address blocks: 105904 APNIC Region origin ASes present in the Internet Routing Table: 14855 APNIC Prefixes per ASN: 17.52 APNIC Region origin ASes announcing only one prefix: 4541 APNIC Region transit ASes present in the Internet Routing Table: 1959 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 34 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10398 Number of APNIC addresses announced to Internet: 752261504 Equivalent to 44 /8s, 214 /16s and 153 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 298875 Total ARIN prefixes after maximum aggregation: 134744 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299866 Unique aggregates announced from the ARIN address blocks: 144503 ARIN Region origin ASes present in the Internet Routing Table: 19347 ARIN Prefixes per ASN: 15.50 ARIN Region origin ASes announcing only one prefix: 7097 ARIN Region transit ASes present in the Internet Routing Table: 1951 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5372 Number of ARIN addresses announced to Internet: 1352932352 Equivalent to 80 /8s, 164 /16s and 28 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 280690 Total RIPE prefixes after maximum aggregation: 139001 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280622 Unique aggregates announced from the RIPE address blocks: 181304 RIPE Region origin ASes present in the Internet Routing Table: 29104 RIPE Prefixes per ASN: 9.64 RIPE Region origin ASes announcing only one prefix: 12110 RIPE Region transit ASes present in the Internet Routing Table: 3945 Average RIPE Region AS path length visible: 4.8 Max RIPE Region AS path length visible: 26 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12772 Number of RIPE addresses announced to Internet: 733034112 Equivalent to 43 /8s, 177 /16s and 54 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 125258 Total LACNIC prefixes after maximum aggregation: 30708 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121350 Unique aggregates announced from the LACNIC address blocks: 49402 LACNIC Region origin ASes present in the Internet Routing Table: 11312 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2667 LACNIC Region transit ASes present in the Internet Routing Table: 2521 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 91 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9279 Number of LACNIC addresses announced to Internet: 170651136 Equivalent to 10 /8s, 43 /16s and 238 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 34903 Total AfriNIC prefixes after maximum aggregation: 6879 AfriNIC Deaggregation factor: 5.07 Prefixes being announced from the AfriNIC address blocks: 48823 Unique aggregates announced from the AfriNIC address blocks: 16528 AfriNIC Region origin ASes present in the Internet Routing Table: 1971 AfriNIC Prefixes per ASN: 24.77 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 382 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1335 Number of AfriNIC addresses announced to Internet: 103741184 Equivalent to 6 /8s, 46 /16s and 247 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13913 8760 120 CHINAMOBILE-CN China Mobile Communication 7545 6181 834 600 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4940 4193 77 ERX-CERNET-BKB China Education and Resear 9498 4478 536 313 BBIL-AP BHARTI Airtel Ltd., IN 7552 3977 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3688 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3165 827 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2936 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2534 518 1631 HUTCHISON-AS-AP HGC Global Communications Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14357 41086 5384 AMAZON-02, US 11492 4762 321 793 CABLEONE, US 22773 4274 3085 367 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3685 1320 82 SHAW, CA 396982 3272 4825 465 GOOGLE-CLOUD-PLATFORM, US 749 3219 54766 2470 DNIC-AS-00749, US 4155 3111 233 1748 USDA-1, US 174 3011 8766 797 COGENT-174, US 16625 2903 1238 2170 AKAMAI-AS, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7377 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3983 374 2249 M247, RO 20940 3918 3395 126 AKAMAI-ASN1, NL 12389 3149 2313 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2535 181 1842 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1718 205 1005 HOSTROYALE, IN 8452 1689 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12383 3261 584 UNINET, MX 10620 3479 468 1087 Telmex Colombia S.A., CO 13999 2517 511 347 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1376 2435 257 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1272 371 23 Telefonica del Peru S.A.A., PE 22884 1059 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR 18881 893 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1767 594 28 RAYA-AS, EG 36992 1512 1498 385 ETISALAT-MISR, EG 24863 1251 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1189 102 52 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1010 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 537 56 50 WANANCHI-, KE Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14357 41086 5384 AMAZON-02, US 9808 13913 8760 120 CHINAMOBILE-CN China Mobile Communication 8151 12383 3261 584 UNINET, MX 12479 7377 1711 149 UNI2-AS, ES 7545 6181 834 600 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4940 4193 77 ERX-CERNET-BKB China Education and Resear 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4762 321 793 CABLEONE, US 9498 4478 536 313 BBIL-AP BHARTI Airtel Ltd., IN 22773 4274 3085 367 ASN-CXA-ALL-CCI-22773-RDC, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13913 13793 CHINAMOBILE-CN China Mobile Communications Grou 8151 12383 11799 UNINET, MX 12479 7377 7228 UNI2-AS, ES 7545 6181 5581 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4940 4863 ERX-CERNET-BKB China Education and Research Net 39891 4833 4767 ALJAWWALSTC-AS, SA 9498 4478 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4762 3969 CABLEONE, US 7552 3977 3949 VIETEL-AS-AP Viettel Group, VN 22773 4274 3907 ASN-CXA-ALL-CCI-22773-RDC, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 3356 LEVEL3, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 53587 AZT, US 14.192.20.0/24 Origin: 53587 AZT, US 14.192.20.0/24 Transit: 49612 COGNITIVE-CLOUD-NET, RU 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US Complete listing at https://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:93 /12:300 /13:581 /14:1199 /15:2124 /16:13799 /17:8276 /18:13565 /19:24932 /20:45188 /21:52442 /22:113106 /23:104509 /24:630428 /25:786 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6610 12383 UNINET, MX 12479 6345 7377 UNI2-AS, ES 11492 3576 4762 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3473 3685 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2648 4274 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2402 14357 AMAZON-02, US 30036 2307 2648 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3479 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1779 2:1534 3:942 4:10 5:4802 6:170 7:6 8:1542 9:6 11:172 12:1239 13:557 14:2687 15:405 16:303 17:387 18:906 20:577 21:4 22:188 23:8019 24:2556 25:2 27:2728 29:19 31:3332 32:32 33:1 34:81 35:279 36:4472 37:4552 38:9410 39:1109 40:472 41:4340 42:925 43:2741 44:396 45:19124 46:5183 47:373 49:2080 50:2052 51:597 52:1617 54:353 55:1094 56:11 57:286 58:2194 59:1364 60:1190 61:2923 62:3090 63:1757 64:5809 65:2121 66:5559 67:3135 68:1473 69:4109 70:1043 71:628 72:2999 74:2830 75:1505 76:607 77:2766 78:1900 79:1748 80:2264 81:2137 82:3476 83:1481 84:1991 85:3545 86:1101 87:2384 88:1330 89:4518 90:814 91:8383 92:2812 93:2980 94:4162 95:4507 96:1474 97:312 98:949 99:754 100:71 101:1224 102:4182 103:32129 104:5452 105:777 106:896 107:2794 108:1208 109:4231 110:2248 111:3880 112:2712 113:1595 114:2069 115:2256 116:2085 117:3016 118:2517 119:2021 120:2331 121:1539 122:2818 123:2254 124:1727 125:2911 126:125 128:1579 129:968 130:1431 131:2166 132:794 133:461 134:1621 135:364 136:1492 137:1193 138:2822 139:1585 140:1693 141:1553 142:2169 143:2100 144:1286 145:629 146:2183 147:2135 148:2738 149:2935 150:1285 151:2635 152:2205 153:576 154:7847 155:2188 156:3182 157:1986 158:1441 159:2607 160:3613 161:2000 162:3955 163:2293 164:1954 165:2557 166:1570 167:2114 168:3814 169:783 170:5390 171:1061 172:4481 173:3432 174:906 175:1338 176:3756 177:4772 178:4312 179:2276 180:2747 181:4263 182:3747 183:2342 184:2083 185:21640 186:5354 187:4723 188:4381 189:4405 190:9726 191:1568 192:11417 193:9493 194:7834 195:5598 196:3292 197:3249 198:6258 199:8804 200:8195 201:6370 202:10600 203:10530 204:4645 205:3687 206:4419 207:3866 208:4271 209:5395 210:4945 211:2777 212:4888 213:3919 214:1031 215:52 216:7060 217:3357 218:1630 219:572 220:2195 221:1251 222:884 223:3095 End of report

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Let’s Brainstorm Your Next Big Idea Together! + MORE
by Nanog News 17 Oct '25

17 Oct '25

*** Let’s Brainstorm Your Next Big Idea Together* ------------------------------------------------------------ *Tech Talks by Day. Empowering Conversations by Night.* *You’ve earned it.* After a full day of deep dives, debates, and network wizardry, it’s time to unwind and actually network the fun way. *From Six Flags Over Texas thrills to Beer N’ Gear buzz, *keep the ideas and conversations flowing beyond the conference floor. Meet your peers, reconnect with friends, and make the kind of connections that can only happen IRL. *VIEW ALL SOCIALS* (https://nanog.org/events/nanog-95/socials/) *REGISTER FOR N95* (https://nanog.org/events/nanog-95/register/) *** N95 Social Media Images, Email + Website Banners* ------------------------------------------------------------ *Share with your Network that you are Attending NANOG 95!* Download one of our logos and add it to your email signature line, post it on your socials, or add a banner to your website. *CONFERENCE KIT* (https://nanog.org/events/nanog-95/conference-kit/) *** Reminder: The 2025 Election is Almost Here!* ------------------------------------------------------------ *Please Participate!* NANOG members can view candidate bios, make statements of support, and review the proposed bylaws amendments. *START HERE *(https://nanog.org/members/elections/elections-nominations/) *** Connect, Engage, + Elevate Your Brand* ------------------------------------------------------------ Don't Miss Your Chance to Get in Front of the Most Influential Minds in Network Engineering Limited Spots available. Find out more info about our available sponsorships for Beer N' Gear, NANOG Showcase, NANOG Social, + More! EMAIL US (mailto:sponsorship@nanog.org?subject=Sponsorship) *** Partner with NANOG + Compudopt to Close the Digital Divide* ------------------------------------------------------------ *A Message from Compudopt About How Your Gently Used Devices Can Do Some Good* *Compudopt’s mission is to close the digital divide by providing technology access and education to under-resourced youth and their families. *Every refurbished computer means a student can complete homework, a parent can apply for jobs, and entire families can stay connected to opportunity. *Through our partnership with NANOG 95, we’re working toward an ambitious goal: collecting 3,000 donated devices to be refurbished and placed directly into the hands of those who need them most.* Our device donation program gives new life to gently used technology. We accept laptops, desktops, monitors, tablets, servers, and related accessories from companies and individuals. *We provide full-service ITAD with secure onsite pickup, certified data erasure/destruction, refurbishment and remarketing, end-of-life recycling, and custom ESG reporting; all anchored in rigorous security and compliance.* Our process provides a verified chain of custody, monitored locked transport, restricted facilities with video surveillance, certified destruction with certificates, routine internal/third-party audits, and background-checked, confidentiality-bound staff. By donating, your organization not only diverts e-waste from landfills but also creates lasting impact for families without reliable access to technology. *Learn more *about our donating devices at http://www.compudopt.org/devices NANOG affiliated organizations interested in donating devices, please click HERE (https://airtable.com/appElXNQvUaLJztUn/shrUyu3sTxiPPEZTV) and a member of our team will follow up with you to coordinate logistics. *START HERE *(https://airtable.com/appElXNQvUaLJztUn/shrUyu3sTxiPPEZTV) *** Stay Connected* ------------------------------------------------------------ http://www.facebook.com http://www.instagram.com/nanog_org/ http://www.linkedin.com/company/nanog/ https://www.twitter.com/nanog/ http://nanog.org

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27 years ago
by Randy Bush 17 Oct '25

17 Oct '25

https://en.wikipedia.org/wiki/Jon_Postel it seems much shorter

2 1

Elections MANRS Steering Committee
by Andrei Robachevsky 14 Oct '25

14 Oct '25

Dear all MANRS (https://manrs.org/) is about to hold elections for the renewal of the three seats of the Steering Committee that will become vacant at the end of this year. If you are planning to run for election, *you can submit your nomination until Friday, 17 October 2025, at 23:59 UTC*. We have four candidates so far. The higher the number of nominations, the better chances we will have to have a more diverse Steering Committee, which will benefit us all. *Everyone is eligible to serve on the Steering Committee— MANRS participation is not required.* Once the nomination process is complete, we will move to the next step: voting. MANRS participants will vote online from 28 – 30 October 2025. For further information, please refer to this post: https://manrs.org/2025/09/nominations-open-for-manrs-steering-committee-3/ Best Andrei Robachevsky MANRS Secretariat

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 10 Oct '25

10 Oct '25

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG UKNOF, TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 11 Oct, 2025 IPv4 BGP Table (Global) as seen at Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 1009133 Prefixes after maximum aggregation (per Origin AS): 391938 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 497192 Number of IPv4 prefixes with a valid ROA: 572562 Number of IPv4 prefixes with an invalid ROA: 1558 Number of IPv4 prefixes with no ROA: 434948 Total ASes present in the Internet Routing Table: 77422 Prefixes per ASN: 13.03 Origin-only ASes present in the Internet Routing Table: 66519 Origin ASes announcing only one prefix: 27083 Transit ASes present in the Internet Routing Table: 10903 Transit-only ASes present in the Internet Routing Table: 540 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 57 Max AS path prepend of ASN ( 37447) 53 Prefixes from unregistered ASNs in the Routing Table: 1016 Number of instances of unregistered ASNs: 1054 Number of 32-bit ASNs allocated by the RIRs: 47679 Number of 32-bit ASNs visible in the Routing Table: 39109 Prefixes from 32-bit ASNs in the Routing Table: 212945 Number of bogon 32-bit ASNs visible in the Routing Table: 104 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 453 Number of addresses announced to Internet: 3111947264 Equivalent to 185 /8s, 124 /16s and 140 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 329017 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270360 Total APNIC prefixes after maximum aggregation: 80505 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 260252 Unique aggregates announced from the APNIC address blocks: 105922 APNIC Region origin ASes present in the Internet Routing Table: 14850 APNIC Prefixes per ASN: 17.53 APNIC Region origin ASes announcing only one prefix: 4531 APNIC Region transit ASes present in the Internet Routing Table: 1953 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 35 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10392 Number of APNIC addresses announced to Internet: 752275584 Equivalent to 44 /8s, 214 /16s and 208 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 297245 Total ARIN prefixes after maximum aggregation: 134392 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298046 Unique aggregates announced from the ARIN address blocks: 143867 ARIN Region origin ASes present in the Internet Routing Table: 19340 ARIN Prefixes per ASN: 15.41 ARIN Region origin ASes announcing only one prefix: 7093 ARIN Region transit ASes present in the Internet Routing Table: 1949 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 25 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5356 Number of ARIN addresses announced to Internet: 1352451072 Equivalent to 80 /8s, 156 /16s and 196 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 280582 Total RIPE prefixes after maximum aggregation: 138821 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280121 Unique aggregates announced from the RIPE address blocks: 181062 RIPE Region origin ASes present in the Internet Routing Table: 29071 RIPE Prefixes per ASN: 9.64 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 3950 Average RIPE Region AS path length visible: 4.8 Max RIPE Region AS path length visible: 26 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12752 Number of RIPE addresses announced to Internet: 732564096 Equivalent to 43 /8s, 170 /16s and 10 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 125048 Total LACNIC prefixes after maximum aggregation: 30672 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121242 Unique aggregates announced from the LACNIC address blocks: 49345 LACNIC Region origin ASes present in the Internet Routing Table: 11311 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2654 LACNIC Region transit ASes present in the Internet Routing Table: 2504 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 37 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9277 Number of LACNIC addresses announced to Internet: 170577408 Equivalent to 10 /8s, 42 /16s and 206 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 34882 Total AfriNIC prefixes after maximum aggregation: 6859 AfriNIC Deaggregation factor: 5.09 Prefixes being announced from the AfriNIC address blocks: 49019 Unique aggregates announced from the AfriNIC address blocks: 16594 AfriNIC Region origin ASes present in the Internet Routing Table: 1968 AfriNIC Prefixes per ASN: 24.91 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 382 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1332 Number of AfriNIC addresses announced to Internet: 103835392 Equivalent to 6 /8s, 48 /16s and 103 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13798 8759 117 CHINAMOBILE-CN China Mobile Communication 7545 6185 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4956 4193 77 ERX-CERNET-BKB China Education and Resear 9498 4472 536 313 BBIL-AP BHARTI Airtel Ltd., IN 7552 3948 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3689 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3312 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3138 827 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2930 863 500 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2474 512 1596 HUTCHISON-AS-AP HGC Global Communications Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14309 40997 5362 AMAZON-02, US 11492 4756 321 791 CABLEONE, US 22773 4019 3068 361 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3684 1320 82 SHAW, CA 396982 3272 4824 464 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 174 3168 8767 804 COGENT-174, US 4155 3117 242 1743 USDA-1, US 16625 2875 1224 2156 AKAMAI-AS, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7400 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3986 374 2246 M247, RO 20940 3897 3395 126 AKAMAI-ASN1, NL 12389 3148 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2509 180 1822 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 2022 221 991 HOSTROYALE, IN 8452 1654 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12340 3253 591 UNINET, MX 10620 3477 468 1087 Telmex Colombia S.A., CO 13999 2515 508 351 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1064 68 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 2486 56 TIM SA, BR 11172 907 148 66 Alestra, S. de R.L. de C.V., MX Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1766 600 27 RAYA-AS, EG 36992 1512 1498 385 ETISALAT-MISR, EG 24863 1251 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1189 102 52 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 958 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 574 82 3 KENET-AS, KE 15399 536 55 50 WANANCHI-, KE Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14309 40997 5362 AMAZON-02, US 9808 13798 8759 117 CHINAMOBILE-CN China Mobile Communication 8151 12340 3253 591 UNINET, MX 12479 7400 1711 149 UNI2-AS, ES 7545 6185 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4956 4193 77 ERX-CERNET-BKB China Education and Resear 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4756 321 791 CABLEONE, US 9498 4472 536 313 BBIL-AP BHARTI Airtel Ltd., IN 22773 4019 3068 361 ASN-CXA-ALL-CCI-22773-RDC, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13798 13681 CHINAMOBILE-CN China Mobile Communications Grou 8151 12340 11749 UNINET, MX 12479 7400 7251 UNI2-AS, ES 7545 6185 5581 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4956 4879 ERX-CERNET-BKB China Education and Research Net 39891 4833 4767 ALJAWWALSTC-AS, SA 9498 4472 4159 BBIL-AP BHARTI Airtel Ltd., IN 11492 4756 3965 CABLEONE, US 7552 3948 3920 VIETEL-AS-AP Viettel Group, VN 7155 3859 3774 VIASAT-SP-BACKBONE, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 3356 LEVEL3, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US Complete listing at https://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:93 /12:300 /13:582 /14:1198 /15:2123 /16:13804 /17:8281 /18:13547 /19:24893 /20:45198 /21:52400 /22:112964 /23:104261 /24:628633 /25:785 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6581 12340 UNINET, MX 12479 6365 7400 UNI2-AS, ES 11492 3569 4756 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3472 3684 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2523 4019 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2395 14309 AMAZON-02, US 30036 2299 2639 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3477 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1786 2:1516 3:941 4:10 5:4794 6:170 7:6 8:1550 9:6 11:172 12:1242 13:565 14:2686 15:401 16:304 17:388 18:909 20:574 21:4 22:188 23:7896 24:2654 25:2 27:2735 29:19 31:3360 32:32 33:1 34:81 35:275 36:4453 37:4549 38:9471 39:1100 40:470 41:4367 42:944 43:2715 44:387 45:19140 46:5183 47:369 49:2078 50:2057 51:597 52:1592 54:359 55:1188 56:11 57:285 58:2205 59:1370 60:1190 61:2925 62:3087 63:1766 64:5675 65:2135 66:5071 67:3114 68:1214 69:4001 70:1048 71:630 72:2991 74:2836 75:1503 76:602 77:2775 78:1896 79:1754 80:2261 81:2129 82:3457 83:1473 84:1991 85:3531 86:1102 87:2389 88:1327 89:4511 90:807 91:8383 92:2811 93:2979 94:4174 95:4500 96:1474 97:312 98:948 99:753 100:71 101:1221 102:4137 103:32243 104:5459 105:777 106:895 107:2666 108:1218 109:4223 110:2252 111:3839 112:2667 113:1588 114:2067 115:2266 116:2075 117:3024 118:2536 119:2015 120:2311 121:1536 122:2826 123:2260 124:1729 125:2916 126:125 128:1583 129:969 130:1380 131:2151 132:792 133:462 134:1620 135:363 136:1489 137:1189 138:2822 139:1590 140:1696 141:1547 142:2109 143:2095 144:1262 145:628 146:2190 147:2132 148:2743 149:2926 150:1273 151:2608 152:2174 153:576 154:7890 155:2115 156:3295 157:1974 158:1432 159:2609 160:3608 161:1989 162:3952 163:2291 164:1951 165:2548 166:1570 167:2107 168:3841 169:779 170:5387 171:1023 172:4461 173:3418 174:908 175:1339 176:3812 177:4759 178:4292 179:2277 180:2703 181:4252 182:3747 183:2319 184:2063 185:21645 186:5384 187:4711 188:4376 189:4396 190:9680 191:1546 192:11409 193:9483 194:7798 195:5587 196:3299 197:3248 198:6234 199:8801 200:8209 201:6341 202:10673 203:10537 204:4622 205:3705 206:4437 207:3719 208:4281 209:5372 210:4953 211:2774 212:4844 213:3897 214:1037 215:52 216:6943 217:3356 218:1627 219:568 220:2189 221:1249 222:884 223:3063 End of report

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Level Up: Register for Workshops - Limited Spots + MORE!
by Nanog News 10 Oct '25

10 Oct '25

*** Level Up Your Game at These N95 Workshops!* ------------------------------------------------------------ *Limited Spots Available—Don't Wait! Register (Oct. 27-29) in Arlington, TX* *Don't Miss These Career-Changing Workshops!* *BGP For Data Centers* - This hands-on workshop introduces Border Gateway Protocol (BGP) and its role in modern data center networks. *MORE INFO *(https://nanog.org/events/bgp-for-data-centers/) *RPKI Deep Dive *- Securing the global routing infrastructure is critical. Resource Public Key Infrastructure (RPKI) enhances BGP security through cryptographic route validation. *MORE INFO* (https://nanog.org/events/rpki-deep-dive/) *** WIT Superstars: Shine Bright at the N95 Women in Tech Mixer!* ------------------------------------------------------------ *Taking Place Sunday, Oct 26 at 5pm Before NANOG 95* Calling all female tech superstars to shine your light! Share your expertise, insight and (let’s be real) general badassery. 💪 Come for community, stay for inspiration. *MORE INFO* (https://nanog.org/events/nanog-95/socials/) *** Become a Mentor or Receive Mentorship!* ------------------------------------------------------------ *Join the NANOG Mentorship Program* No one builds the Internet alone. Behind every great network engineer is a mentor who inspired, guided, or believed in them. Our Mentorship Program fuels innovation and keeps our community strong. Sign up to mentor or be mentored. *JOIN NOW *(https://nanog.org/outreach/nanog-mentorship-program/) *** Connect, Engage, + Elevate Your Brand* ------------------------------------------------------------ Don't Miss Your Chance to Get in Front of the Most Influential Minds in Network Engineering Limited Spots available. Find out more info about our available sponsorships for Beer N' Gear, NANOG Showcase, NANOG Social, + More! EMAIL US (sponsorship(a)nanog.org) *** Partner with NANOG + Compudopt to Close the Digital Divide* ------------------------------------------------------------ *A Message from Compudopt About How Your Gently Used Devices Can Do Some Good* At Compudopt, we believe technology should be within reach for all. Yet, across the nation, millions of households lack access to a working computer. That gap limits their opportunities for employment, education, and connection. As part of our holistic digital access solution, we collect, recondition, and redistribute gently-used computers to community members without one at home. That work starts with individuals and companies, like you and yours, donating devices. Join us at NANOG 95 to learn how you can turn devices into opportunity and directly impact thousands of lives. Together, let’s make access possible. Learn more about our donating devices here. ( http://www.compudopt.org/devices) NANOG affiliated organizations interested in donating devices, please click HERE (https://airtable.com/appElXNQvUaLJztUn/shrUyu3sTxiPPEZTV) and a member of our team will follow up with you to coordinate logistics. *START HERE* (https://airtable.com/appElXNQvUaLJztUn/shrUyu3sTxiPPEZTV) *** Stay Connected* ------------------------------------------------------------ http://www.facebook.com http://www.instagram.com/nanog_org/ http://www.linkedin.com/company/nanog/ https://www.twitter.com/nanog/ http://nanog.org

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Are there any AT&T DNS administrators on this list.
by Stephenson, Ryan M CIV DISA PEO CYBER (USA) 09 Oct '25

09 Oct '25

Please contact me off list.

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