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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 11 Jul '25

11 Jul '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 12 Jul, 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: 987670 Prefixes after maximum aggregation (per Origin AS): 383338 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 486045 Number of IPv4 prefixes with a valid ROA: 549687 Number of IPv4 prefixes with an invalid ROA: 1357 Number of IPv4 prefixes with no ROA: 436626 Total ASes present in the Internet Routing Table: 77047 Prefixes per ASN: 12.82 Origin-only ASes present in the Internet Routing Table: 65928 Origin ASes announcing only one prefix: 26899 Transit ASes present in the Internet Routing Table: 11119 Transit-only ASes present in the Internet Routing Table: 561 Average AS path length visible in the Internet Routing Table: 5.2 Max AS path length visible: 80 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1146 Number of instances of unregistered ASNs: 1190 Number of 32-bit ASNs allocated by the RIRs: 46816 Number of 32-bit ASNs visible in the Routing Table: 38574 Prefixes from 32-bit ASNs in the Routing Table: 205812 Number of bogon 32-bit ASNs visible in the Routing Table: 128 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 467 Number of addresses announced to Internet: 3107079552 Equivalent to 185 /8s, 50 /16s and 69 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 323260 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262241 Total APNIC prefixes after maximum aggregation: 78444 APNIC Deaggregation factor: 3.34 Prefixes being announced from the APNIC address blocks: 253012 Unique aggregates announced from the APNIC address blocks: 104938 APNIC Region origin ASes present in the Internet Routing Table: 14738 APNIC Prefixes per ASN: 17.17 APNIC Region origin ASes announcing only one prefix: 4490 APNIC Region transit ASes present in the Internet Routing Table: 1973 Average APNIC Region AS path length visible: 5.5 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10247 Number of APNIC addresses announced to Internet: 749990144 Equivalent to 44 /8s, 179 /16s and 241 /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: 290822 Total ARIN prefixes after maximum aggregation: 131957 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 292729 Unique aggregates announced from the ARIN address blocks: 140814 ARIN Region origin ASes present in the Internet Routing Table: 19221 ARIN Prefixes per ASN: 15.23 ARIN Region origin ASes announcing only one prefix: 7015 ARIN Region transit ASes present in the Internet Routing Table: 2003 Average ARIN Region AS path length visible: 4.6 Max ARIN Region AS path length visible: 75 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5251 Number of ARIN addresses announced to Internet: 1349451776 Equivalent to 80 /8s, 111 /16s and 0 /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: 276284 Total RIPE prefixes after maximum aggregation: 135745 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 275135 Unique aggregates announced from the RIPE address blocks: 176941 RIPE Region origin ASes present in the Internet Routing Table: 28947 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12047 RIPE Region transit ASes present in the Internet Routing Table: 4010 Average RIPE Region AS path length visible: 5.3 Max RIPE Region AS path length visible: 69 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12548 Number of RIPE addresses announced to Internet: 731448960 Equivalent to 43 /8s, 153 /16s and 6 /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: 124830 Total LACNIC prefixes after maximum aggregation: 29736 LACNIC Deaggregation factor: 4.20 Prefixes being announced from the LACNIC address blocks: 121176 Unique aggregates announced from the LACNIC address blocks: 49023 LACNIC Region origin ASes present in the Internet Routing Table: 11280 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2653 LACNIC Region transit ASes present in the Internet Routing Table: 2547 Average LACNIC Region AS path length visible: 5.9 Max LACNIC Region AS path length visible: 75 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9240 Number of LACNIC addresses announced to Internet: 171227648 Equivalent to 10 /8s, 52 /16s and 186 /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: 32347 Total AfriNIC prefixes after maximum aggregation: 6684 AfriNIC Deaggregation factor: 4.84 Prefixes being announced from the AfriNIC address blocks: 45151 Unique aggregates announced from the AfriNIC address blocks: 13913 AfriNIC Region origin ASes present in the Internet Routing Table: 1924 AfriNIC Prefixes per ASN: 23.47 AfriNIC Region origin ASes announcing only one prefix: 694 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 6.1 Max AfriNIC Region AS path length visible: 80 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1288 Number of AfriNIC addresses announced to Internet: 104701952 Equivalent to 6 /8s, 61 /16s and 160 /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 11813 8762 118 CHINAMOBILE-CN China Mobile Communication 7545 6146 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4813 4192 76 ERX-CERNET-BKB China Education and Resear 9498 4466 536 313 BBIL-AP BHARTI Airtel Ltd., IN 7552 3911 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3704 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3294 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2906 863 521 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2655 812 180 CMNET-JIANGSU-AP China Mobile communicati 4766 2323 11519 609 KIXS-AS-KR Korea Telecom, KR 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 13657 40958 5252 AMAZON-02, US 11492 4787 317 605 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3637 1320 82 SHAW, CA 174 3412 8769 845 COGENT-174, US 22773 3337 3034 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3225 54767 2476 DNIC-AS-00749, US 396982 3195 3854 432 GOOGLE-CLOUD-PLATFORM, US 16625 2962 1245 2205 AKAMAI-AS, US 4155 2849 216 1737 USDA-1, 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 7637 1713 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3945 3395 127 AKAMAI-ASN1, NL 9009 3777 360 2106 M247, RO 12389 3126 2318 876 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2402 361 582 TELLCOM-AS, TR 212238 2356 168 1723 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1558 1852 14 TE-AS TE-AS, EG 8551 1427 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet 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 12292 3255 575 UNINET, MX 10620 3513 481 1023 Telmex Colombia S.A., CO 13999 2530 538 352 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1369 2437 264 Claro NXT Telecomunicacoes Ltda, BR 3816 1346 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1197 371 22 Telefonica del Peru S.A.A., PE 11664 1188 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1051 67 377 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1023 373 162 Axtel, S.A.B. 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 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36903 1249 554 96 MT-MPLS, MA 24835 1187 633 33 RAYA-AS, EG 36992 887 1436 293 ETISALAT-MISR, EG 36935 753 520 39 Vodafone-, EG 24863 638 389 22 LINKdotNET-AS, EG 37069 600 1112 11 MOBINIL, EG 36914 570 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 554 58 62 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 13657 40958 5252 AMAZON-02, US 8151 12292 3255 575 UNINET, MX 9808 11813 8762 118 CHINAMOBILE-CN China Mobile Communication 12479 7637 1713 150 UNI2-AS, ES 7545 6146 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4813 4192 76 ERX-CERNET-BKB China Education and Resear 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4787 317 605 CABLEONE, US 9498 4466 536 313 BBIL-AP BHARTI Airtel Ltd., IN 20940 3945 3395 127 AKAMAI-ASN1, NL Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12292 11717 UNINET, MX 9808 11813 11695 CHINAMOBILE-CN China Mobile Communications Grou 12479 7637 7487 UNI2-AS, ES 7545 6146 5525 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4813 4737 ERX-CERNET-BKB China Education and Research Net 39891 4798 4735 ALJAWWALSTC-AS, SA 11492 4787 4182 CABLEONE, US 9498 4466 4153 BBIL-AP BHARTI Airtel Ltd., IN 7552 3911 3884 VIETEL-AS-AP Viettel Group, VN 20940 3945 3818 AKAMAI-ASN1, NL 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 46887 CROWNCASTLE-AS46887, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 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: 6939 HURRICANE, 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:578 /14:1194 /15:2127 /16:13773 /17:8293 /18:13500 /19:24675 /20:44223 /21:52038 /22:111300 /23:102921 /24:611792 /25:795 /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 12479 6570 7637 UNI2-AS, ES 8151 6514 12292 UNINET, MX 11492 3581 4787 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3637 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2490 3337 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2341 13657 AMAZON-02, US 30036 2267 2608 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2200 3513 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1760 2:1504 3:850 4:10 5:4714 6:162 7:6 8:1581 9:1 11:172 12:1342 13:457 14:2597 15:365 16:285 17:378 18:896 20:556 21:4 22:188 23:7696 24:2673 25:2 27:2742 29:19 31:3329 32:38 33:1 34:80 35:258 36:3539 37:4594 38:9430 39:911 40:251 41:4114 42:936 43:2660 44:369 45:18553 46:5090 47:336 49:1897 50:1900 51:593 52:1554 54:324 55:1108 56:11 57:274 58:2122 59:1347 60:1174 61:2802 62:2881 63:1798 64:5513 65:2168 66:4711 67:3090 68:1094 69:3877 70:1049 71:624 72:2859 74:2789 75:1504 76:612 77:2761 78:1899 79:1716 80:2207 81:2068 82:3157 83:1456 84:1861 85:3459 86:1090 87:2386 88:1316 89:4433 90:774 91:8416 92:2753 93:2940 94:4115 95:4397 96:1447 97:311 98:961 99:697 100:72 101:1191 102:3894 103:32239 104:5267 105:775 106:976 107:2638 108:1264 109:4169 110:2241 111:3334 112:2222 113:1572 114:1960 115:2179 116:2063 117:2555 118:2463 119:1949 120:2138 121:1382 122:2798 123:2219 124:1684 125:2910 126:91 128:1590 129:970 130:1295 131:2047 132:779 133:450 134:1575 135:349 136:1430 137:1183 138:2842 139:1574 140:1640 141:1527 142:1918 143:1967 144:1189 145:560 146:2180 147:2103 148:2702 149:2935 150:1228 151:2210 152:2079 153:526 154:7642 155:1821 156:3052 157:1918 158:1342 159:2499 160:3606 161:1850 162:3879 163:2229 164:1873 165:2078 166:1513 167:2024 168:3988 169:783 170:5131 171:1005 172:4418 173:3359 174:919 175:1312 176:3708 177:4767 178:3951 179:2327 180:2607 181:4112 182:3492 183:1906 184:2077 185:21560 186:5250 187:4634 188:4263 189:4337 190:9589 191:1481 192:11335 193:9477 194:7782 195:5587 196:3267 197:3150 198:6208 199:8586 200:8247 201:6372 202:10575 203:10562 204:4598 205:3671 206:4527 207:3621 208:4272 209:5163 210:4859 211:2677 212:4563 213:3791 214:1024 215:46 216:6757 217:3159 218:1417 219:562 220:2142 221:1185 222:844 223:2627 End of report

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** Last Call for Early Bird Pricing for N95! Annual Report + How NANOG Women in Tech Mixers Rewrote the...
by Nanog News 11 Jul '25

11 Jul '25

*** Last Call for Early Bird Pricing for N95!* ------------------------------------------------------------ *Early Bird Pricing Ends Monday!* ***Please Note Important Room Block Information: Access to the room block is restricted to registered attendees only. More info here. ( https://nanog.org/events/nanog-95/venue/) *REGISTER NOW* (https://nanog.org/events/nanog-95/register/) *** 2024 Annual Report is Ready!* ------------------------------------------------------------ *In 2024, NANOG Focused on Three Key Priorities.* The first was strengthening our relevance within the community, which was reflected in increased meeting attendance. The second was making meaningful progress toward achieving financial break-even. The third was the Board’s work to identify and onboard a new Executive Director, continuing our commitment to operational excellence. *VIEW ANNUAL REPORT* ( https://storage.googleapis.com/site-media-prod/documents/NANOG-Annual-Repor… ) *** How NANOG WIT Mixers Rewrote the Rules of Networking, And Why It’s Working* ------------------------------------------------------------ Something new is happening at the NANOG Women in Tech (WIT) Mixers, and attendees are here for it. What used to be a traditional networking gathering with friendly ice-breakers and polite conversations has evolved into a playful, high-energy event that creates impactful + authentic connections in a short amount of time. *READ MORE *( https://nanog.org/stories/articles/how-nanog-women-in-tech-rewrote-the-rule… ) *** NANOG Social at Six Flags Over Texas Amusement Park Sponsorships Available!* ------------------------------------------------------------ Reach out to Shawn Winstead at swinstead(a)nanog.org for more info. *** 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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Important Deadline for MANRS Participants
by Steven Wallace 11 Jul '25

11 Jul '25

Important deadline for MANRS Participants! If your organization is a MANRS Participant, please cast your vote, yea or nay, for proposed changes to the MANRS Charter. For the changes to be adopted, at least 10% of MANRS Participants must vote, and 2/3rd of the votes must be in favor of the changes. I participated in the changes. They are essential for MANRS moving forward. Please cast your vote! https://manrs.org/2025/06/next-steps-in-the-manrs-charter-review-process/ Steven Wallace Director - Routing Integrity Internet2 ssw(a)internet2.edu

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Captchas on Cloudflare-Proxied Sites
by Johannes Müller Aguilar 09 Jul '25

09 Jul '25

Hello, We operate as a cloud service provider, and much of our traffic is indeed—per Cloudflare’s terminology—“bot traffic.” For about a month, users behind IP addresses we announce have been prompted to solve captchas when accessing Cloudflare-proxied sites. When we contacted Cloudflare support, they referred us to their customers (e.g., Stack Overflow, OpenAI), but support from those sites directed us back to Cloudflare. I reviewed Cloudflare Radar but found it limited in actionable insights. We also announce prefixes to Cloudflare where the originating AS primarily serves end-users—and where Radar shows over 80% human traffic—yet users still encounter captchas, suggesting the issue may be related to our announcing AS. Has anyone experienced this or found effective ways to resolve it? Any advice or pointers would be greatly appreciated. Best regards, Johannes

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Reminder to Submit Presentations for NANOG 95
by NANOG Program 09 Jul '25

09 Jul '25

NANOG Community at large, The NANOG Program Committee (PC) would like to remind you that we are now accepting proposals for in-person or live remote presentations at all sessions of NANOG 95, taking place in Arlington, TX on 27-29 October 2025. Below is a summary of key details and dates from the Call For Presentations on the NANOG website, which can be found at https://www.nanog.org/program/call-presentations/. Requested Topics: We are aiming to spotlight presentations throughout NANOG 95 focusing on Enterprise Networks and Wireless Technology. Topics can range from LAN operations, to using cellular networks for emergency connectivity, to LoRaWAN, to campus Wifi and mobile networks, to new and innovative methods of connecting devices across a wider physical area. In addition to the spotlight topic, we are always accepting talks on other topics relevant to our audience. Based on feedback from our recent surveys, we have seen numerous requests for the following topics: - Network Automation - designing networks for AI traffic, different approaches for different objectives - Future of Networking - forecast for changes in technology, design, applications, protocols - Research & Education - what research is happening now in network operations - Security - various protocols and developments, AI implications - Optical Networking - technology, practices, deployment options, troubleshooting - Tutorials - at all skill levels, IPv6, BGP, Segment Routing, DNS, MPLS, VxLAN - See the NANOG Call for Presentations <https://nanog.org/program/call-presentations/> for an extensive listing of requested topics We are looking to schedule 1,600 minutes of content between General Session and Breakout Rooms for NANOG 95, and have confirmed 285 minutes to date - so don’t wait! Presentation abstracts are welcomed now and draft slides should be submitted no later than Monday, 08 September 2025 to be considered for NANOG 95. Presentations may cover current technologies, soon-to-be deployed technologies, and industry innovation. Vendors are welcome to submit talks which cover relevant technologies and capabilities, but presentations should not be promotional or discuss proprietary solutions. The primary speaker, moderator, or author should submit a presentation proposal and abstract via the Program Committee Tool at: https://www.nanog.org/meetings/submit-presentation/ - Sign in with your Profile Account - Select the type of talk you propose to present, and complete the form Timeline for submission and proposal review: - Submitter enters abstract (and draft slides if possible) in the Program Committee Tool prior to the deadline for slide submission. - PC performs initial review and assigns a “shepherd” to help develop the submission — typically within 2 weeks. - Submitter develops draft slides of talk, if not already submitted with the initial proposal. Please submit initial draft slides early — the PC does not evaluate submissions until draft slides are available for review. NANOG Staff is available to assist with slide templates upon request from the submitter. - Panel and Track submissions should provide a topic list and intended/confirmed participants in the abstract. - PC reviews the slides and continues to work with Submitter as needed to develop the topic and content. - FINAL SUBMISSION DEADLINE Draft presentation slides should be submitted prior to the published deadline for slides (08 September 2025). - PC evaluates submissions to determine presentations for the agenda (posted on 22 September 2025). - Submitters notified. - Agenda assembled and posted. - Final presentation slides must be submitted prior to the published deadline for slides (20 October 2025 for in person + live remote presentations). If you think you have an interesting topic but want feedback or suggestions for developing an idea into a presentation, please email the PC ( nanogpc(a)nanog.org) and a representative will respond to you in a timely manner. Otherwise, submit your talk, tutorial, track, or panel proposal to the Program Committee Tool at your earliest convenience. We look forward to reviewing your submission! NANOG 95 Calendar of Events Date Event/Deadline June 23, 2025 CFP Reminder Announcement July 21, 2025 Call for Proposals Reminder #2 September 08, 2025 DRAFT Presentation Slides Due September 08, 2025 Topics List Published September 22, 2025 Meeting Agenda Published October 20, 2025 FINAL Slides Due October 26, 2025 On-Site Lightning Talk Submissions Open Final slides for accepted presentations must be submitted by Monday, 20 October 2025. Materials received after that date, and prior to 24 October may be accepted based on Shepherd availability, but is not guaranteed. Materials received after 24 October will not be accepted. We look forward to seeing you in October! Sincerely, Adair Thaxton Program Committee Chair Sent on behalf of the NANOG PC

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Spoofer Report for NANOG for Jun 2025
by CAIDA Spoofer Project 08 Jul '25

08 Jul '25

In response to feedback from operational security communities, CAIDA's source address validation measurement project (https://spoofer.caida.org) is automatically generating monthly reports of ASes originating prefixes in BGP for systems from which we received packets with a spoofed source address. We are publishing these reports to network and security operations lists in order to ensure this information reaches operational contacts in these ASes. This report summarises tests conducted within usa, can. Inferred improvements during Jun 2025: ASN Name Fixed-By 19230 NANOG 2025-06-10 27364 ACS-INTERNET 2025-06-12 40676 AS40676 2025-06-29 Further information for the inferred remediation is available at: https://spoofer.caida.org/remedy.php Source Address Validation issues inferred during Jun 2025: ASN Name First-Spoofed Last-Spoofed 40676 AS40676 2016-08-29 2025-06-24 63296 AWBROADBAND 2017-09-01 2025-06-26 22883 CONDENAST 2019-05-29 2025-06-30 21804 ACCESS-SK 2019-06-09 2025-06-24 12183 TALKIE-COMMUNICATIONS 2022-12-10 2025-06-26 400282 2023-04-27 2025-06-25 393577 SCCNET 2023-05-03 2025-06-26 61461 Airtek Solutions C.A. 2023-05-13 2025-06-26 20119 ARROW 2023-10-19 2025-06-27 394684 WISPERNET 2024-01-17 2025-06-27 393530 TLU 2024-05-22 2025-06-28 19935 CRRS 2024-05-29 2025-06-26 30475 WEHOSTWEBSITES-COM 2024-09-30 2025-06-09 54334 ROYA 2025-03-13 2025-06-25 16739 MIDCO-NET-INV 2025-03-19 2025-06-04 138915 KAOPU-HK 2025-03-30 2025-06-06 273843 2025-04-02 2025-06-30 400175 2025-06-08 2025-06-09 213953 2025-06-09 2025-06-09 42337 RESPINA 2025-06-09 2025-06-09 Further information for these tests where we received spoofed packets is available at: https://spoofer.caida.org/recent_tests.php?country_include=usa,can&no_block… Please send any feedback or suggestions to spoofer-info(a)caida.org

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is it just me or...
by Michael Thomas 07 Jul '25

07 Jul '25

I'm using Thunderbird to read mail and lately the only thing I've seen in the mail.from address is |North American Network Operators Group | and not the author's address which makes it really hard to tell who is talking to whom. I is just me, or has there been a list config change that is causing this? Mike

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Re: SPF/DKIM/DMARC et.al.: REALLY LONG [was: is it just me or...]
by bzs＠theworld.com 07 Jul '25

07 Jul '25

On July 6, 2025 at 17:30 johnl(a)taugh.com (John Levine) wrote: > > On 06-07-2025 17:05, bzs(a)theworld.com wrote: > > > The B2B spam I get from throwaway accounts at large mail > > > providers is probably only 1000 or less at a time since that's all you can > > > send that way. I do not think there is one master criminal with a million > > > throwaway Gmail accounts. > > > > You've moved from spam to ham, no? > > It's spam, bulk mail sent to people who didn't ask for it. Some offer > SEO, some offer financing for my non-existent business, it's all clearly > purchased lists sending mail in bulk to strangers. I probably have a broader definition of "spam" than most which amounts to: if I'm not being paid to deliver it by the sender then it's spam. > > > Do you have to show ID to drop a stamped envelope in a postal box? > > Wait a minute. Stamps? Where did the stamps come from? Who issues > them? Who decides if they're real? Perhaps you should reread my white > paper more carefully. You brought up IDs I was just reacting... >Beyond the fact that the underlying assumption is wrong, that's extremely >unlikely to work unless you envision a world where you have to show ID and >get a license to send mail. > R's, > John > > > > At this point I get a whole lot of mail from Salesforce and Sendgrid. I > > > would love to block them but unfortunately they also send a lot of mail my > > > users want, so I have to do hacks that try to recognize the customer and > > > let through the less bad ones. It is painfully clear that they have made > > > business decisions not to spend enough money on abuse management to clean > > > this up. The mail gets through, why should they? > > > > Again this is what is generally called "ham" unless you want > > to apply it to anything you're not personally interested in. > > Again, bulk mail sent to strangers. It's the normal definition of spam. > I'm not talking about companies that send you ads after you order > something, this is spam sent to complete strangers. I don't disagree, I just think the tide of "ham" is rising rapidly and this reasonable-sounding definition of spam is becoming unworkable. And, I'll add, it was pretty much inevitable, tragedy of the commons and all that. -- -Barry Shein Software Tool & Die | bzs(a)TheWorld.com | http://www.TheWorld.com Purveyors to the Trade | Voice: +1 617-STD-WRLD | 800-THE-WRLD The World: Since 1989 | A Public Information Utility | *oo*

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Re: SPF/DKIM/DMARC et.al.: REALLY LONG [was: is it just me or...]
by John R. Levine 07 Jul '25

07 Jul '25

On 06-07-2025 17:05, bzs(a)theworld.com wrote: > > The B2B spam I get from throwaway accounts at large mail > > providers is probably only 1000 or less at a time since that's all you can > > send that way. I do not think there is one master criminal with a million > > throwaway Gmail accounts. > > You've moved from spam to ham, no? It's spam, bulk mail sent to people who didn't ask for it. Some offer SEO, some offer financing for my non-existent business, it's all clearly purchased lists sending mail in bulk to strangers. > Do you have to show ID to drop a stamped envelope in a postal box? Wait a minute. Stamps? Where did the stamps come from? Who issues them? Who decides if they're real? Perhaps you should reread my white paper more carefully. R's, John > > At this point I get a whole lot of mail from Salesforce and Sendgrid. I > > would love to block them but unfortunately they also send a lot of mail my > > users want, so I have to do hacks that try to recognize the customer and > > let through the less bad ones. It is painfully clear that they have made > > business decisions not to spend enough money on abuse management to clean > > this up. The mail gets through, why should they? > > Again this is what is generally called "ham" unless you want > to apply it to anything you're not personally interested in. No, bulk mail sent to strangers. It's the normal definition of spam. I'm not talking about companies that send you ads after you order something, this is spam sent by people I've never heard of and never contacted.

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Google routes from IX vs PNI
by Nathanael Cariaga 06 Jul '25

06 Jul '25

Hi, I was wondering if anyone from the Google Networking team could contact me off the list. I was hoping to clarify if there was any difference on obtained Google routes from an IX vs from a PNI.

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