- NANOG - lists.nanog.org

Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 12 Dec '25

12 Dec '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 13 Dec, 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: 1021801 Prefixes after maximum aggregation (per Origin AS): 394294 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504949 Number of IPv4 prefixes with a valid ROA: 598188 Number of IPv4 prefixes with an invalid ROA: 1541 Number of IPv4 prefixes with no ROA: 422072 Total ASes present in the Internet Routing Table: 77636 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66693 Origin ASes announcing only one prefix: 27130 Transit ASes present in the Internet Routing Table: 10943 Transit-only ASes present in the Internet Routing Table: 550 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 69 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1012 Number of instances of unregistered ASNs: 1051 Number of 32-bit ASNs allocated by the RIRs: 48196 Number of 32-bit ASNs visible in the Routing Table: 39455 Prefixes from 32-bit ASNs in the Routing Table: 218950 Number of bogon 32-bit ASNs visible in the Routing Table: 110 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 751 Number of addresses announced to Internet: 3105581696 Equivalent to 185 /8s, 27 /16s and 106 /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: 333802 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276525 Total APNIC prefixes after maximum aggregation: 81224 APNIC Deaggregation factor: 3.40 Prefixes being announced from the APNIC address blocks: 263596 Unique aggregates announced from the APNIC address blocks: 106401 APNIC Region origin ASes present in the Internet Routing Table: 14935 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4564 APNIC Region transit ASes present in the Internet Routing Table: 1982 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: 10490 Number of APNIC addresses announced to Internet: 753727488 Equivalent to 44 /8s, 236 /16s and 248 /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: 299829 Total ARIN prefixes after maximum aggregation: 134981 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300052 Unique aggregates announced from the ARIN address blocks: 145830 ARIN Region origin ASes present in the Internet Routing Table: 19370 ARIN Prefixes per ASN: 15.49 ARIN Region origin ASes announcing only one prefix: 7080 ARIN Region transit ASes present in the Internet Routing Table: 1936 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: 5423 Number of ARIN addresses announced to Internet: 1342338304 Equivalent to 80 /8s, 2 /16s and 117 /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: 282466 Total RIPE prefixes after maximum aggregation: 139865 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283211 Unique aggregates announced from the RIPE address blocks: 183606 RIPE Region origin ASes present in the Internet Routing Table: 29130 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12084 RIPE Region transit ASes present in the Internet Routing Table: 3952 Average RIPE Region AS path length visible: 4.8 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12867 Number of RIPE addresses announced to Internet: 735161728 Equivalent to 43 /8s, 209 /16s and 173 /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: 126086 Total LACNIC prefixes after maximum aggregation: 30557 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121998 Unique aggregates announced from the LACNIC address blocks: 49719 LACNIC Region origin ASes present in the Internet Routing Table: 11318 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2670 LACNIC Region transit ASes present in the Internet Routing Table: 2523 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9319 Number of LACNIC addresses announced to Internet: 170628864 Equivalent to 10 /8s, 43 /16s and 151 /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: 35883 Total AfriNIC prefixes after maximum aggregation: 6979 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 52193 Unique aggregates announced from the AfriNIC address blocks: 18777 AfriNIC Region origin ASes present in the Internet Routing Table: 1994 AfriNIC Prefixes per ASN: 26.18 AfriNIC Region origin ASes announcing only one prefix: 732 AfriNIC Region transit ASes present in the Internet Routing Table: 382 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1356 Number of AfriNIC addresses announced to Internet: 103358720 Equivalent to 6 /8s, 41 /16s and 33 /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 13358 8760 123 CHINAMOBILE-CN China Mobile Communication 7545 6041 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 5026 4193 77 ERX-CERNET-BKB China Education and Resear 9498 4609 541 339 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3731 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3336 827 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3328 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2960 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2519 158 568 LCS-AS-AP LARUS Limited, HK 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 14182 38434 5410 AMAZON-02, US 22773 4780 3116 370 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4692 311 939 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3316 4863 490 GOOGLE-CLOUD-PLATFORM, US 749 3208 54744 2459 DNIC-AS-00749, US 16625 2857 1223 2141 AKAMAI-AS, US 36352 2818 229 904 AS-COLOCROSSING, US 174 2719 8772 871 COGENT-174, 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 7286 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3944 369 2259 M247, RO 20940 3850 3394 122 AKAMAI-ASN1, NL 12389 3175 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2538 180 1840 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1681 1852 14 TE-AS TE-AS, EG 203020 1616 242 783 HOSTROYALE, IN 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 12683 3293 585 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2514 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1374 2432 267 Claro NXT Telecomunicacoes Ltda, BR 11664 1364 278 33 Techtel LMDS Comunicaciones Interactivas 3816 1337 768 219 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1023 2486 56 TIM SA, 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 1943 482 23 RAYA-AS, EG 36992 1685 1509 399 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1084 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1037 520 32 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 545 82 3 KENET-AS, KE 15399 534 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 14182 38434 5410 AMAZON-02, US 9808 13358 8760 123 CHINAMOBILE-CN China Mobile Communication 8151 12683 3293 585 UNINET, MX 12479 7286 1711 149 UNI2-AS, ES 7545 6041 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 5026 4193 77 ERX-CERNET-BKB China Education and Resear 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4780 3116 370 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4692 311 939 CABLEONE, US 9498 4609 541 339 BBIL-AP BHARTI Airtel Ltd., IN Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13358 13235 CHINAMOBILE-CN China Mobile Communications Grou 8151 12683 12098 UNINET, MX 12479 7286 7137 UNI2-AS, ES 7545 6041 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 5026 4949 ERX-CERNET-BKB China Education and Research Net 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4780 4410 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4609 4270 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 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 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 46887 CROWNCASTLE-AS46887, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, 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 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 3257 GTT-BACKBONE GTT, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 2516 KDDI KDDI CORPORATION, JP 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 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 /12:299 /13:580 /14:1199 /15:2094 /16:13705 /17:8301 /18:13582 /19:25037 /20:45608 /21:52644 /22:113347 /23:105649 /24:638895 /25:697 /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 6875 12683 UNINET, MX 12479 6217 7286 UNI2-AS, ES 11492 3537 4692 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3049 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2423 14182 AMAZON-02, US 30036 2318 2661 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1806 2:1539 3:967 4:10 5:4900 6:190 7:6 8:1521 9:6 11:172 12:1231 13:542 14:2647 15:417 16:298 17:387 18:913 20:587 21:4 22:188 23:8083 24:2559 25:2 27:2742 29:19 31:3389 32:32 33:1 34:81 35:289 36:4598 37:4558 38:9973 39:1196 40:432 41:4460 42:958 43:2836 44:414 45:19593 46:5091 47:396 49:2154 50:2054 51:597 52:1543 54:289 55:1111 56:11 57:305 58:2214 59:1398 60:1172 61:3062 62:3103 63:1746 64:5986 65:2121 66:5899 67:3235 68:1496 69:4206 70:1028 71:621 72:3063 74:2944 75:1517 76:600 77:2781 78:1925 79:1790 80:2318 81:2087 82:3859 83:1470 84:2029 85:3646 86:1109 87:2323 88:1346 89:4589 90:834 91:8422 92:2839 93:3012 94:4252 95:4561 96:1447 97:313 98:950 99:778 100:68 101:1339 102:4345 103:32237 104:5497 105:776 106:916 107:2814 108:1215 109:4224 110:2310 111:3985 112:2791 113:1660 114:2103 115:2235 116:2157 117:3132 118:2483 119:2091 120:2409 121:1560 122:2964 123:2287 124:1673 125:2938 126:125 128:1592 129:962 130:1535 131:2233 132:770 133:462 134:1635 135:537 136:1501 137:1292 138:2991 139:1588 140:1830 141:1553 142:2428 143:2121 144:1353 145:634 146:2192 147:2139 148:2790 149:2948 150:1310 151:2610 152:2277 153:795 154:9309 155:2273 156:4350 157:2220 158:1477 159:2706 160:3649 161:1996 162:3989 163:2328 164:1976 165:2624 166:1309 167:2156 168:3942 169:802 170:5447 171:1115 172:4523 173:3432 174:905 175:1335 176:3771 177:4736 178:4294 179:2289 180:2845 181:4346 182:3842 183:2402 184:2055 185:21635 186:5522 187:4789 188:4446 189:4500 190:9688 191:1551 192:11461 193:9519 194:7862 195:5626 196:3304 197:3185 198:6232 199:6096 200:8241 201:6401 202:10676 203:10483 204:4655 205:3747 206:4420 207:3947 208:4283 209:5462 210:4983 211:2774 212:4912 213:4027 214:1063 215:53 216:7085 217:3384 218:1649 219:577 220:2195 221:1286 222:917 223:3216 End of report

1 0

Q&A with Speakers of ‘Beyond the Chip’ Keynote on AI, HPC Infrastructure Needs + More!
by Nanog News 12 Dec '25

12 Dec '25

*** Q&A with Speakers of ‘Beyond the Chip’ Keynote on AI, HPC Infrastructure Needs* ------------------------------------------------------------ *NANOG Asks Speakers from AHEAD and NVIDIA About their Upcoming Talk* *AI is reshaping infrastructure faster than traditional data centers can keep up. *N96 (Feb. 2-4. 2026) will examine this shift head-on, with experts offering a practical look at what it now takes to support large-scale compute.The much anticipated Keynote entitled, “Beyond the Chip: The Unprecedented Infrastructure Demands of AI and HPC,” is sure to inspire questions and even better answers. Speakers include Chris Stewart, specialist solutions engineer at AHEAD; Chris Tucker, EVP of Foundry at AHEAD; and David Iles, senior director at NVIDIA. Get an in-depth preview + prepare your questions at our next conference, NANOG 96! READ MORE ( https://nanog.org/stories/articles/nanog-96-opens-with-beyond-the-chip-keyn… ) *** Sign Up for the N96 Peering Forum* ------------------------------------------------------------ *Grow Your Network, Knowledge, and Connections* N96 Peering Coordination Forum applications are open until Jan. 16 or until 20 applications are received! MORE INFO (https://nanog.org/events/nanog-96/peering/) *** Become a Mentor or Receive Mentorship at NANOG* ------------------------------------------------------------ *Improve Your Networth With the NANOG Network* *At NANOG, mentorship happens naturally: in hallway conversations, during lightning talks, over coffee breaks, and through our formal Mentorship Program.* Whether you’re new to networking or leveling up into leadership, you’ll find someone who’s walked a similar path and is eager to help you navigate yours. If you’re looking for guidance invested in your growth, or would like to share your expertise and insight, join the NANOG Mentorship Program. LEARN MORE (https://nanog.org/outreach/nanog-mentorship-program/) *** 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

1 0

Spoofer Report for NANOG for Nov 2025
by CAIDA Spoofer Project 08 Dec '25

08 Dec '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 Nov 2025: ASN Name Fixed-By 20119 ARROW 2025-11-01 19935 CRRS 2025-11-02 214639 2025-11-15 61461 Airtek Solutions C.A. 2025-11-21 Further information for the inferred remediation is available at: https://spoofer.caida.org/remedy.php Source Address Validation issues inferred during Nov 2025: ASN Name First-Spoofed Last-Spoofed 4901 CAAREN 2017-04-23 2025-11-30 33363 BHN-33363 2018-11-29 2025-11-22 22883 CONDENAST 2019-05-29 2025-11-18 21804 ACCESS-SK 2019-06-09 2025-11-27 55016 IMPER-AS-1 2021-05-18 2025-11-29 22773 ASN-CXA-ALL-CCI-22773-RDC 2021-10-24 2025-11-26 12183 TALKIE-COMMUNICATIONS 2022-12-10 2025-11-28 855 CANET-ASN-4 2023-04-26 2025-11-17 400282 2023-04-27 2025-11-28 393577 SCCNET 2023-05-03 2025-11-25 394684 AS-GOLD 2024-01-17 2025-11-29 27425 ASN-IDK-27425 2024-02-21 2025-11-16 53755 IOFLOOD 2024-02-23 2025-11-28 393530 TLU 2024-05-22 2025-11-30 54334 ROYA 2025-03-13 2025-11-27 273843 2025-04-02 2025-11-25 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

1 0

IPv4 Pricing
by Mike Hammett 07 Dec '25

07 Dec '25

What are you using for guides for IPv4 pricing? There are a bunch of undated blogs, which don't mean much if there's no date. Hilco's blog says somewhere around $27 for a /22 to /24: https://www.ipv4.global/reports/october-2025/ but then fast forward a month on their auction page and it's down to $22: https://auctions.ipv4.global/prior-sales These guys stopped updating in June: https://ipv4market.eu/ipv4-market-average-sale-prices-2025/ ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com

29 86

NANOG 96 Room Block Open + More
by Nanog News 05 Dec '25

05 Dec '25

*** NANOG 96 Room Block Open* ------------------------------------------------------------ *Don’t Get Stuck Peak High San Francisco Prices* Friendly Reminder: Our NANOG 96 room block is filling fast, and once it’s gone… it’s gone. Secure your discounted hotel rate now and lock in your stay for N96. *READ MORE* (https://nanog.org/events/nanog-96/venue/) *** Your Expertise Belongs at NANOG 96* ------------------------------------------------------------ Have a Talk that Pushes Networking Forward? Call for Content! We want it — automation, AI + infra, Kubernetes, optical, security, future-net architecture, research, tutorials, you name it. Bring your expertise to the NANOG stage and help shape the next era of Internet infrastructure. *VIEW NOW* (https://nanog.org/program/call-presentations/) *** Why Network Operators Should Attend NANOG* ------------------------------------------------------------ *Where the Internet’s Future Is Built by Its Community* The most critical conversations about the Internet happen at NANOG conferences. For intermediate, senior, and executive-level technologists, this community isn’t just another tech conference, it’s a place to meet + rub shoulders with the world’s most inspiring minds in Internet infrastructure. *READ NOW* ( https://nanog.org/stories/why-network-operators-should-attend-nanog/) *** 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

1 0

Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 05 Dec '25

05 Dec '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 06 Dec, 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: 1019924 Prefixes after maximum aggregation (per Origin AS): 394232 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504455 Number of IPv4 prefixes with a valid ROA: 593473 Number of IPv4 prefixes with an invalid ROA: 1542 Number of IPv4 prefixes with no ROA: 424909 Total ASes present in the Internet Routing Table: 77610 Prefixes per ASN: 13.14 Origin-only ASes present in the Internet Routing Table: 66677 Origin ASes announcing only one prefix: 27126 Transit ASes present in the Internet Routing Table: 10933 Transit-only ASes present in the Internet Routing Table: 541 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 69 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 965 Number of instances of unregistered ASNs: 1004 Number of 32-bit ASNs allocated by the RIRs: 48158 Number of 32-bit ASNs visible in the Routing Table: 39423 Prefixes from 32-bit ASNs in the Routing Table: 217674 Number of bogon 32-bit ASNs visible in the Routing Table: 113 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 439 Number of addresses announced to Internet: 3101066752 Equivalent to 184 /8s, 214 /16s and 134 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 333911 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275935 Total APNIC prefixes after maximum aggregation: 81300 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 263483 Unique aggregates announced from the APNIC address blocks: 106295 APNIC Region origin ASes present in the Internet Routing Table: 14928 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4555 APNIC Region transit ASes present in the Internet Routing Table: 1983 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10475 Number of APNIC addresses announced to Internet: 753543424 Equivalent to 44 /8s, 234 /16s and 41 /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: 299157 Total ARIN prefixes after maximum aggregation: 134685 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298844 Unique aggregates announced from the ARIN address blocks: 145729 ARIN Region origin ASes present in the Internet Routing Table: 19388 ARIN Prefixes per ASN: 15.41 ARIN Region origin ASes announcing only one prefix: 7097 ARIN Region transit ASes present in the Internet Routing Table: 1940 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: 5426 Number of ARIN addresses announced to Internet: 1337569152 Equivalent to 79 /8s, 185 /16s and 175 /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: 282405 Total RIPE prefixes after maximum aggregation: 139883 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283381 Unique aggregates announced from the RIPE address blocks: 183886 RIPE Region origin ASes present in the Internet Routing Table: 29112 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12062 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: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12853 Number of RIPE addresses announced to Internet: 735802752 Equivalent to 43 /8s, 219 /16s and 117 /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: 125940 Total LACNIC prefixes after maximum aggregation: 30804 LACNIC Deaggregation factor: 4.09 Prefixes being announced from the LACNIC address blocks: 121908 Unique aggregates announced from the LACNIC address blocks: 49699 LACNIC Region origin ASes present in the Internet Routing Table: 11324 LACNIC Prefixes per ASN: 10.77 LACNIC Region origin ASes announcing only one prefix: 2678 LACNIC Region transit ASes present in the Internet Routing Table: 2522 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9311 Number of LACNIC addresses announced to Internet: 170683904 Equivalent to 10 /8s, 44 /16s and 110 /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: 35522 Total AfriNIC prefixes after maximum aggregation: 6902 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 51869 Unique aggregates announced from the AfriNIC address blocks: 18465 AfriNIC Region origin ASes present in the Internet Routing Table: 1997 AfriNIC Prefixes per ASN: 25.97 AfriNIC Region origin ASes announcing only one prefix: 734 AfriNIC Region transit ASes present in the Internet Routing Table: 382 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1358 Number of AfriNIC addresses announced to Internet: 103303424 Equivalent to 6 /8s, 40 /16s and 73 /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 13362 8760 123 CHINAMOBILE-CN China Mobile Communication 7545 6048 835 593 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 5010 4193 77 ERX-CERNET-BKB China Education and Resear 9498 4602 541 336 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3339 827 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3327 1869 100 VNPT-AS-VN VNPT Corp, VN 24560 2951 864 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2519 276 1939 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14280 37210 5402 AMAZON-02, US 22773 4780 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3312 4861 486 GOOGLE-CLOUD-PLATFORM, US 749 3208 54760 2459 DNIC-AS-00749, US 16625 2874 1231 2152 AKAMAI-AS, US 36352 2824 231 908 AS-COLOCROSSING, US 174 2703 8768 846 COGENT-174, 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 7282 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4002 376 2294 M247, RO 20940 3862 3395 125 AKAMAI-ASN1, NL 12389 3175 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2533 180 1833 CDNEXT, GB 34984 2423 363 576 TELLCOM-AS, TR 8452 1662 1852 14 TE-AS TE-AS, EG 203020 1612 241 784 HOSTROYALE, IN 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 12651 3291 583 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2508 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2431 267 Claro NXT Telecomunicacoes Ltda, BR 3816 1344 777 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 2486 56 TIM SA, BR 18881 901 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 1951 506 27 RAYA-AS, EG 36992 1681 1509 399 ETISALAT-MISR, EG 24863 1261 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1093 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1038 519 32 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 556 82 3 KENET-AS, KE 15399 539 56 51 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 14280 37210 5402 AMAZON-02, US 9808 13362 8760 123 CHINAMOBILE-CN China Mobile Communication 8151 12651 3291 583 UNINET, MX 12479 7282 1711 149 UNI2-AS, ES 7545 6048 835 593 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 5010 4193 77 ERX-CERNET-BKB China Education and Resear 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4780 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4602 541 336 BBIL-AP BHARTI Airtel Ltd., IN Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13362 13239 CHINAMOBILE-CN China Mobile Communications Grou 8151 12651 12068 UNINET, MX 12479 7282 7133 UNI2-AS, ES 7545 6048 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 5010 4933 ERX-CERNET-BKB China Education and Research Net 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4780 4411 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4602 4266 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 3984 VIETEL-AS-AP Viettel Group, VN 11492 4715 3802 CABLEONE, 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 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, 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 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 3257 GTT-BACKBONE GTT, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 2516 KDDI KDDI CORPORATION, JP 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 /11:94 /12:298 /13:580 /14:1198 /15:2093 /16:13706 /17:8301 /18:13570 /19:25043 /20:45464 /21:52607 /22:113405 /23:105483 /24:637314 /25:697 /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 6852 12651 UNINET, MX 12479 6212 7282 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3053 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2434 14280 AMAZON-02, US 30036 2318 2661 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1805 2:1541 3:976 4:10 5:4884 6:190 7:6 8:1519 9:6 11:172 12:1230 13:571 14:2640 15:414 16:303 17:388 18:913 20:587 21:4 22:188 23:8092 24:2561 25:2 27:2733 29:19 31:3391 32:32 33:1 34:81 35:288 36:4599 37:4560 38:9377 39:1195 40:446 41:4437 42:949 43:2820 44:398 45:19496 46:5094 47:388 49:2162 50:2051 51:598 52:1567 54:289 55:1102 56:11 57:305 58:2213 59:1388 60:1167 61:3068 62:3098 63:1736 64:5958 65:2128 66:5913 67:3236 68:1499 69:4198 70:1032 71:621 72:3053 74:2934 75:1515 76:603 77:2775 78:1915 79:1784 80:2318 81:2103 82:3828 83:1460 84:2035 85:3649 86:1104 87:2322 88:1350 89:4582 90:838 91:8440 92:2849 93:3013 94:4237 95:4566 96:1448 97:314 98:951 99:773 100:68 101:1340 102:4330 103:32216 104:5525 105:772 106:913 107:2807 108:1212 109:4246 110:2312 111:3979 112:2796 113:1657 114:2101 115:2237 116:2157 117:3136 118:2498 119:2111 120:2409 121:1562 122:2957 123:2288 124:1674 125:2939 126:125 128:1593 129:968 130:1511 131:2261 132:771 133:462 134:1634 135:497 136:1503 137:1209 138:2909 139:1587 140:1779 141:1550 142:2348 143:2143 144:1354 145:627 146:2165 147:2139 148:2790 149:2884 150:1305 151:2617 152:2297 153:767 154:9199 155:2258 156:4251 157:2217 158:1474 159:2693 160:3654 161:1990 162:4007 163:2321 164:1962 165:2615 166:1313 167:2152 168:3888 169:799 170:5455 171:1114 172:4509 173:3428 174:914 175:1342 176:3781 177:4755 178:4299 179:2292 180:2853 181:4349 182:3837 183:2401 184:2060 185:21656 186:5517 187:4784 188:4436 189:4503 190:9707 191:1566 192:11449 193:9508 194:7859 195:5631 196:3298 197:3200 198:6225 199:6093 200:8219 201:6395 202:10674 203:10514 204:4643 205:3730 206:4402 207:3926 208:4267 209:5456 210:4977 211:2772 212:4904 213:4013 214:1027 215:53 216:7064 217:3391 218:1646 219:578 220:2195 221:1286 222:913 223:3213 End of report

1 0

Request for Participation in International Survey on Network Engineering Workforce Development
by MAEMURA Akinori 05 Dec '25

05 Dec '25

Dear colleagues at NANOG, I hope this message finds you well. I'd like to ask you for some help by participating our questionnaire survey: The Japan Network Information Center (JPNIC) and the Ministry of Internal Affairs and Communications (MIC) of Japan are conducting a joint research initiative on the development and retention of network engineering talent. As part of this effort, we are gathering insights from global stakeholders. [Reference] Launch of a Research Study on Securing and Developing Network Engineering Talent, and Request for Cooperation https://www.nic.ad.jp/en/topics/2025/20251205-04.html Japan faces several challenges including regional disparities, shortages of skilled personnel among smaller operators, and gaps in structured training and career development pathways. To inform effective policy development, we seek to learn from your country’s experiences, practices, and ideas. We would be sincerely grateful if you could participate in our international survey on the current status, challenges, and policy approaches related to network engineer development. We plan to share preliminary findings at future forums, and your input will play a meaningful role in shaping this work. The survey can be accessed at the following link: https://www.surveymonkey.com/r/japan-hrd2025 ・Estimated time required: 10-15 minutes ・Survey deadline: December 18 ・Responses will be kept confidential, anonymized during analysis, and used solely for research purposes. ・Any personal information (if provided) will be used only for follow-up communication related to this study. Your expertise and perspectives would be extremely valuable to us. If appropriate, please feel free to forward this invitation to others who may offer relevant insights. Should you have any questions, please do not hesitate to contact us. Thank you very much for your time and cooperation. Best regards, MAEMURA Akinori maem(a)nic.ad.jp Japan Network Information Center (JPNIC) -- MAEMURA Akinori / 前村昌紀 maem(a)nic.ad.jp JPNIC - Japan Network Information Center

1 0

Arista 7280QR-C36 Viability
by Mike Hammett 04 Dec '25

04 Dec '25

At the risk of the Streisand effect, what am I missing about the Arista 7280QR-C36? It looks like a great router for small ISPs (great price, large packet buffers, good port selection, meaningful hardware routes). That said, it looks to be right on the border of DFZ viability. It supports "over 1M" routes, but I currently have about 1,036,824 in my route table. How much over is "over"? What happens in EOS when it goes over? What's the "next best" box for that role? ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com

11 15

Cox AS22773 uPRF issue - please contact off list
by Evan S. Weiner 04 Dec '25

04 Dec '25

If there's anyone on here with Cox engineering that can assist with a uPRF strict issue (we're multihomed), please contact me offlist. Thanks, Evan [cid:ca13917c-8f83-46c4-80da-06b0c0d7e178] Evan S. Weiner Managing Member , Hosted Backbone, LLC d: (804) 549-4899<tel:(804)%20549-4899> | m: (804) 677-9544<tel:(804)%20677-9544> e: eweiner(a)hostedbackbone.net<mailto:eweiner@hostedbackbone.net> | w: www.hostedbackbone.net<https://www.hostedbackbone.net/>

5 5

Whatever happened to ONOS?
by Mark Prosser 04 Dec '25

04 Dec '25

I remember quite a long time ago being convinced that ONOS & other SDN projects would change the industry. All the podcasts were suggesting they would as well... Today, in the context of what was promised, they seemingly Still Do Nothing One project I thought was especially interesting was ONOS.... it seemed to really suggest it would transform Telcos in the Whitebox craze timeline. As Openflow and such fell off, I remember ONOS pivoting to SR-TE & PCE... but I haven't heard about it in quite a while. Is anyone using this in production? The websites seem to still exist. https://wiki.onosproject.org/ https://opennetworking.org/onos/ Just curious. Warm regards, -- Mark Prosser // E: mark(a)zealnetworks.ca // W: https://zealnetworks.ca

4 5