nanog mailing list archives
Weekly Global IPv4 Routing Table Report
From: Routing Table Analysis Role Account via NANOG <nanog () lists nanog org>
Date: Sat, 4 Oct 2025 04:03:26 +1000 (AEST)
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 () lists apnic net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz () gmail com>. IPv4 Routing Table Report 04:00 +10GMT Sat 04 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: 1006258 Prefixes after maximum aggregation (per Origin AS): 390276 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 496067 Number of IPv4 prefixes with a valid ROA: 569803 Number of IPv4 prefixes with an invalid ROA: 1530 Number of IPv4 prefixes with no ROA: 434925 Total ASes present in the Internet Routing Table: 77355 Prefixes per ASN: 13.01 Origin-only ASes present in the Internet Routing Table: 66482 Origin ASes announcing only one prefix: 27072 Transit ASes present in the Internet Routing Table: 10873 Transit-only ASes present in the Internet Routing Table: 531 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: 986 Number of instances of unregistered ASNs: 1024 Number of 32-bit ASNs allocated by the RIRs: 47638 Number of 32-bit ASNs visible in the Routing Table: 39049 Prefixes from 32-bit ASNs in the Routing Table: 211202 Number of bogon 32-bit ASNs visible in the Routing Table: 102 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 429 Number of addresses announced to Internet: 3111233536 Equivalent to 185 /8s, 113 /16s and 168 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 328534 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269534 Total APNIC prefixes after maximum aggregation: 80113 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 259476 Unique aggregates announced from the APNIC address blocks: 105891 APNIC Region origin ASes present in the Internet Routing Table: 14834 APNIC Prefixes per ASN: 17.49 APNIC Region origin ASes announcing only one prefix: 4525 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: 10375 Number of APNIC addresses announced to Internet: 751802240 Equivalent to 44 /8s, 207 /16s and 151 /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: 295496 Total ARIN prefixes after maximum aggregation: 133933 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 296870 Unique aggregates announced from the ARIN address blocks: 142935 ARIN Region origin ASes present in the Internet Routing Table: 19319 ARIN Prefixes per ASN: 15.37 ARIN Region origin ASes announcing only one prefix: 7081 ARIN Region transit ASes present in the Internet Routing Table: 1927 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: 5342 Number of ARIN addresses announced to Internet: 1351417856 Equivalent to 80 /8s, 141 /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: 280070 Total RIPE prefixes after maximum aggregation: 138400 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279608 Unique aggregates announced from the RIPE address blocks: 180744 RIPE Region origin ASes present in the Internet Routing Table: 29062 RIPE Prefixes per ASN: 9.62 RIPE Region origin ASes announcing only one prefix: 12087 RIPE Region transit ASes present in the Internet Routing Table: 3940 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: 12735 Number of RIPE addresses announced to Internet: 732985728 Equivalent to 43 /8s, 176 /16s and 121 /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: 125321 Total LACNIC prefixes after maximum aggregation: 30295 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 121559 Unique aggregates announced from the LACNIC address blocks: 49491 LACNIC Region origin ASes present in the Internet Routing Table: 11300 LACNIC Prefixes per ASN: 10.76 LACNIC Region origin ASes announcing only one prefix: 2660 LACNIC Region transit ASes present in the Internet Routing Table: 2500 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: 9261 Number of LACNIC addresses announced to Internet: 170834944 Equivalent to 10 /8s, 46 /16s and 188 /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: 34851 Total AfriNIC prefixes after maximum aggregation: 6859 AfriNIC Deaggregation factor: 5.08 Prefixes being announced from the AfriNIC address blocks: 48316 Unique aggregates announced from the AfriNIC address blocks: 16625 AfriNIC Region origin ASes present in the Internet Routing Table: 1971 AfriNIC Prefixes per ASN: 24.51 AfriNIC Region origin ASes announcing only one prefix: 719 AfriNIC Region transit ASes present in the Internet Routing Table: 383 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: 1336 Number of AfriNIC addresses announced to Internet: 103958272 Equivalent to 6 /8s, 50 /16s and 71 /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 13736 8759 115 CHINAMOBILE-CN China Mobile Communication 7545 6184 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4952 4193 77 ERX-CERNET-BKB China Education and Resear 9498 4471 536 313 BBIL-AP BHARTI Airtel Ltd., IN 7552 3958 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3727 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3311 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3118 827 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2928 863 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2360 504 1506 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 14257 40893 5367 AMAZON-02, US 11492 4752 320 794 CABLEONE, US 22773 3979 3066 335 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3679 1320 82 SHAW, CA 174 3288 8770 813 COGENT-174, US 396982 3269 4823 463 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3083 239 1717 USDA-1, US 16625 2910 1240 2175 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 7427 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3987 374 2243 M247, RO 20940 3920 3395 126 AKAMAI-ASN1, NL 12389 3144 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2462 176 1786 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1888 203 908 HOSTROYALE, IN 8452 1626 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 12388 3280 577 UNINET, MX 10620 3504 474 1047 Telmex Colombia S.A., CO 13999 2543 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 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, 11664 1226 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1067 68 351 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 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 1770 616 28 RAYA-AS, EG 36992 1508 1498 383 ETISALAT-MISR, EG 24863 1251 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1188 102 53 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 950 520 42 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 547 56 56 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 14257 40893 5367 AMAZON-02, US 9808 13736 8759 115 CHINAMOBILE-CN China Mobile Communication 8151 12388 3280 577 UNINET, MX 12479 7427 1711 149 UNI2-AS, ES 7545 6184 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4952 4193 77 ERX-CERNET-BKB China Education and Resear 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4752 320 794 CABLEONE, US 9498 4471 536 313 BBIL-AP BHARTI Airtel Ltd., IN 9009 3987 374 2243 M247, RO Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13736 13621 CHINAMOBILE-CN China Mobile Communications Grou 8151 12388 11811 UNINET, MX 12479 7427 7278 UNI2-AS, ES 7545 6184 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4952 4875 ERX-CERNET-BKB China Education and Research Net 39891 4833 4767 ALJAWWALSTC-AS, SA 9498 4471 4158 BBIL-AP BHARTI Airtel Ltd., IN 11492 4752 3958 CABLEONE, US 7552 3958 3930 VIETEL-AS-AP Viettel Group, VN 20940 3920 3794 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, 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 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 23.140.216.0/24 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /12:301 /13:580 /14:1199 /15:2122 /16:13802 /17:8272 /18:13535 /19:24879 /20:45163 /21:52371 /22:112909 /23:104140 /24:626034 /25:787 /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 6602 12388 UNINET, MX 12479 6393 7427 UNI2-AS, ES 11492 3565 4752 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3467 3679 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2524 3979 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2403 14257 AMAZON-02, US 30036 2289 2629 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2222 3504 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1785 2:1526 3:940 4:10 5:4780 6:169 7:6 8:1550 9:6 11:172 12:1244 13:564 14:2676 15:401 16:304 17:389 18:900 20:574 21:4 22:188 23:7870 24:2650 25:2 27:2725 29:19 31:3354 32:32 33:1 34:81 35:275 36:4446 37:4550 38:9491 39:1091 40:295 41:4362 42:946 43:2710 44:385 45:18925 46:5197 47:345 49:2018 50:2049 51:595 52:1593 54:359 55:1105 56:11 57:286 58:2178 59:1369 60:1189 61:2924 62:3086 63:1769 64:5663 65:2140 66:4953 67:3104 68:1097 69:3939 70:1045 71:635 72:2979 74:2835 75:1495 76:601 77:2775 78:1905 79:1751 80:2264 81:2119 82:3436 83:1476 84:1988 85:3523 86:1103 87:2375 88:1328 89:4496 90:808 91:8387 92:2790 93:2982 94:4181 95:4461 96:1475 97:310 98:952 99:741 100:71 101:1221 102:4144 103:32245 104:5363 105:767 106:897 107:2662 108:1215 109:4227 110:2250 111:3834 112:2656 113:1584 114:1995 115:2266 116:2079 117:2940 118:2536 119:1965 120:2291 121:1406 122:2836 123:2260 124:1730 125:2916 126:93 128:1582 129:967 130:1282 131:2133 132:789 133:461 134:1607 135:365 136:1490 137:1170 138:2807 139:1596 140:1697 141:1547 142:2039 143:2066 144:1271 145:627 146:2187 147:2120 148:2736 149:2909 150:1273 151:2553 152:2176 153:574 154:7431 155:2056 156:3449 157:1990 158:1424 159:2600 160:3556 161:1990 162:3947 163:2293 164:2134 165:2569 166:1567 167:2102 168:3834 169:781 170:5356 171:1021 172:4245 173:3408 174:911 175:1339 176:3807 177:4776 178:4275 179:2307 180:2622 181:4261 182:3724 183:2298 184:2065 185:21649 186:5367 187:4739 188:4314 189:4424 190:9709 191:1553 192:11410 193:9486 194:7799 195:5585 196:3263 197:3250 198:6251 199:8753 200:8255 201:6357 202:10649 203:10524 204:4611 205:3680 206:4556 207:3706 208:4296 209:5362 210:4973 211:2769 212:4818 213:3892 214:1040 215:52 216:6889 217:3343 218:1617 219:568 220:2189 221:1235 222:883 223:3024 End of report _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog () lists nanog org/message/CGA57KZCOMJ2QIUIJ5UV6QLX5JPQGZT7/
Current thread:
- Weekly Global IPv4 Routing Table Report Routing Table Analysis Role Account via NANOG (Oct 03)
- <Possible follow-ups>
- Weekly Global IPv4 Routing Table Report Routing Table Analysis Role Account via NANOG (Oct 10)
- Weekly Global IPv4 Routing Table Report Routing Table Analysis Role Account via NANOG (Oct 17)
- Weekly Global IPv4 Routing Table Report Routing Table Analysis Role Account via NANOG (Oct 24)