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Weekly Global IPv4 Routing Table Report
From: Routing Table Analysis Role Account via NANOG <nanog () lists nanog org>
Date: Sat, 20 Sep 2025 04:02:29 +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 20 Sep, 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: 1003102 Prefixes after maximum aggregation (per Origin AS): 389561 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 495123 Number of IPv4 prefixes with a valid ROA: 566689 Number of IPv4 prefixes with an invalid ROA: 1551 Number of IPv4 prefixes with no ROA: 434862 Total ASes present in the Internet Routing Table: 77338 Prefixes per ASN: 12.97 Origin-only ASes present in the Internet Routing Table: 66482 Origin ASes announcing only one prefix: 27068 Transit ASes present in the Internet Routing Table: 10856 Transit-only ASes present in the Internet Routing Table: 529 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: 1043 Number of instances of unregistered ASNs: 1081 Number of 32-bit ASNs allocated by the RIRs: 47507 Number of 32-bit ASNs visible in the Routing Table: 38982 Prefixes from 32-bit ASNs in the Routing Table: 210296 Number of bogon 32-bit ASNs visible in the Routing Table: 106 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 432 Number of addresses announced to Internet: 3112254976 Equivalent to 185 /8s, 129 /16s and 62 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 327149 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 268451 Total APNIC prefixes after maximum aggregation: 79677 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 258703 Unique aggregates announced from the APNIC address blocks: 105682 APNIC Region origin ASes present in the Internet Routing Table: 14821 APNIC Prefixes per ASN: 17.46 APNIC Region origin ASes announcing only one prefix: 4518 APNIC Region transit ASes present in the Internet Routing Table: 1954 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: 10360 Number of APNIC addresses announced to Internet: 751223424 Equivalent to 44 /8s, 198 /16s and 194 /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: 294561 Total ARIN prefixes after maximum aggregation: 134030 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295799 Unique aggregates announced from the ARIN address blocks: 142716 ARIN Region origin ASes present in the Internet Routing Table: 19312 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7071 ARIN Region transit ASes present in the Internet Routing Table: 1920 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: 5333 Number of ARIN addresses announced to Internet: 1353236480 Equivalent to 80 /8s, 168 /16s and 192 /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: 279262 Total RIPE prefixes after maximum aggregation: 138081 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278518 Unique aggregates announced from the RIPE address blocks: 180210 RIPE Region origin ASes present in the Internet Routing Table: 29067 RIPE Prefixes per ASN: 9.58 RIPE Region origin ASes announcing only one prefix: 12098 RIPE Region transit ASes present in the Internet Routing Table: 3933 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: 12705 Number of RIPE addresses announced to Internet: 732628864 Equivalent to 43 /8s, 171 /16s and 7 /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: 124910 Total LACNIC prefixes after maximum aggregation: 30240 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121170 Unique aggregates announced from the LACNIC address blocks: 49439 LACNIC Region origin ASes present in the Internet Routing Table: 11293 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2664 LACNIC Region transit ASes present in the Internet Routing Table: 2487 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: 9252 Number of LACNIC addresses announced to Internet: 170621952 Equivalent to 10 /8s, 43 /16s and 124 /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: 34875 Total AfriNIC prefixes after maximum aggregation: 6838 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 48480 Unique aggregates announced from the AfriNIC address blocks: 16694 AfriNIC Region origin ASes present in the Internet Routing Table: 1967 AfriNIC Prefixes per ASN: 24.65 AfriNIC Region origin ASes announcing only one prefix: 717 AfriNIC Region transit ASes present in the Internet Routing Table: 385 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1332 Number of AfriNIC addresses announced to Internet: 104310528 Equivalent to 6 /8s, 55 /16s and 167 /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 13569 8759 116 CHINAMOBILE-CN China Mobile Communication 7545 6162 837 602 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4955 4193 77 ERX-CERNET-BKB China Education and Resear 9498 4469 536 313 BBIL-AP BHARTI Airtel Ltd., IN 7552 3941 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3309 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3076 827 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 863 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4766 2334 11522 632 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 14411 40906 5395 AMAZON-02, US 11492 4737 320 807 CABLEONE, US 22773 3950 3062 313 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3678 1320 82 SHAW, CA 174 3378 8774 825 COGENT-174, US 396982 3265 4824 459 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3030 235 1732 USDA-1, US 16625 2926 1238 2173 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 7459 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3945 370 2218 M247, RO 20940 3911 3395 127 AKAMAI-ASN1, NL 12389 3131 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2421 172 1754 CDNEXT, GB 34984 2415 363 574 TELLCOM-AS, TR 203020 1961 230 915 HOSTROYALE, IN 8452 1623 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 12277 3249 591 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2541 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 1353 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1231 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1184 371 22 Telefonica del Peru S.A.A., PE 22884 1063 68 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2487 55 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 1821 652 28 RAYA-AS, EG 36992 1507 1498 383 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1248 389 20 LINKdotNET-AS, EG 29571 1185 102 51 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1029 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 563 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 14411 40906 5395 AMAZON-02, US 9808 13569 8759 116 CHINAMOBILE-CN China Mobile Communication 8151 12277 3249 591 UNINET, MX 12479 7459 1711 149 UNI2-AS, ES 7545 6162 837 602 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4955 4193 77 ERX-CERNET-BKB China Education and Resear 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4737 320 807 CABLEONE, US 9498 4469 536 313 BBIL-AP BHARTI Airtel Ltd., IN 22773 3950 3062 313 ASN-CXA-ALL-CCI-22773-RDC, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13569 13453 CHINAMOBILE-CN China Mobile Communications Grou 8151 12277 11686 UNINET, MX 12479 7459 7310 UNI2-AS, ES 7545 6162 5560 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4955 4878 ERX-CERNET-BKB China Education and Research Net 39891 4798 4735 ALJAWWALSTC-AS, SA 9498 4469 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4737 3930 CABLEONE, US 7552 3941 3914 VIETEL-AS-AP Viettel Group, VN 20940 3911 3784 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 /12:298 /13:579 /14:1201 /15:2129 /16:13780 /17:8284 /18:13529 /19:24832 /20:45127 /21:52477 /22:112812 /23:103679 /24:623423 /25:788 /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 6506 12277 UNINET, MX 12479 6427 7459 UNI2-AS, ES 11492 3552 4737 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3678 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2507 3950 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2449 14411 AMAZON-02, US 30036 2294 2635 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3493 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1780 2:1524 3:938 4:10 5:4769 6:165 7:6 8:1562 9:6 11:172 12:1247 13:568 14:2651 15:399 16:303 17:386 18:901 20:572 21:4 22:188 23:7869 24:2658 25:2 27:2736 29:19 31:3365 32:33 33:1 34:81 35:269 36:4364 37:4545 38:9410 39:1078 40:283 41:4347 42:945 43:2698 44:377 45:18898 46:5131 47:347 49:2008 50:2041 51:594 52:1609 54:373 55:1099 56:11 57:289 58:2164 59:1358 60:1189 61:2885 62:3041 63:1774 64:5631 65:2120 66:4898 67:3096 68:1085 69:3919 70:1041 71:633 72:2896 74:2833 75:1500 76:606 77:2780 78:1906 79:1759 80:2249 81:2090 82:3327 83:1454 84:1971 85:3496 86:1100 87:2381 88:1325 89:4497 90:809 91:8408 92:2792 93:2975 94:4169 95:4450 96:1466 97:312 98:952 99:761 100:71 101:1220 102:4102 103:32248 104:5311 105:775 106:878 107:2657 108:1230 109:4212 110:2245 111:3767 112:2617 113:1584 114:1997 115:2246 116:2078 117:2863 118:2537 119:1962 120:2265 121:1407 122:2809 123:2250 124:1732 125:2911 126:91 128:1579 129:967 130:1292 131:2123 132:788 133:461 134:1598 135:362 136:1486 137:1196 138:2807 139:1601 140:1697 141:1541 142:1915 143:2076 144:1261 145:623 146:2183 147:2112 148:2735 149:2909 150:1271 151:2530 152:2125 153:575 154:7480 155:2045 156:3477 157:1981 158:1426 159:2570 160:3540 161:1965 162:3929 163:2297 164:1909 165:2571 166:1567 167:2084 168:3820 169:780 170:5358 171:1007 172:4237 173:3408 174:904 175:1334 176:3804 177:4755 178:4177 179:2279 180:2603 181:4253 182:3726 183:2254 184:2071 185:21655 186:5417 187:4695 188:4275 189:4345 190:9706 191:1559 192:11416 193:9480 194:7803 195:5580 196:3298 197:3241 198:6255 199:8708 200:8257 201:6345 202:10616 203:10587 204:4579 205:3657 206:4552 207:3663 208:4285 209:5304 210:4968 211:2766 212:4703 213:3860 214:1037 215:52 216:6858 217:3323 218:1556 219:567 220:2149 221:1233 222:883 223:2972 End of report _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog () lists nanog org/message/OVZ77DHAHISIPCL7A3GVZM2ZTEXYPFKL/
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