This is an automated weekly mailing describing the state of the IPv4 Research & Education Routing Table received by NSRC's collector from RENU's network. Daily listings are sent to ren-bgp-stats-all@lists.nsrc.org. For historical data, please see https://bgp.nsrc.org. If you have any comments please contact Philip Smith . IPv4 R&E Routing Table Report 18:40 GMT Sat 29 Nov, 2025 IPv4 BGP Table (Global) as seen at RENU. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/RENU/ Analysis Summary ---------------- BGP routing table entries examined: 1027029 Prefixes after maximum aggregation (per Origin AS): 394150 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 503124 Number of IPv4 prefixes with a valid ROA: 598472 Number of IPv4 prefixes with an invalid ROA: 2194 Number of IPv4 prefixes with no ROA: 426363 Total ASes present in the Internet Routing Table: 77655 Prefixes per ASN: 13.23 Origin-only ASes present in the Internet Routing Table: 66540 Origin ASes announcing only one prefix: 27046 Transit ASes present in the Internet Routing Table: 11115 Transit-only ASes present in the Internet Routing Table: 570 Paths with bogon ASNs present in the IPv4 Routing Table: 205 Average AS path length visible in the Internet Routing Table: 5.0 Max AS path length visible: 69 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1045 Number of instances of unregistered ASNs: 1108 Number of 32-bit ASNs allocated by the RIRs: 48096 Number of 32-bit ASNs visible in the Routing Table: 39419 Prefixes from 32-bit ASNs in the Routing Table: 219641 Number of bogon 32-bit ASNs visible in the Routing Table: 165 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 470 Number of addresses announced to Internet: 3101300992 Equivalent to 184 /8s, 218 /16s and 25 /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: 336674 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276872 Total APNIC prefixes after maximum aggregation: 81103 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 264427 Unique aggregates announced from the APNIC address blocks: 106011 APNIC Region origin ASes present in the Internet Routing Table: 14880 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4502 APNIC Region transit ASes present in the Internet Routing Table: 2000 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10449 Number of APNIC addresses announced to Internet: 753399040 Equivalent to 44 /8s, 231 /16s and 245 /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: 301439 Total ARIN prefixes after maximum aggregation: 134566 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 301148 Unique aggregates announced from the ARIN address blocks: 145555 ARIN Region origin ASes present in the Internet Routing Table: 19374 ARIN Prefixes per ASN: 15.54 ARIN Region origin ASes announcing only one prefix: 7108 ARIN Region transit ASes present in the Internet Routing Table: 1974 Average ARIN Region AS path length visible: 4.7 Max ARIN Region AS path length visible: 36 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5421 Number of ARIN addresses announced to Internet: 1337549568 Equivalent to 79 /8s, 185 /16s and 99 /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: 283971 Total RIPE prefixes after maximum aggregation: 140171 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 284751 Unique aggregates announced from the RIPE address blocks: 183731 RIPE Region origin ASes present in the Internet Routing Table: 29165 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12077 RIPE Region transit ASes present in the Internet Routing Table: 4007 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 28 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12878 Number of RIPE addresses announced to Internet: 735924480 Equivalent to 43 /8s, 221 /16s and 81 /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: 125798 Total LACNIC prefixes after maximum aggregation: 30515 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121751 Unique aggregates announced from the LACNIC address blocks: 49635 LACNIC Region origin ASes present in the Internet Routing Table: 11318 LACNIC Prefixes per ASN: 10.76 LACNIC Region origin ASes announcing only one prefix: 2665 LACNIC Region transit ASes present in the Internet Routing Table: 2569 Average LACNIC Region AS path length visible: 5.6 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: 170772992 Equivalent to 10 /8s, 45 /16s and 202 /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: 37904 Total AfriNIC prefixes after maximum aggregation: 7097 AfriNIC Deaggregation factor: 5.34 Prefixes being announced from the AfriNIC address blocks: 54482 Unique aggregates announced from the AfriNIC address blocks: 17804 AfriNIC Region origin ASes present in the Internet Routing Table: 1998 AfriNIC Prefixes per ASN: 27.27 AfriNIC Region origin ASes announcing only one prefix: 694 AfriNIC Region transit ASes present in the Internet Routing Table: 384 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 56 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1360 Number of AfriNIC addresses announced to Internet: 103419392 Equivalent to 6 /8s, 42 /16s and 14 /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 13507 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6067 832 593 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4587 541 337 BBIL-AP BHARTI Airtel Ltd., IN 18403 4449 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4010 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3741 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3330 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3322 1869 100 VNPT-AS-VN VNPT Corp, VN 24560 2949 865 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2497 274 1925 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14238 37207 5389 AMAZON-02, US 22773 4769 3115 371 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 174 4446 8766 840 COGENT-174, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3304 4861 482 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 3003 1288 2186 AKAMAI-AS, US 36352 2829 231 910 AS-COLOCROSSING, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7297 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4064 382 2301 M247, RO 20940 3989 3395 127 AKAMAI-ASN1, NL 12389 3164 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2530 180 1830 CDNEXT, GB 34984 2420 363 577 TELLCOM-AS, TR 8452 1705 1852 14 TE-AS TE-AS, EG 203020 1609 241 781 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12670 3301 571 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2511 509 348 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1348 783 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1315 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1057 70 364 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1986 630 32 RAYA-AS, EG 36992 1681 1508 399 ETISALAT-MISR, EG 20011 1327 205 344 NTT-DATA-Inc, ZA 24863 1265 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1088 520 33 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36914 565 82 3 KENET-AS, KE 3741 561 725 325 NTT-DATA-Inc, ZA Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14238 37207 5389 AMAZON-02, US 9808 13507 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12670 3301 571 UNINET, MX 12479 7297 1711 149 UNI2-AS, ES 7545 6067 832 593 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4769 3115 371 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4587 541 337 BBIL-AP BHARTI Airtel Ltd., IN 18403 4449 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13507 13390 CHINAMOBILE-CN China Mobile Communications Grou 8151 12670 12099 UNINET, MX 12479 7297 7148 UNI2-AS, ES 7545 6067 5474 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4449 4425 FPT-AS-AP FPT Telecom Company, VN 22773 4769 4398 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4587 4250 BBIL-AP BHARTI Airtel Ltd., IN 7552 4010 3982 VIETEL-AS-AP Viettel Group, VN 20940 3989 3862 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/RENU/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://bgp.nsrc.org/REN/RENU/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://bgp.nsrc.org/REN/RENU/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: 37100 SEACOM-AS, MU 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://bgp.nsrc.org/REN/RENU/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 /12:299 /13:582 /14:1202 /15:2104 /16:13723 /17:8259 /18:13671 /19:24953 /20:45087 /21:52505 /22:113769 /23:106226 /24:644484 /25:0 /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 6851 12670 UNINET, MX 12479 6234 7297 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3049 4769 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2433 14238 AMAZON-02, US 30036 2309 2652 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/RENU/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2448 2:1578 3:971 4:10 5:4990 6:190 7:6 8:1526 9:6 11:172 12:1232 13:571 14:2609 15:413 16:303 17:391 18:912 20:607 21:4 22:188 23:8160 24:2613 25:2 27:2776 29:19 31:3409 32:33 33:3 34:88 35:288 36:4597 37:4572 38:10486 39:1194 40:461 41:4631 42:1996 43:2893 44:402 45:19623 46:5141 47:380 49:2206 50:2054 51:598 52:1568 54:290 55:1108 56:11 57:311 58:2298 59:1401 60:1190 61:3345 62:3127 63:1761 64:5985 65:2130 66:5988 67:3249 68:1504 69:4282 70:1031 71:631 72:3048 74:2962 75:1526 76:602 77:2795 78:1924 79:1778 80:2319 81:2104 82:3845 83:1469 84:2027 85:3649 86:1108 87:2318 88:1346 89:4624 90:843 91:8456 92:2846 93:3017 94:4244 95:4582 96:1492 97:313 98:958 99:775 100:67 101:1196 102:4659 103:32528 104:5519 105:1143 106:907 107:2808 108:1203 109:4250 110:2297 111:3904 112:2789 113:1934 114:2104 115:2267 116:2165 117:3129 118:3054 119:2075 120:2376 121:1521 122:2971 123:2731 124:1686 125:2924 126:125 128:1584 129:1004 130:1521 131:2244 132:767 133:462 134:1621 135:399 136:1500 137:1145 138:2886 139:1602 140:1732 141:1551 142:2320 143:2132 144:1318 145:634 146:2176 147:2172 148:2786 149:2944 150:1314 151:2661 152:2296 153:623 154:9577 155:2256 156:4137 157:2222 158:1460 159:2674 160:3789 161:1991 162:4003 163:2331 164:1970 165:2612 166:1312 167:2141 168:3900 169:796 170:5458 171:1115 172:4505 173:3413 174:907 175:1376 176:3783 177:4738 178:4331 179:2317 180:2875 181:4316 182:3840 183:2600 184:2097 185:21831 186:5505 187:4769 188:4457 189:4497 190:9747 191:1564 192:11447 193:9514 194:7907 195:5662 196:3572 197:3864 198:6088 199:6101 200:8115 201:6392 202:10497 203:10674 204:4618 205:3674 206:4436 207:3752 208:4295 209:5420 210:4746 211:2704 212:4947 213:4057 214:1041 215:52 216:7152 217:3386 218:1606 219:422 220:2205 221:1280 222:769 223:3219 End of report