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 04 Apr, 2026 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: 1037221 Prefixes after maximum aggregation (per Origin AS): 398887 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 512158 Number of IPv4 prefixes with a valid ROA: 625625 Number of IPv4 prefixes with an invalid ROA: 1384 Number of IPv4 prefixes with no ROA: 410212 Total ASes present in the Internet Routing Table: 78243 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 67091 Origin ASes announcing only one prefix: 27330 Transit ASes present in the Internet Routing Table: 11152 Transit-only ASes present in the Internet Routing Table: 588 Paths with bogon ASNs present in the IPv4 Routing Table: 288 Average AS path length visible in the Internet Routing Table: 4.9 Max AS path length visible: 69 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1149 Number of instances of unregistered ASNs: 1203 Number of 32-bit ASNs allocated by the RIRs: 49218 Number of 32-bit ASNs visible in the Routing Table: 40284 Prefixes from 32-bit ASNs in the Routing Table: 227463 Number of bogon 32-bit ASNs visible in the Routing Table: 156 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 408 Number of addresses announced to Internet: 3108239872 Equivalent to 185 /8s, 67 /16s and 250 /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: 340862 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 278224 Total APNIC prefixes after maximum aggregation: 82316 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 265189 Unique aggregates announced from the APNIC address blocks: 107539 APNIC Region origin ASes present in the Internet Routing Table: 15103 APNIC Prefixes per ASN: 17.56 APNIC Region origin ASes announcing only one prefix: 4655 APNIC Region transit ASes present in the Internet Routing Table: 2028 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10695 Number of APNIC addresses announced to Internet: 753008640 Equivalent to 44 /8s, 226 /16s and 0 /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: 302348 Total ARIN prefixes after maximum aggregation: 135803 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301984 Unique aggregates announced from the ARIN address blocks: 146618 ARIN Region origin ASes present in the Internet Routing Table: 19409 ARIN Prefixes per ASN: 15.56 ARIN Region origin ASes announcing only one prefix: 7111 ARIN Region transit ASes present in the Internet Routing Table: 1940 Average ARIN Region AS path length visible: 4.7 Max ARIN Region AS path length visible: 58 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5542 Number of ARIN addresses announced to Internet: 1348263680 Equivalent to 80 /8s, 92 /16s and 223 /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, 393216-404380 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: 288264 Total RIPE prefixes after maximum aggregation: 142094 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 290131 Unique aggregates announced from the RIPE address blocks: 188196 RIPE Region origin ASes present in the Internet Routing Table: 29382 RIPE Prefixes per ASN: 9.87 RIPE Region origin ASes announcing only one prefix: 12171 RIPE Region transit ASes present in the Internet Routing Table: 4019 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13253 Number of RIPE addresses announced to Internet: 732847616 Equivalent to 43 /8s, 174 /16s and 94 /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: 127603 Total LACNIC prefixes after maximum aggregation: 30777 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 123057 Unique aggregates announced from the LACNIC address blocks: 50167 LACNIC Region origin ASes present in the Internet Routing Table: 11383 LACNIC Prefixes per ASN: 10.81 LACNIC Region origin ASes announcing only one prefix: 2684 LACNIC Region transit ASes present in the Internet Routing Table: 2598 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9410 Number of LACNIC addresses announced to Internet: 169928192 Equivalent to 10 /8s, 32 /16s and 230 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 39633 Total AfriNIC prefixes after maximum aggregation: 7161 AfriNIC Deaggregation factor: 5.53 Prefixes being announced from the AfriNIC address blocks: 56452 Unique aggregates announced from the AfriNIC address blocks: 19292 AfriNIC Region origin ASes present in the Internet Routing Table: 2018 AfriNIC Prefixes per ASN: 27.97 AfriNIC Region origin ASes announcing only one prefix: 709 AfriNIC Region transit ASes present in the Internet Routing Table: 377 Average AfriNIC Region AS path length visible: 4.6 Max AfriNIC Region AS path length visible: 62 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1384 Number of AfriNIC addresses announced to Internet: 103931648 Equivalent to 6 /8s, 49 /16s and 223 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 13822 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5918 828 498 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4883 548 318 BBIL-AP BHARTI Airtel Ltd., IN 7552 4033 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3663 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3484 888 178 CMNET-JIANGSU-AP China Mobile communicati 45899 3331 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 3013 862 523 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2822 178 527 LCS-AS-AP LARUS Limited, HK 140292 2495 272 1953 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 14513 41229 5637 AMAZON-02 - Amazon.com, Inc., US 22773 4779 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4663 309 1029 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3718 1305 77 SHAW - Shaw Communications, CA 396982 3297 4857 489 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3245 8767 823 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2765 1225 2123 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2705 222 893 AS-COLOCROSSING - HostPapa, 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 7172 1711 149 UNI2-AS, ES 39891 4972 306 72 ALJAWWALSTC-AS, SA 20940 3948 3389 112 AKAMAI-ASN1, NL 9009 3856 356 2252 M247, RO 12389 3171 2323 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2701 195 1984 CDNEXT, GB 34984 2450 365 571 TELLCOM-AS, TR 8452 1724 1852 14 TE-AS TE-AS, EG 203020 1640 248 807 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 12826 3294 609 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2462 506 344 Mega Cable, S.A. de C.V., MX 11830 1948 369 65 Instituto Costarricense de Electricidad y 11664 1461 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1373 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1243 371 22 INTEGRATEL PERU S.A.A., PE 22884 1058 71 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1056 2393 96 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 2025 648 34 RAYA-AS, EG 36992 1855 1532 338 ETISALAT-MISR, EG 20011 1340 206 353 NTT-DATA-Inc, ZA 24863 1296 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1229 521 44 Vodafone-, EG 37069 1117 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 15399 559 57 55 WANANCHI-, KE 3741 557 724 324 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 14513 41229 5637 AMAZON-02 - Amazon.com, Inc., US 9808 13822 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12826 3294 609 UNINET, MX 12479 7172 1711 149 UNI2-AS, ES 7545 5918 828 498 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 306 72 ALJAWWALSTC-AS, SA 9498 4883 548 318 BBIL-AP BHARTI Airtel Ltd., IN 22773 4779 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4663 309 1029 CABLEONE - CABLE ONE, INC., US 7552 4033 1332 29 VIETEL-AS-AP Viettel Group, 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 13822 13701 CHINAMOBILE-CN China Mobile Communications Grou 8151 12826 12217 UNINET, MX 12479 7172 7023 UNI2-AS, ES 7545 5918 5420 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 4900 ALJAWWALSTC-AS, SA 9498 4883 4565 BBIL-AP BHARTI Airtel Ltd., IN 22773 4779 4413 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4033 4004 VIETEL-AS-AP Viettel Group, VN 20940 3948 3836 AKAMAI-ASN1, NL 7155 3861 3776 VIASAT-SP-BACKBONE - ViaSat,Inc., US 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 - C 396894 UNALLOCATED 8.28.201.0/24 46887 CROWNCASTLE-AS46887 - C 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 33132 CROWNCASTLE-AS33132 - C 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3 - Level 3 Parent 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 - Hurricane Electric LLC, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., 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: 30844 LIQUID-AS, GB 23.139.61.0/24 Origin: 401731 ROLL-TIDE - The University of Alabama At 23.139.61.0/24 Transit: 19684 OGITAL - Latigo, LLC, US 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 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 /10:40 /11:95 /12:299 /13:584 /14:1196 /15:2098 /16:13614 /17:8287 /18:13328 /19:25436 /20:45535 /21:52280 /22:113806 /23:107132 /24:653461 /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 7000 12826 UNINET, MX 12479 6114 7172 UNI2-AS, ES 39891 3656 4972 ALJAWWALSTC-AS, SA 11492 3523 4663 CABLEONE - CABLE ONE, INC., US 6327 3500 3718 SHAW - Shaw Communications, CA 22773 3055 4779 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2618 14513 AMAZON-02 - Amazon.com, Inc., US 30036 2312 2661 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3453 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) ---------------------------------------------- 1:2015 2:1817 3:992 4:5 5:5112 6:196 7:6 8:1506 9:39 11:172 12:1190 13:674 14:2667 15:456 16:170 17:423 18:910 20:591 21:4 22:188 23:8260 24:2857 25:2 27:2761 28:1 29:19 31:3424 32:37 34:91 35:281 36:4641 37:4446 38:10047 39:1278 40:422 41:4719 42:1310 43:3023 44:448 45:19929 46:4904 47:408 48:120 49:2232 50:2004 51:626 52:1293 54:272 55:1106 56:11 57:326 58:2328 59:1377 60:1173 61:3135 62:3149 63:1740 64:6296 65:2152 66:6080 67:3264 68:1498 69:4216 70:1060 71:607 72:3183 74:3016 75:1485 76:593 77:2921 78:1957 79:1787 80:2369 81:2232 82:4037 83:1450 84:2120 85:3797 86:1091 87:2452 88:1352 89:4695 90:785 91:8429 92:2829 93:3015 94:4359 95:4665 96:1450 97:315 98:945 99:809 100:68 101:1360 102:4964 103:32329 104:5338 105:1105 106:909 107:2864 108:1226 109:4233 110:2288 111:4133 112:3157 113:1876 114:2265 115:2236 116:2155 117:3509 118:2660 119:2076 120:2688 121:1525 122:2975 123:2269 124:1655 125:2988 126:125 128:1601 129:1015 130:1612 131:2465 132:800 133:475 134:1669 135:613 136:1599 137:1348 138:3268 139:1630 140:1761 141:1723 142:2523 143:2137 144:1698 145:644 146:2197 147:2178 148:2765 149:3098 150:1355 151:2764 152:2321 153:1008 154:9715 155:2318 156:4468 157:2277 158:1524 159:2816 160:3860 161:1958 162:4030 163:2466 164:2049 165:2634 166:1270 167:2274 168:4013 169:868 170:5561 171:1117 172:4556 173:3465 174:881 175:1352 176:3820 177:4860 178:4385 179:2310 180:3006 181:4500 182:3997 183:2806 184:2021 185:21867 186:5778 187:4977 188:4610 189:4542 190:9849 191:1575 192:11496 193:9583 194:7888 195:5819 196:3661 197:4031 198:6117 199:6079 200:8110 201:6400 202:10482 203:10503 204:4758 205:3724 206:4538 207:3829 208:4379 209:5411 210:4619 211:2685 212:5033 213:4124 214:1056 215:47 216:7278 217:3592 218:1698 219:421 220:2194 221:1312 222:929 223:3403 End of report