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 02 May, 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: 1043949 Prefixes after maximum aggregation (per Origin AS): 400783 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 515897 Number of IPv4 prefixes with a valid ROA: 627826 Number of IPv4 prefixes with an invalid ROA: 1613 Number of IPv4 prefixes with no ROA: 414510 Total ASes present in the Internet Routing Table: 78394 Prefixes per ASN: 13.32 Origin-only ASes present in the Internet Routing Table: 67232 Origin ASes announcing only one prefix: 27399 Transit ASes present in the Internet Routing Table: 11162 Transit-only ASes present in the Internet Routing Table: 590 Paths with bogon ASNs present in the IPv4 Routing Table: 257 Average AS path length visible in the Internet Routing Table: 4.9 Max AS path length visible: 215 Max AS path prepend of ASN (205624) 210 Prefixes from unregistered ASNs in the Routing Table: 1106 Number of instances of unregistered ASNs: 1148 Number of 32-bit ASNs allocated by the RIRs: 49605 Number of 32-bit ASNs visible in the Routing Table: 40511 Prefixes from 32-bit ASNs in the Routing Table: 230172 Number of bogon 32-bit ASNs visible in the Routing Table: 129 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 426 Number of addresses announced to Internet: 3103773696 Equivalent to 184 /8s, 255 /16s and 212 /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: 343303 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279370 Total APNIC prefixes after maximum aggregation: 82537 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 265652 Unique aggregates announced from the APNIC address blocks: 107718 APNIC Region origin ASes present in the Internet Routing Table: 15132 APNIC Prefixes per ASN: 17.56 APNIC Region origin ASes announcing only one prefix: 4654 APNIC Region transit ASes present in the Internet Routing Table: 2021 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 45 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10734 Number of APNIC addresses announced to Internet: 747648000 Equivalent to 44 /8s, 144 /16s and 52 /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: 303661 Total ARIN prefixes after maximum aggregation: 136355 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 303023 Unique aggregates announced from the ARIN address blocks: 147524 ARIN Region origin ASes present in the Internet Routing Table: 19409 ARIN Prefixes per ASN: 15.61 ARIN Region origin ASes announcing only one prefix: 7114 ARIN Region transit ASes present in the Internet Routing Table: 1920 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: 5560 Number of ARIN addresses announced to Internet: 1348250112 Equivalent to 80 /8s, 92 /16s and 170 /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: 291033 Total RIPE prefixes after maximum aggregation: 143170 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 293686 Unique aggregates announced from the RIPE address blocks: 190874 RIPE Region origin ASes present in the Internet Routing Table: 29478 RIPE Prefixes per ASN: 9.96 RIPE Region origin ASes announcing only one prefix: 12216 RIPE Region transit ASes present in the Internet Routing Table: 4057 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 215 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13385 Number of RIPE addresses announced to Internet: 733308928 Equivalent to 43 /8s, 181 /16s and 104 /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: 128831 Total LACNIC prefixes after maximum aggregation: 30848 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 123333 Unique aggregates announced from the LACNIC address blocks: 50258 LACNIC Region origin ASes present in the Internet Routing Table: 11390 LACNIC Prefixes per ASN: 10.83 LACNIC Region origin ASes announcing only one prefix: 2699 LACNIC Region transit ASes present in the Internet Routing Table: 2592 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: 9434 Number of LACNIC addresses announced to Internet: 170002688 Equivalent to 10 /8s, 34 /16s and 9 /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: 39948 Total AfriNIC prefixes after maximum aggregation: 7202 AfriNIC Deaggregation factor: 5.55 Prefixes being announced from the AfriNIC address blocks: 57829 Unique aggregates announced from the AfriNIC address blocks: 19153 AfriNIC Region origin ASes present in the Internet Routing Table: 2033 AfriNIC Prefixes per ASN: 28.45 AfriNIC Region origin ASes announcing only one prefix: 716 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 4.5 Max AfriNIC Region AS path length visible: 62 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1398 Number of AfriNIC addresses announced to Internet: 104366592 Equivalent to 6 /8s, 56 /16s and 130 /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 13863 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5883 826 483 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4936 551 321 BBIL-AP BHARTI Airtel Ltd., IN 7552 4060 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3705 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3538 887 177 CMNET-JIANGSU-AP China Mobile communicati 17561 3485 219 572 LCS-AS-AP LARUS Limited, HK 45899 3358 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 2907 813 663 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2507 273 1955 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 14832 41289 5688 AMAZON-02 - Amazon.com, Inc., US 22773 4776 3116 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4653 309 1047 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3724 1305 75 SHAW - Shaw Communications, CA 174 3408 8770 846 COGENT-174 - Cogent Communications, LLC, 396982 3335 4864 504 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 2720 222 904 AS-COLOCROSSING - HostPapa, US 7029 2671 2561 926 WINDSTREAM - Windstream Communications LL 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 7171 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 20940 3915 3389 111 AKAMAI-ASN1, NL 9009 3897 358 2277 M247, RO 12389 3142 2321 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2760 201 2035 CDNEXT, GB 34984 2451 365 579 TELLCOM-AS, TR 8452 1725 1852 14 TE-AS TE-AS, EG 203020 1663 252 831 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 12844 3293 629 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2432 506 350 Mega Cable, S.A. de C.V., MX 11830 1936 369 65 Instituto Costarricense de Electricidad y 11664 1446 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1375 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1229 379 23 INTEGRATEL PERU S.A.A., PE 22884 1074 71 365 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1071 2392 100 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 2027 649 36 RAYA-AS, EG 36992 1859 1533 336 ETISALAT-MISR, EG 20011 1341 206 353 NTT-DATA-Inc, ZA 24863 1273 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1225 520 41 Vodafone-, EG 37069 1117 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 328608 572 54 159 Africa-on-Cloud-AS, ZA 3741 555 724 322 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 14832 41289 5688 AMAZON-02 - Amazon.com, Inc., US 9808 13863 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12844 3293 629 UNINET, MX 12479 7171 1711 149 UNI2-AS, ES 7545 5883 826 483 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4936 551 321 BBIL-AP BHARTI Airtel Ltd., IN 22773 4776 3116 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4653 309 1047 CABLEONE - CABLE ONE, INC., US 7552 4060 1332 28 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 13863 13742 CHINAMOBILE-CN China Mobile Communications Grou 8151 12844 12215 UNINET, MX 12479 7171 7022 UNI2-AS, ES 7545 5883 5400 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4936 4615 BBIL-AP BHARTI Airtel Ltd., IN 22773 4776 4412 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4060 4032 VIETEL-AS-AP Viettel Group, VN 20940 3915 3804 AKAMAI-ASN1, NL 7155 3870 3780 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 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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: 37100 SEACOM-AS, MU 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 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, 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 /10:39 /11:95 /12:298 /13:584 /14:1191 /15:2101 /16:13631 /17:8315 /18:13358 /19:25458 /20:45563 /21:52444 /22:113683 /23:107431 /24:659728 /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 7045 12844 UNINET, MX 12479 6112 7171 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3517 4653 CABLEONE - CABLE ONE, INC., US 6327 3506 3724 SHAW - Shaw Communications, CA 22773 3055 4776 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2673 14832 AMAZON-02 - Amazon.com, Inc., US 30036 2276 2622 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3429 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) ---------------------------------------------- 1:2011 2:2049 3:1006 4:5 5:5100 6:198 7:6 8:1508 9:43 11:172 12:1185 13:700 14:2701 15:463 16:208 17:441 18:920 20:597 21:4 22:188 23:8244 24:2780 25:2 27:2748 28:1 29:19 31:3492 32:37 34:91 35:284 36:4741 37:4441 38:10181 39:1294 40:442 41:4751 42:1297 43:3096 44:448 45:19862 46:4884 47:413 48:127 49:2243 50:2015 51:693 52:1327 54:290 55:1199 56:11 57:329 58:2326 59:1376 60:1175 61:3132 62:3153 63:1704 64:6378 65:2137 66:6132 67:3269 68:1498 69:4217 70:1059 71:609 72:3187 74:3046 75:1502 76:590 77:2914 78:2005 79:1795 80:2355 81:2277 82:4147 83:1451 84:2145 85:3845 86:1087 87:2632 88:1338 89:4799 90:810 91:8480 92:2824 93:3020 94:4402 95:4735 96:1453 97:316 98:943 99:832 100:70 101:1361 102:5004 103:32320 104:5379 105:1204 106:899 107:2893 108:1252 109:4256 110:2281 111:4124 112:3176 113:1875 114:2284 115:2249 116:2140 117:3491 118:2699 119:2044 120:2709 121:1524 122:2984 123:2288 124:1656 125:3004 126:126 128:1577 129:1009 130:1643 131:2475 132:895 133:486 134:1675 135:610 136:1541 137:1350 138:3349 139:1614 140:1764 141:1736 142:2551 143:2093 144:1772 145:637 146:2187 147:2241 148:2799 149:3206 150:1369 151:2911 152:2332 153:1498 154:10380 155:2311 156:4921 157:2320 158:1579 159:2865 160:3887 161:1961 162:4045 163:2525 164:2418 165:2666 166:1278 167:2311 168:4050 169:885 170:5589 171:1131 172:4776 173:3464 174:880 175:1352 176:3884 177:4875 178:4389 179:2337 180:3042 181:4568 182:4005 183:2800 184:2014 185:21941 186:6082 187:5034 188:4551 189:4559 190:9865 191:1665 192:11488 193:9636 194:7908 195:5833 196:3710 197:4017 198:6127 199:6084 200:8121 201:6412 202:10457 203:10499 204:4781 205:3673 206:4626 207:3855 208:4379 209:5423 210:4613 211:2683 212:5113 213:4107 214:1046 215:47 216:7297 217:3622 218:1696 219:414 220:2184 221:1314 222:934 223:3430 End of report