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 07 Jun, 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: 1003147 Prefixes after maximum aggregation (per Origin AS): 379659 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 482254 Number of IPv4 prefixes with a valid ROA: 560524 Number of IPv4 prefixes with an invalid ROA: 543 Number of IPv4 prefixes with no ROA: 442080 Total ASes present in the Internet Routing Table: 76909 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66001 Origin ASes announcing only one prefix: 26565 Transit ASes present in the Internet Routing Table: 10908 Transit-only ASes present in the Internet Routing Table: 551 Paths with bogon ASNs present in the IPv4 Routing Table: 90 Average AS path length visible in the Internet Routing Table: 5.0 Max AS path length visible: 78 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1047 Number of instances of unregistered ASNs: 1076 Number of 32-bit ASNs allocated by the RIRs: 46622 Number of 32-bit ASNs visible in the Routing Table: 38358 Prefixes from 32-bit ASNs in the Routing Table: 209652 Number of bogon 32-bit ASNs visible in the Routing Table: 84 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 444 Number of addresses announced to Internet: 3110406400 Equivalent to 185 /8s, 101 /16s and 9 /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: 331244 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 259877 Total APNIC prefixes after maximum aggregation: 77068 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 251288 Unique aggregates announced from the APNIC address blocks: 104323 APNIC Region origin ASes present in the Internet Routing Table: 14588 APNIC Prefixes per ASN: 17.23 APNIC Region origin ASes announcing only one prefix: 4447 APNIC Region transit ASes present in the Internet Routing Table: 1931 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10126 Number of APNIC addresses announced to Internet: 748874752 Equivalent to 44 /8s, 162 /16s and 236 /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: 293400 Total ARIN prefixes after maximum aggregation: 130990 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 295423 Unique aggregates announced from the ARIN address blocks: 139534 ARIN Region origin ASes present in the Internet Routing Table: 19228 ARIN Prefixes per ASN: 15.36 ARIN Region origin ASes announcing only one prefix: 7050 ARIN Region transit ASes present in the Internet Routing Table: 1950 Average ARIN Region AS path length visible: 4.8 Max ARIN Region AS path length visible: 25 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5224 Number of ARIN addresses announced to Internet: 1353019648 Equivalent to 80 /8s, 165 /16s and 113 /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: 278043 Total RIPE prefixes after maximum aggregation: 134591 RIPE Deaggregation factor: 2.07 Prefixes being announced from the RIPE address blocks: 276255 Unique aggregates announced from the RIPE address blocks: 175435 RIPE Region origin ASes present in the Internet Routing Table: 28978 RIPE Prefixes per ASN: 9.53 RIPE Region origin ASes announcing only one prefix: 12062 RIPE Region transit ASes present in the Internet Routing Table: 3967 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: 12496 Number of RIPE addresses announced to Internet: 731351040 Equivalent to 43 /8s, 151 /16s and 136 /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: 132846 Total LACNIC prefixes after maximum aggregation: 29579 LACNIC Deaggregation factor: 4.49 Prefixes being announced from the LACNIC address blocks: 129050 Unique aggregates announced from the LACNIC address blocks: 48987 LACNIC Region origin ASes present in the Internet Routing Table: 11268 LACNIC Prefixes per ASN: 11.45 LACNIC Region origin ASes announcing only one prefix: 2346 LACNIC Region transit ASes present in the Internet Routing Table: 2508 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 56 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9222 Number of LACNIC addresses announced to Internet: 171932160 Equivalent to 10 /8s, 63 /16s and 122 /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: 37934 Total AfriNIC prefixes after maximum aggregation: 6801 AfriNIC Deaggregation factor: 5.58 Prefixes being announced from the AfriNIC address blocks: 50687 Unique aggregates announced from the AfriNIC address blocks: 13580 AfriNIC Region origin ASes present in the Internet Routing Table: 1924 AfriNIC Prefixes per ASN: 26.34 AfriNIC Region origin ASes announcing only one prefix: 660 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 78 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1290 Number of AfriNIC addresses announced to Internet: 105025792 Equivalent to 6 /8s, 66 /16s and 145 /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 11063 8755 95 CHINAMOBILE-CN China Mobile Communication 7545 6176 844 646 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4427 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4305 534 304 BBIL-AP BHARTI Airtel Ltd., IN 7552 3923 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3698 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3277 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2881 854 529 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 45090 2173 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 4755 2171 434 192 TATACOMM-AS TATA Communications formerly 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 13633 40955 5210 AMAZON-02, US 174 5223 8746 889 COGENT-174, US 11492 4760 316 593 CABLEONE, US 7155 3863 286 85 VIASAT-SP-BACKBONE, US 6327 3629 1320 81 SHAW, CA 22773 3349 3033 169 ASN-CXA-ALL-CCI-22773-RDC, US 749 3229 54783 2480 DNIC-AS-00749, US 396982 3182 3853 424 GOOGLE-CLOUD-PLATFORM, US 16625 3098 1295 2257 AKAMAI-AS, US 36352 2815 230 855 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 7684 1714 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4013 3395 126 AKAMAI-ASN1, NL 9009 3895 358 2074 M247, RO 12389 3109 2306 888 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2391 360 580 TELLCOM-AS, TR 212238 2217 161 1611 CDNEXT, GB 8452 1612 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 62240 1422 94 739 CLOUVIDER Clouvider - Global ASN, GB 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 12208 3255 582 UNINET, MX 10620 3499 480 1017 Telmex Colombia S.A., CO 13999 2548 540 363 Mega Cable, S.A. de C.V., MX 11830 1991 369 64 Instituto Costarricense de Electricidad y 28573 1371 2436 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1340 787 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1199 371 22 Telefonica del Peru S.A.A., PE 11664 1195 278 33 Techtel LMDS Comunicaciones Interactivas 28202 1113 52 9 MASTER SA, BR 22884 1064 68 376 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 1780 644 27 RAYA-AS, EG 24863 1634 389 17 LINKdotNET-AS, EG 29571 1614 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1519 280 ETISALAT-MISR, EG 20011 1295 204 345 INTERNET-SOLUTIONS, ZA 36903 1247 553 104 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1050 520 44 Vodafone-, EG 3741 559 661 319 IS, ZA 36914 558 82 3 KENET-AS, KE 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 13633 40955 5210 AMAZON-02, US 8151 12208 3255 582 UNINET, MX 9808 11063 8755 95 CHINAMOBILE-CN China Mobile Communication 12479 7684 1714 148 UNI2-AS, ES 7545 6176 844 646 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5223 8746 889 COGENT-174, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4760 316 593 CABLEONE, US 18403 4427 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4305 534 304 BBIL-AP BHARTI Airtel Ltd., IN Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12208 11626 UNINET, MX 9808 11063 10968 CHINAMOBILE-CN China Mobile Communications Grou 12479 7684 7536 UNI2-AS, ES 7545 6176 5530 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4427 4402 FPT-AS-AP FPT Telecom Company, VN 174 5223 4334 COGENT-174, US 11492 4760 4167 CABLEONE, US 9498 4305 4001 BBIL-AP BHARTI Airtel Ltd., IN 7552 3923 3897 VIETEL-AS-AP Viettel Group, VN 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, 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 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 33132 CROWNCASTLE-AS33132, 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 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 6939 HURRICANE, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.155.208.0/24 Origin: 396169 AS-GHCIL-01, US 23.155.208.0/24 Transit: 35985 ONERINGNET-ATL-1, 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 /11:92 /12:299 /13:584 /14:1226 /15:2183 /16:13961 /17:8335 /18:13873 /19:24770 /20:44558 /21:52492 /22:113394 /23:106601 /24:620708 /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 12479 6603 7684 UNI2-AS, ES 8151 6388 12208 UNINET, MX 11492 3557 4760 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3426 3629 SHAW, CA 7155 2822 3863 VIASAT-SP-BACKBONE, US 22773 2498 3349 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2384 13633 AMAZON-02, US 30036 2243 2584 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2186 3499 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) ---------------------------------------------- 1:2383 2:1513 3:806 4:9 5:5005 6:162 7:6 8:1594 9:1 11:172 12:1356 13:438 14:2522 15:360 16:285 17:375 18:919 20:551 21:4 22:188 23:7603 24:2892 25:2 27:2785 29:19 31:3310 32:44 33:1 34:84 35:254 36:3059 37:4615 38:10389 39:909 40:172 41:4436 42:1959 43:2618 44:383 45:19281 46:5128 47:318 49:1980 50:1888 51:592 52:1571 54:324 55:1083 56:11 57:272 58:2210 59:1280 60:1171 61:3012 62:3032 63:1813 64:5500 65:2195 66:4714 67:3103 68:1134 69:4023 70:1078 71:636 72:2932 74:2821 75:1524 76:616 77:2816 78:1898 79:1715 80:2230 81:2073 82:3132 83:1449 84:1874 85:3441 86:1077 87:2399 88:1313 89:4406 90:771 91:8453 92:2716 93:2924 94:4065 95:4364 96:1475 97:311 98:979 99:697 100:73 101:1425 102:4260 103:32324 104:5102 105:1186 106:1033 107:2656 108:1260 109:4121 110:2239 111:3281 112:2132 113:1824 114:1990 115:2156 116:2098 117:2525 118:2819 119:1918 120:1975 121:1380 122:2796 123:2484 124:1604 125:2868 126:91 128:1602 129:1027 130:1326 131:2069 132:781 133:449 134:1555 135:380 136:1358 137:1139 138:3068 139:1587 140:1602 141:1499 142:1926 143:1843 144:1127 145:532 146:2191 147:2119 148:2726 149:2953 150:1261 151:1945 152:2102 153:587 154:7718 155:1753 156:3030 157:1904 158:1326 159:2489 160:3683 161:1899 162:3821 163:2203 164:1898 165:2252 166:1466 167:1972 168:4180 169:802 170:5352 171:1010 172:4449 173:3341 174:916 175:1299 176:3759 177:5413 178:3781 179:2480 180:2670 181:4250 182:3446 183:2139 184:2120 185:21779 186:5531 187:4833 188:4246 189:4477 190:9866 191:1911 192:11297 193:9508 194:7878 195:5616 196:3629 197:3772 198:6121 199:8545 200:8545 201:6487 202:10350 203:10725 204:4548 205:3615 206:4480 207:3485 208:4251 209:5178 210:4638 211:2527 212:4610 213:3788 214:1028 215:48 216:6807 217:3216 218:1372 219:391 220:2087 221:1125 222:719 223:2481 End of report