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 26 Apr, 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: 998848 Prefixes after maximum aggregation (per Origin AS): 376577 Deaggregation factor: 2.65 Unique aggregates announced (without unneeded subnets): 479089 Number of IPv4 prefixes with a valid ROA: 553960 Number of IPv4 prefixes with an invalid ROA: 418 Number of IPv4 prefixes with no ROA: 444469 Total ASes present in the Internet Routing Table: 76834 Prefixes per ASN: 13.00 Origin-only ASes present in the Internet Routing Table: 65938 Origin ASes announcing only one prefix: 26592 Transit ASes present in the Internet Routing Table: 10896 Transit-only ASes present in the Internet Routing Table: 540 Paths with bogon ASNs present in the IPv4 Routing Table: 78 Average AS path length visible in the Internet Routing Table: 5.0 Max AS path length visible: 128 Max AS path prepend of ASN ( 37447) 125 Prefixes from unregistered ASNs in the Routing Table: 1082 Number of instances of unregistered ASNs: 1083 Number of 32-bit ASNs allocated by the RIRs: 46285 Number of 32-bit ASNs visible in the Routing Table: 38199 Prefixes from 32-bit ASNs in the Routing Table: 207550 Number of bogon 32-bit ASNs visible in the Routing Table: 20 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 468 Number of addresses announced to Internet: 3106450944 Equivalent to 185 /8s, 40 /16s and 174 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 330495 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 258060 Total APNIC prefixes after maximum aggregation: 76473 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 249579 Unique aggregates announced from the APNIC address blocks: 103060 APNIC Region origin ASes present in the Internet Routing Table: 14588 APNIC Prefixes per ASN: 17.11 APNIC Region origin ASes announcing only one prefix: 4452 APNIC Region transit ASes present in the Internet Routing Table: 1942 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: 10120 Number of APNIC addresses announced to Internet: 748535040 Equivalent to 44 /8s, 157 /16s and 189 /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: 292635 Total ARIN prefixes after maximum aggregation: 129458 ARIN Deaggregation factor: 2.26 Prefixes being announced from the ARIN address blocks: 294158 Unique aggregates announced from the ARIN address blocks: 138419 ARIN Region origin ASes present in the Internet Routing Table: 19225 ARIN Prefixes per ASN: 15.30 ARIN Region origin ASes announcing only one prefix: 7039 ARIN Region transit ASes present in the Internet Routing Table: 1955 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: 5194 Number of ARIN addresses announced to Internet: 1348872960 Equivalent to 80 /8s, 102 /16s and 43 /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: 276897 Total RIPE prefixes after maximum aggregation: 133768 RIPE Deaggregation factor: 2.07 Prefixes being announced from the RIPE address blocks: 274360 Unique aggregates announced from the RIPE address blocks: 174041 RIPE Region origin ASes present in the Internet Routing Table: 28955 RIPE Prefixes per ASN: 9.48 RIPE Region origin ASes announcing only one prefix: 12054 RIPE Region transit ASes present in the Internet Routing Table: 3950 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 24 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12428 Number of RIPE addresses announced to Internet: 731795200 Equivalent to 43 /8s, 158 /16s and 79 /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: 132263 Total LACNIC prefixes after maximum aggregation: 29392 LACNIC Deaggregation factor: 4.50 Prefixes being announced from the LACNIC address blocks: 128711 Unique aggregates announced from the LACNIC address blocks: 48759 LACNIC Region origin ASes present in the Internet Routing Table: 11228 LACNIC Prefixes per ASN: 11.46 LACNIC Region origin ASes announcing only one prefix: 2393 LACNIC Region transit ASes present in the Internet Routing Table: 2472 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: 9175 Number of LACNIC addresses announced to Internet: 171756800 Equivalent to 10 /8s, 60 /16s and 205 /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: 37911 Total AfriNIC prefixes after maximum aggregation: 6841 AfriNIC Deaggregation factor: 5.54 Prefixes being announced from the AfriNIC address blocks: 51572 Unique aggregates announced from the AfriNIC address blocks: 14425 AfriNIC Region origin ASes present in the Internet Routing Table: 1916 AfriNIC Prefixes per ASN: 26.92 AfriNIC Region origin ASes announcing only one prefix: 654 AfriNIC Region transit ASes present in the Internet Routing Table: 382 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 128 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1282 Number of AfriNIC addresses announced to Internet: 105267712 Equivalent to 6 /8s, 70 /16s and 66 /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 10365 8753 92 CHINAMOBILE-CN China Mobile Communication 7545 6212 843 653 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4259 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4236 531 277 BBIL-AP BHARTI Airtel Ltd., IN 7552 3920 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3677 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3269 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2858 851 538 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4766 2180 11524 640 KIXS-AS-KR Korea Telecom, KR 45090 2171 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 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 13258 39705 4095 AMAZON-02, US 174 5556 8756 922 COGENT-174, US 11492 4701 312 586 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3619 1320 81 SHAW, CA 22773 3395 3034 183 ASN-CXA-ALL-CCI-22773-RDC, US 749 3255 54879 2506 DNIC-AS-00749, US 16625 3073 1291 2244 AKAMAI-AS, US 396982 2966 3651 474 GOOGLE-CLOUD-PLATFORM, US 36352 2735 225 835 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 7721 1714 145 UNI2-AS, ES 39891 4797 293 62 ALJAWWALSTC-AS, SA 20940 4019 3395 126 AKAMAI-ASN1, NL 9009 3779 326 1966 M247, RO 12389 3069 2303 886 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2362 360 584 TELLCOM-AS, TR 212238 2113 150 1549 CDNEXT, GB 8452 1640 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 8551 1427 366 33 BEZEQ-INTERNATIONAL-AS Bezeqint Internet 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 11996 3243 595 UNINET, MX 10620 3516 485 994 Telmex Colombia S.A., CO 13999 2508 539 364 Mega Cable, S.A. de C.V., MX 11830 1993 369 64 Instituto Costarricense de Electricidad y 28573 1358 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1332 784 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1192 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1189 371 21 Telefonica del Peru S.A.A., PE 28202 1129 52 9 Rede Brasileira de Comunicacao SA, BR 22884 1055 67 379 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 1743 607 31 RAYA-AS, EG 24863 1654 389 18 LINKdotNET-AS, EG 29571 1589 102 22 ORANGE-COTE-IVOIRE, CI 36992 1433 1518 283 ETISALAT-MISR, EG 20011 1295 204 345 INTERNET-SOLUTIONS, ZA 36903 1249 554 96 MT-MPLS, MA 36935 1020 521 42 Vodafone-, EG 37069 932 1099 15 MOBINIL, EG 37457 587 316 32 Telkom-Internet, ZA 3741 560 661 319 IS, 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 13258 39705 4095 AMAZON-02, US 8151 11996 3243 595 UNINET, MX 9808 10365 8753 92 CHINAMOBILE-CN China Mobile Communication 12479 7721 1714 145 UNI2-AS, ES 7545 6212 843 653 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5556 8756 922 COGENT-174, US 39891 4797 293 62 ALJAWWALSTC-AS, SA 11492 4701 312 586 CABLEONE, US 18403 4259 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4236 531 277 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 11996 11401 UNINET, MX 9808 10365 10273 CHINAMOBILE-CN China Mobile Communications Grou 12479 7721 7576 UNI2-AS, ES 7545 6212 5559 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 4735 ALJAWWALSTC-AS, SA 174 5556 4634 COGENT-174, US 18403 4259 4234 FPT-AS-AP FPT Telecom Company, VN 11492 4701 4115 CABLEONE, US 9498 4236 3959 BBIL-AP BHARTI Airtel Ltd., IN 7552 3920 3894 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 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 23.152.48.0/24 Origin: 46167 RESERVED, ZZ 23.152.48.0/24 Transit: 7018 ATT-INTERNET4, US 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 /9:16 /10:41 /11:93 /12:300 /13:583 /14:1228 /15:2181 /16:13987 /17:8350 /18:13913 /19:24775 /20:44190 /21:52461 /22:113381 /23:105780 /24:617553 /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 6642 7721 UNI2-AS, ES 8151 6180 11996 UNINET, MX 11492 3531 4701 CABLEONE, US 39891 3489 4797 ALJAWWALSTC-AS, SA 6327 3416 3619 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2532 3395 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2359 13258 AMAZON-02, US 30036 2223 2563 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2182 3516 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) ---------------------------------------------- 1:2352 2:1532 3:624 4:9 5:4944 6:163 7:6 8:1560 9:1 11:172 12:1372 13:352 14:2505 15:352 16:282 17:367 18:920 20:519 21:4 22:188 23:7527 24:2894 25:2 27:2770 29:19 31:3264 32:44 34:84 35:206 36:2404 37:4686 38:10278 39:907 40:166 41:4450 42:1906 43:2595 44:378 45:19236 46:5062 47:293 49:1941 50:1901 51:591 52:1557 54:298 55:1085 56:11 57:264 58:2205 59:1284 60:1171 61:2992 62:3018 63:1838 64:5529 65:2206 66:4702 67:3101 68:1123 69:4013 70:1066 71:624 72:2924 74:2814 75:1624 76:614 77:2838 78:1886 79:1753 80:2216 81:2067 82:3181 83:1435 84:1852 85:3409 86:1047 87:2410 88:1299 89:4332 90:785 91:8409 92:2726 93:2902 94:4082 95:4359 96:1464 97:312 98:995 99:669 100:72 101:1402 102:4296 103:32331 104:4826 105:1229 106:1043 107:2622 108:1218 109:4124 110:2230 111:3351 112:2048 113:1812 114:1972 115:2245 116:2074 117:2736 118:2824 119:1959 120:1883 121:1370 122:2775 123:2405 124:1587 125:2863 126:91 128:1586 129:1017 130:1321 131:1975 132:759 133:450 134:1541 135:377 136:1315 137:1127 138:3058 139:1612 140:1576 141:1495 142:1929 143:1667 144:1060 145:518 146:2161 147:2104 148:2671 149:2955 150:1258 151:1754 152:2116 153:570 154:8385 155:1655 156:3241 157:1882 158:1292 159:2438 160:3662 161:1923 162:3761 163:2096 164:1709 165:2228 166:1446 167:1896 168:4236 169:800 170:5299 171:1007 172:4497 173:3275 174:906 175:1301 176:3725 177:5482 178:3774 179:2708 180:2636 181:4197 182:3388 183:2028 184:2144 185:21736 186:5470 187:4812 188:4223 189:4428 190:9788 191:1923 192:11272 193:9483 194:7845 195:5619 196:3671 197:3812 198:6122 199:8490 200:8519 201:6406 202:10443 203:10691 204:4531 205:3655 206:4611 207:3451 208:4247 209:5188 210:4607 211:2532 212:4567 213:3826 214:1025 215:48 216:6666 217:3202 218:1348 219:385 220:2084 221:1060 222:721 223:2350 End of report