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 19 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: 998249 Prefixes after maximum aggregation (per Origin AS): 376127 Deaggregation factor: 2.65 Unique aggregates announced (without unneeded subnets): 477914 Number of IPv4 prefixes with a valid ROA: 551411 Number of IPv4 prefixes with an invalid ROA: 489 Number of IPv4 prefixes with no ROA: 446349 Total ASes present in the Internet Routing Table: 76836 Prefixes per ASN: 12.99 Origin-only ASes present in the Internet Routing Table: 65972 Origin ASes announcing only one prefix: 26550 Transit ASes present in the Internet Routing Table: 10864 Transit-only ASes present in the Internet Routing Table: 537 Paths with bogon ASNs present in the IPv4 Routing Table: 91 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: 1098 Number of instances of unregistered ASNs: 1104 Number of 32-bit ASNs allocated by the RIRs: 46245 Number of 32-bit ASNs visible in the Routing Table: 38175 Prefixes from 32-bit ASNs in the Routing Table: 207225 Number of bogon 32-bit ASNs visible in the Routing Table: 32 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 485 Number of addresses announced to Internet: 3107102720 Equivalent to 185 /8s, 50 /16s and 160 /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: 330012 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 257836 Total APNIC prefixes after maximum aggregation: 76421 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 249483 Unique aggregates announced from the APNIC address blocks: 102941 APNIC Region origin ASes present in the Internet Routing Table: 14579 APNIC Prefixes per ASN: 17.11 APNIC Region origin ASes announcing only one prefix: 4432 APNIC Region transit ASes present in the Internet Routing Table: 1938 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: 10099 Number of APNIC addresses announced to Internet: 748388096 Equivalent to 44 /8s, 155 /16s and 127 /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: 292482 Total ARIN prefixes after maximum aggregation: 129267 ARIN Deaggregation factor: 2.26 Prefixes being announced from the ARIN address blocks: 293715 Unique aggregates announced from the ARIN address blocks: 137839 ARIN Region origin ASes present in the Internet Routing Table: 19234 ARIN Prefixes per ASN: 15.27 ARIN Region origin ASes announcing only one prefix: 7034 ARIN Region transit ASes present in the Internet Routing Table: 1943 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: 5189 Number of ARIN addresses announced to Internet: 1349405440 Equivalent to 80 /8s, 110 /16s and 75 /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: 276709 Total RIPE prefixes after maximum aggregation: 133551 RIPE Deaggregation factor: 2.07 Prefixes being announced from the RIPE address blocks: 274382 Unique aggregates announced from the RIPE address blocks: 174038 RIPE Region origin ASes present in the Internet Routing Table: 28946 RIPE Prefixes per ASN: 9.48 RIPE Region origin ASes announcing only one prefix: 12050 RIPE Region transit ASes present in the Internet Routing Table: 3946 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 23 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12415 Number of RIPE addresses announced to Internet: 731960576 Equivalent to 43 /8s, 160 /16s and 213 /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: 132293 Total LACNIC prefixes after maximum aggregation: 29363 LACNIC Deaggregation factor: 4.51 Prefixes being announced from the LACNIC address blocks: 128779 Unique aggregates announced from the LACNIC address blocks: 48863 LACNIC Region origin ASes present in the Internet Routing Table: 11240 LACNIC Prefixes per ASN: 11.46 LACNIC Region origin ASes announcing only one prefix: 2377 LACNIC Region transit ASes present in the Internet Routing Table: 2468 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: 9186 Number of LACNIC addresses announced to Internet: 171783936 Equivalent to 10 /8s, 61 /16s and 55 /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: 37831 Total AfriNIC prefixes after maximum aggregation: 6866 AfriNIC Deaggregation factor: 5.51 Prefixes being announced from the AfriNIC address blocks: 51405 Unique aggregates announced from the AfriNIC address blocks: 13823 AfriNIC Region origin ASes present in the Internet Routing Table: 1920 AfriNIC Prefixes per ASN: 26.77 AfriNIC Region origin ASes announcing only one prefix: 657 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: 128 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1286 Number of AfriNIC addresses announced to Internet: 105335808 Equivalent to 6 /8s, 71 /16s and 76 /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 10344 8753 88 CHINAMOBILE-CN China Mobile Communication 7545 6211 843 653 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4255 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4220 530 274 BBIL-AP BHARTI Airtel Ltd., IN 7552 3924 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3673 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3268 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2856 850 537 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4766 2176 11524 637 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 13215 39709 4102 AMAZON-02, US 174 5387 8761 932 COGENT-174, US 11492 4694 311 587 CABLEONE, US 7155 3829 286 85 VIASAT-SP-BACKBONE, US 6327 3619 1320 81 SHAW, CA 22773 3398 3034 183 ASN-CXA-ALL-CCI-22773-RDC, US 749 3254 54879 2505 DNIC-AS-00749, US 16625 3076 1291 2246 AKAMAI-AS, US 396982 2957 3650 468 GOOGLE-CLOUD-PLATFORM, US 36352 2705 222 836 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 7703 1714 145 UNI2-AS, ES 39891 4797 293 62 ALJAWWALSTC-AS, SA 20940 4002 3395 128 AKAMAI-ASN1, NL 9009 3780 326 1964 M247, RO 12389 3069 2303 886 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2363 360 585 TELLCOM-AS, TR 212238 2096 148 1541 CDNEXT, GB 8452 1640 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 62240 1444 95 746 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 11982 3243 591 UNINET, MX 10620 3522 486 992 Telmex Colombia S.A., CO 13999 2511 539 364 Mega Cable, S.A. de C.V., MX 11830 1993 369 64 Instituto Costarricense de Electricidad y 28573 1356 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1333 784 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1191 371 22 Telefonica del Peru S.A.A., PE 11664 1183 278 33 Techtel LMDS Comunicaciones Interactivas 28202 1112 52 9 Rede Brasileira de Comunicacao SA, BR 22884 1053 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 1647 389 16 LINKdotNET-AS, EG 29571 1588 102 22 ORANGE-COTE-IVOIRE, CI 36992 1433 1518 283 ETISALAT-MISR, EG 20011 1296 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 6713 561 1861 35 IAM-AS, MA 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 13215 39709 4102 AMAZON-02, US 8151 11982 3243 591 UNINET, MX 9808 10344 8753 88 CHINAMOBILE-CN China Mobile Communication 12479 7703 1714 145 UNI2-AS, ES 7545 6211 843 653 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5387 8761 932 COGENT-174, US 39891 4797 293 62 ALJAWWALSTC-AS, SA 11492 4694 311 587 CABLEONE, US 18403 4255 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4220 530 274 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 11982 11391 UNINET, MX 9808 10344 10256 CHINAMOBILE-CN China Mobile Communications Grou 12479 7703 7558 UNI2-AS, ES 7545 6211 5558 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 4735 ALJAWWALSTC-AS, SA 174 5387 4455 COGENT-174, US 18403 4255 4230 FPT-AS-AP FPT Telecom Company, VN 11492 4694 4107 CABLEONE, US 9498 4220 3946 BBIL-AP BHARTI Airtel Ltd., IN 7552 3924 3898 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 46559 UNALLOCATED 8.3.52.0/23 3257 GTT-BACKBONE GTT, US 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 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 23.138.4.0/24 Origin: 16509 AMAZON-02, US 23.138.4.0/24 Transit: 37100 SEACOM-AS, MU 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 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 /13:584 /14:1230 /15:2180 /16:14002 /17:8360 /18:13925 /19:24799 /20:44320 /21:52571 /22:113431 /23:105796 /24:616585 /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 6624 7703 UNI2-AS, ES 8151 6166 11982 UNINET, MX 11492 3531 4694 CABLEONE, US 39891 3489 4797 ALJAWWALSTC-AS, SA 6327 3416 3619 SHAW, CA 7155 2787 3829 VIASAT-SP-BACKBONE, US 22773 2535 3398 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2349 13215 AMAZON-02, US 30036 2218 2558 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2188 3522 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) ---------------------------------------------- 1:2353 2:1530 3:618 4:10 5:4918 6:163 7:6 8:1560 9:1 11:172 12:1371 13:354 14:2515 15:352 16:283 17:367 18:923 20:519 21:4 22:188 23:7471 24:2895 25:2 27:2767 29:19 31:3256 32:44 34:84 35:203 36:2402 37:4688 38:10118 39:906 40:166 41:4453 42:1914 43:2580 44:377 45:19238 46:5039 47:290 49:1928 50:1900 51:591 52:1556 54:299 55:1085 56:11 57:265 58:2207 59:1284 60:1171 61:2995 62:3004 63:1839 64:5540 65:2202 66:4704 67:3107 68:1125 69:4011 70:1066 71:622 72:2923 74:2816 75:1606 76:613 77:2846 78:1885 79:1754 80:2215 81:2063 82:3190 83:1433 84:1854 85:3411 86:1051 87:2407 88:1298 89:4333 90:785 91:8399 92:2789 93:2900 94:4088 95:4366 96:1450 97:313 98:996 99:643 100:72 101:1403 102:4153 103:32331 104:4828 105:1228 106:983 107:2618 108:1212 109:4124 110:2229 111:3356 112:2049 113:1813 114:1973 115:2245 116:2069 117:2738 118:2824 119:1959 120:1878 121:1367 122:2774 123:2403 124:1585 125:2864 126:91 128:1585 129:1023 130:1304 131:1984 132:789 133:451 134:1536 135:377 136:1313 137:1121 138:3060 139:1614 140:1584 141:1494 142:1928 143:1660 144:1065 145:519 146:2162 147:2113 148:2671 149:2989 150:1252 151:1754 152:2120 153:568 154:8293 155:1640 156:3207 157:1890 158:1291 159:2438 160:3662 161:1913 162:3764 163:2085 164:1731 165:2227 166:1443 167:1907 168:4236 169:800 170:5308 171:1002 172:4493 173:3261 174:904 175:1298 176:3730 177:5448 178:3810 179:2447 180:2630 181:4205 182:3367 183:2026 184:2147 185:21704 186:5473 187:4803 188:4214 189:4419 190:9804 191:1951 192:11250 193:9473 194:7836 195:5621 196:3663 197:3824 198:6114 199:8462 200:8524 201:6400 202:10455 203:10689 204:4533 205:3653 206:4617 207:3458 208:4228 209:5178 210:4598 211:2527 212:4564 213:3826 214:1025 215:48 216:6682 217:3190 218:1351 219:385 220:2083 221:1060 222:709 223:2325 End of report