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 24 May, 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: 1002661 Prefixes after maximum aggregation (per Origin AS): 379118 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 481491 Number of IPv4 prefixes with a valid ROA: 558718 Number of IPv4 prefixes with an invalid ROA: 511 Number of IPv4 prefixes with no ROA: 443432 Total ASes present in the Internet Routing Table: 76838 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 65967 Origin ASes announcing only one prefix: 26562 Transit ASes present in the Internet Routing Table: 10871 Transit-only ASes present in the Internet Routing Table: 542 Paths with bogon ASNs present in the IPv4 Routing Table: 84 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: 1009 Number of instances of unregistered ASNs: 1010 Number of 32-bit ASNs allocated by the RIRs: 46510 Number of 32-bit ASNs visible in the Routing Table: 38272 Prefixes from 32-bit ASNs in the Routing Table: 209459 Number of bogon 32-bit ASNs visible in the Routing Table: 21 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 457 Number of addresses announced to Internet: 3110097152 Equivalent to 185 /8s, 96 /16s and 81 /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: 330739 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 259547 Total APNIC prefixes after maximum aggregation: 77103 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 250610 Unique aggregates announced from the APNIC address blocks: 104245 APNIC Region origin ASes present in the Internet Routing Table: 14575 APNIC Prefixes per ASN: 17.19 APNIC Region origin ASes announcing only one prefix: 4438 APNIC Region transit ASes present in the Internet Routing Table: 1920 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: 10111 Number of APNIC addresses announced to Internet: 748691712 Equivalent to 44 /8s, 160 /16s and 33 /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: 294259 Total ARIN prefixes after maximum aggregation: 130991 ARIN Deaggregation factor: 2.25 Prefixes being announced from the ARIN address blocks: 295010 Unique aggregates announced from the ARIN address blocks: 139324 ARIN Region origin ASes present in the Internet Routing Table: 19223 ARIN Prefixes per ASN: 15.35 ARIN Region origin ASes announcing only one prefix: 7051 ARIN Region transit ASes present in the Internet Routing Table: 1952 Average ARIN Region AS path length visible: 4.7 Max ARIN Region AS path length visible: 25 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5215 Number of ARIN addresses announced to Internet: 1352601600 Equivalent to 80 /8s, 159 /16s and 16 /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: 277030 Total RIPE prefixes after maximum aggregation: 134129 RIPE Deaggregation factor: 2.07 Prefixes being announced from the RIPE address blocks: 275195 Unique aggregates announced from the RIPE address blocks: 174987 RIPE Region origin ASes present in the Internet Routing Table: 28963 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12064 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: 28 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12470 Number of RIPE addresses announced to Internet: 731511296 Equivalent to 43 /8s, 153 /16s and 250 /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: 132754 Total LACNIC prefixes after maximum aggregation: 29482 LACNIC Deaggregation factor: 4.50 Prefixes being announced from the LACNIC address blocks: 128978 Unique aggregates announced from the LACNIC address blocks: 48853 LACNIC Region origin ASes present in the Internet Routing Table: 11243 LACNIC Prefixes per ASN: 11.47 LACNIC Region origin ASes announcing only one prefix: 2353 LACNIC Region transit ASes present in the Internet Routing Table: 2509 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: 9193 Number of LACNIC addresses announced to Internet: 171858688 Equivalent to 10 /8s, 62 /16s and 91 /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: 38062 Total AfriNIC prefixes after maximum aggregation: 6784 AfriNIC Deaggregation factor: 5.61 Prefixes being announced from the AfriNIC address blocks: 52411 Unique aggregates announced from the AfriNIC address blocks: 13675 AfriNIC Region origin ASes present in the Internet Routing Table: 1915 AfriNIC Prefixes per ASN: 27.37 AfriNIC Region origin ASes announcing only one prefix: 656 AfriNIC Region transit ASes present in the Internet Routing Table: 381 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: 1283 Number of AfriNIC addresses announced to Internet: 105221632 Equivalent to 6 /8s, 69 /16s and 142 /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 11029 8755 95 CHINAMOBILE-CN China Mobile Communication 7545 6174 844 646 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4400 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4288 534 301 BBIL-AP BHARTI Airtel Ltd., IN 7552 3903 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3696 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3274 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2868 853 535 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 45090 2173 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 4755 2165 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 13485 40824 5111 AMAZON-02, US 174 5276 8746 879 COGENT-174, US 11492 4734 314 586 CABLEONE, US 7155 3864 286 85 VIASAT-SP-BACKBONE, US 6327 3620 1320 81 SHAW, CA 22773 3348 3032 168 ASN-CXA-ALL-CCI-22773-RDC, US 749 3230 54783 2481 DNIC-AS-00749, US 396982 3169 3852 418 GOOGLE-CLOUD-PLATFORM, US 16625 3100 1294 2252 AKAMAI-AS, US 36352 2830 231 859 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 7713 1714 148 UNI2-AS, ES 39891 4797 293 62 ALJAWWALSTC-AS, SA 20940 4022 3395 126 AKAMAI-ASN1, NL 9009 3859 337 2054 M247, RO 12389 3071 2305 887 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2391 360 581 TELLCOM-AS, TR 212238 2154 152 1583 CDNEXT, GB 8452 1611 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 62240 1423 94 738 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 12195 3253 582 UNINET, MX 10620 3500 480 1017 Telmex Colombia S.A., CO 13999 2511 540 365 Mega Cable, S.A. de C.V., MX 11830 1980 369 64 Instituto Costarricense de Electricidad y 28573 1358 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1338 785 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1205 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1197 371 22 Telefonica del Peru S.A.A., PE 28202 1125 52 9 Rede Brasileira de Comunicacao SA, BR 22884 1063 68 379 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 1780 644 27 RAYA-AS, EG 24863 1654 389 17 LINKdotNET-AS, EG 29571 1608 102 33 ORANGE-COTE-IVOIRE, CI 36992 1432 1519 280 ETISALAT-MISR, EG 20011 1295 204 345 INTERNET-SOLUTIONS, ZA 36903 1250 554 97 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1046 523 46 Vodafone-, 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 13485 40824 5111 AMAZON-02, US 8151 12195 3253 582 UNINET, MX 9808 11029 8755 95 CHINAMOBILE-CN China Mobile Communication 12479 7713 1714 148 UNI2-AS, ES 7545 6174 844 646 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5276 8746 879 COGENT-174, US 39891 4797 293 62 ALJAWWALSTC-AS, SA 11492 4734 314 586 CABLEONE, US 18403 4400 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4288 534 301 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 12195 11613 UNINET, MX 9808 11029 10934 CHINAMOBILE-CN China Mobile Communications Grou 12479 7713 7565 UNI2-AS, ES 7545 6174 5528 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 4735 ALJAWWALSTC-AS, SA 174 5276 4397 COGENT-174, US 18403 4400 4375 FPT-AS-AP FPT Telecom Company, VN 11492 4734 4148 CABLEONE, US 9498 4288 3987 BBIL-AP BHARTI Airtel Ltd., IN 20940 4022 3896 AKAMAI-ASN1, NL 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /11:92 /12:299 /13:583 /14:1227 /15:2185 /16:13965 /17:8341 /18:13850 /19:24812 /20:44553 /21:52489 /22:113358 /23:106398 /24:620436 /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 6629 7713 UNI2-AS, ES 8151 6365 12195 UNINET, MX 11492 3531 4734 CABLEONE, US 39891 3489 4797 ALJAWWALSTC-AS, SA 6327 3417 3620 SHAW, CA 7155 2823 3864 VIASAT-SP-BACKBONE, US 22773 2497 3348 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2328 13485 AMAZON-02, US 30036 2231 2572 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2186 3500 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) ---------------------------------------------- 1:2381 2:1517 3:782 4:9 5:5008 6:163 7:6 8:1600 9:1 11:172 12:1362 13:431 14:2522 15:354 16:285 17:376 18:920 20:535 21:4 22:188 23:7567 24:2891 25:2 27:2781 29:19 31:3299 32:44 33:1 34:84 35:207 36:2957 37:4644 38:10329 39:907 40:169 41:4465 42:1966 43:2600 44:386 45:19355 46:5082 47:301 49:1944 50:1889 51:591 52:1564 54:320 55:1097 56:11 57:270 58:2218 59:1285 60:1168 61:3010 62:3014 63:1816 64:5517 65:2196 66:4724 67:3110 68:1138 69:4007 70:1084 71:634 72:2934 74:2800 75:1529 76:617 77:2806 78:1898 79:1539 80:2211 81:2104 82:3134 83:1447 84:1869 85:3420 86:1067 87:2392 88:1308 89:4402 90:776 91:8440 92:2711 93:2904 94:4066 95:4336 96:1473 97:316 98:977 99:686 100:71 101:1429 102:4299 103:32310 104:5058 105:1236 106:1033 107:2649 108:1222 109:4066 110:2241 111:3295 112:2100 113:1814 114:1979 115:2214 116:2082 117:2532 118:2801 119:1920 120:1952 121:1375 122:2790 123:2416 124:1598 125:2862 126:91 128:1619 129:1021 130:1333 131:2041 132:777 133:451 134:1542 135:379 136:1348 137:1132 138:3091 139:1584 140:1594 141:1502 142:1914 143:1789 144:1102 145:508 146:2196 147:2110 148:2705 149:2956 150:1223 151:1946 152:2105 153:564 154:8298 155:2001 156:3221 157:1908 158:1325 159:2442 160:3909 161:1885 162:3770 163:2182 164:1757 165:2235 166:1478 167:1914 168:4491 169:801 170:5330 171:1007 172:4380 173:3320 174:915 175:1295 176:3762 177:5451 178:3712 179:2493 180:2663 181:4237 182:3442 183:2112 184:2115 185:21767 186:5500 187:4860 188:4276 189:4493 190:9822 191:1907 192:11268 193:9505 194:7855 195:5641 196:3630 197:3797 198:6128 199:8523 200:8520 201:6448 202:10363 203:10692 204:4534 205:3609 206:4472 207:3468 208:4280 209:5185 210:4625 211:2528 212:4587 213:3784 214:1024 215:48 216:6789 217:3207 218:1363 219:390 220:2086 221:1096 222:718 223:2389 End of report