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 10 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: 1001042 Prefixes after maximum aggregation (per Origin AS): 378136 Deaggregation factor: 2.65 Unique aggregates announced (without unneeded subnets): 479348 Number of IPv4 prefixes with a valid ROA: 556173 Number of IPv4 prefixes with an invalid ROA: 903 Number of IPv4 prefixes with no ROA: 443966 Total ASes present in the Internet Routing Table: 76845 Prefixes per ASN: 13.03 Origin-only ASes present in the Internet Routing Table: 65906 Origin ASes announcing only one prefix: 26597 Transit ASes present in the Internet Routing Table: 10939 Transit-only ASes present in the Internet Routing Table: 543 Paths with bogon ASNs present in the IPv4 Routing Table: 83 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: 998 Number of instances of unregistered ASNs: 999 Number of 32-bit ASNs allocated by the RIRs: 46388 Number of 32-bit ASNs visible in the Routing Table: 38241 Prefixes from 32-bit ASNs in the Routing Table: 208336 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: 467 Number of addresses announced to Internet: 3110065664 Equivalent to 185 /8s, 95 /16s and 214 /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: 330827 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 259382 Total APNIC prefixes after maximum aggregation: 76908 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 250540 Unique aggregates announced from the APNIC address blocks: 103254 APNIC Region origin ASes present in the Internet Routing Table: 14599 APNIC Prefixes per ASN: 17.16 APNIC Region origin ASes announcing only one prefix: 4456 APNIC Region transit ASes present in the Internet Routing Table: 1941 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: 10132 Number of APNIC addresses announced to Internet: 748569856 Equivalent to 44 /8s, 158 /16s and 69 /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: 292852 Total ARIN prefixes after maximum aggregation: 130249 ARIN Deaggregation factor: 2.25 Prefixes being announced from the ARIN address blocks: 294496 Unique aggregates announced from the ARIN address blocks: 138519 ARIN Region origin ASes present in the Internet Routing Table: 19217 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7027 ARIN Region transit ASes present in the Internet Routing Table: 1954 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: 5196 Number of ARIN addresses announced to Internet: 1353149440 Equivalent to 80 /8s, 167 /16s and 108 /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: 277105 Total RIPE prefixes after maximum aggregation: 133974 RIPE Deaggregation factor: 2.07 Prefixes being announced from the RIPE address blocks: 274627 Unique aggregates announced from the RIPE address blocks: 174426 RIPE Region origin ASes present in the Internet Routing Table: 28957 RIPE Prefixes per ASN: 9.48 RIPE Region origin ASes announcing only one prefix: 12051 RIPE Region transit ASes present in the Internet Routing Table: 3974 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 25 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12438 Number of RIPE addresses announced to Internet: 731049216 Equivalent to 43 /8s, 146 /16s and 237 /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: 132716 Total LACNIC prefixes after maximum aggregation: 29507 LACNIC Deaggregation factor: 4.50 Prefixes being announced from the LACNIC address blocks: 128937 Unique aggregates announced from the LACNIC address blocks: 48861 LACNIC Region origin ASes present in the Internet Routing Table: 11241 LACNIC Prefixes per ASN: 11.47 LACNIC Region origin ASes announcing only one prefix: 2400 LACNIC Region transit ASes present in the Internet Routing Table: 2510 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: 9191 Number of LACNIC addresses announced to Internet: 171763456 Equivalent to 10 /8s, 60 /16s and 231 /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: 37989 Total AfriNIC prefixes after maximum aggregation: 6875 AfriNIC Deaggregation factor: 5.53 Prefixes being announced from the AfriNIC address blocks: 51975 Unique aggregates announced from the AfriNIC address blocks: 13904 AfriNIC Region origin ASes present in the Internet Routing Table: 1917 AfriNIC Prefixes per ASN: 27.11 AfriNIC Region origin ASes announcing only one prefix: 663 AfriNIC Region transit ASes present in the Internet Routing Table: 378 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: 1284 Number of AfriNIC addresses announced to Internet: 105310976 Equivalent to 6 /8s, 70 /16s and 235 /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 10795 8755 95 CHINAMOBILE-CN China Mobile Communication 7545 6157 842 650 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4369 534 302 BBIL-AP BHARTI Airtel Ltd., IN 18403 4313 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3907 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3691 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3267 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2867 852 535 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4766 2189 11523 649 KIXS-AS-KR Korea Telecom, KR 45090 2173 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 13320 40836 4800 AMAZON-02, US 174 5309 8750 894 COGENT-174, US 11492 4726 313 592 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3619 1320 81 SHAW, CA 22773 3346 3032 168 ASN-CXA-ALL-CCI-22773-RDC, US 749 3253 54861 2504 DNIC-AS-00749, US 396982 3164 3852 416 GOOGLE-CLOUD-PLATFORM, US 16625 3086 1294 2249 AKAMAI-AS, US 36352 2776 227 851 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 7696 1714 148 UNI2-AS, ES 39891 4797 293 62 ALJAWWALSTC-AS, SA 20940 4015 3395 126 AKAMAI-ASN1, NL 9009 3808 329 1985 M247, RO 12389 3070 2303 886 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2362 360 584 TELLCOM-AS, TR 212238 2144 152 1579 CDNEXT, GB 8452 1647 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 8551 1428 366 39 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 12096 3247 581 UNINET, MX 10620 3505 481 1018 Telmex Colombia S.A., CO 13999 2513 540 362 Mega Cable, S.A. de C.V., MX 11830 1994 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 1207 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1183 371 22 Telefonica del Peru S.A.A., PE 28202 1128 52 9 Rede Brasileira de Comunicacao SA, BR 22884 1056 67 378 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 1744 631 30 RAYA-AS, EG 24863 1651 389 16 LINKdotNET-AS, EG 29571 1595 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1518 283 ETISALAT-MISR, EG 20011 1295 204 345 INTERNET-SOLUTIONS, ZA 36903 1249 554 96 MT-MPLS, MA 36935 1036 523 45 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 13320 40836 4800 AMAZON-02, US 8151 12096 3247 581 UNINET, MX 9808 10795 8755 95 CHINAMOBILE-CN China Mobile Communication 12479 7696 1714 148 UNI2-AS, ES 7545 6157 842 650 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5309 8750 894 COGENT-174, US 39891 4797 293 62 ALJAWWALSTC-AS, SA 11492 4726 313 592 CABLEONE, US 9498 4369 534 302 BBIL-AP BHARTI Airtel Ltd., IN 18403 4313 347 25 FPT-AS-AP FPT Telecom Company, 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 8151 12096 11515 UNINET, MX 9808 10795 10700 CHINAMOBILE-CN China Mobile Communications Grou 12479 7696 7548 UNI2-AS, ES 7545 6157 5507 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 4735 ALJAWWALSTC-AS, SA 174 5309 4415 COGENT-174, US 18403 4313 4288 FPT-AS-AP FPT Telecom Company, VN 11492 4726 4134 CABLEONE, US 9498 4369 4067 BBIL-AP BHARTI Airtel Ltd., IN 20940 4015 3889 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 23.152.48.0/24 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 /13:582 /14:1228 /15:2187 /16:14053 /17:8339 /18:13888 /19:24793 /20:44314 /21:52536 /22:113364 /23:105968 /24:619324 /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 6617 7696 UNI2-AS, ES 8151 6272 12096 UNINET, MX 11492 3533 4726 CABLEONE, US 39891 3489 4797 ALJAWWALSTC-AS, SA 6327 3416 3619 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2496 3346 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2321 13320 AMAZON-02, US 30036 2219 2559 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2191 3505 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) ---------------------------------------------- 1:2342 2:1519 3:703 4:11 5:4977 6:162 7:6 8:1605 9:1 11:172 12:1365 13:383 14:2517 15:353 16:285 17:372 18:920 20:525 21:4 22:188 23:7539 24:2893 25:2 27:2771 29:19 31:3291 32:45 33:1 34:84 35:205 36:2761 37:4659 38:10330 39:909 40:171 41:4459 42:1969 43:2600 44:375 45:19323 46:5066 47:294 49:1941 50:1899 51:591 52:1555 54:304 55:1094 56:11 57:267 58:2214 59:1368 60:1164 61:2998 62:3013 63:1823 64:5521 65:2188 66:4740 67:3111 68:1134 69:4007 70:1088 71:639 72:2941 74:2806 75:1624 76:617 77:2835 78:1879 79:1763 80:2219 81:2070 82:3158 83:1442 84:1855 85:3441 86:1050 87:2412 88:1302 89:4370 90:775 91:8424 92:2721 93:2901 94:4044 95:4347 96:1476 97:316 98:980 99:677 100:72 101:1409 102:4323 103:32386 104:5007 105:1242 106:1032 107:2622 108:1224 109:4124 110:2234 111:3366 112:2061 113:1802 114:1978 115:2245 116:2085 117:2614 118:2812 119:1959 120:1895 121:1367 122:2779 123:2409 124:1588 125:2852 126:91 128:1595 129:1016 130:1322 131:2021 132:781 133:451 134:1543 135:377 136:1313 137:1130 138:3067 139:1634 140:1588 141:1506 142:1925 143:1731 144:1106 145:509 146:2167 147:2095 148:2623 149:2925 150:1256 151:1852 152:2101 153:563 154:8420 155:1707 156:3372 157:1894 158:1304 159:2442 160:3653 161:1898 162:3745 163:2164 164:1722 165:2229 166:1473 167:1927 168:4228 169:800 170:5325 171:1007 172:4419 173:3292 174:909 175:1300 176:3731 177:5487 178:3689 179:2461 180:2653 181:4207 182:3425 183:2059 184:2118 185:21744 186:5533 187:4818 188:4238 189:4474 190:9857 191:1934 192:11247 193:9522 194:7842 195:5629 196:3661 197:3839 198:6121 199:8504 200:8551 201:6461 202:10364 203:10699 204:4530 205:3601 206:4496 207:3465 208:4289 209:5219 210:4653 211:2539 212:4570 213:3760 214:1031 215:48 216:6776 217:3199 218:1358 219:386 220:2082 221:1080 222:714 223:2364 End of report