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 21 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: 1003965 Prefixes after maximum aggregation (per Origin AS): 380168 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 482160 Number of IPv4 prefixes with a valid ROA: 561267 Number of IPv4 prefixes with an invalid ROA: 389 Number of IPv4 prefixes with no ROA: 442309 Total ASes present in the Internet Routing Table: 76858 Prefixes per ASN: 13.06 Origin-only ASes present in the Internet Routing Table: 65969 Origin ASes announcing only one prefix: 26484 Transit ASes present in the Internet Routing Table: 10889 Transit-only ASes present in the Internet Routing Table: 552 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 5.0 Max AS path length visible: 56 Max AS path prepend of ASN (265020) 50 Prefixes from unregistered ASNs in the Routing Table: 1161 Number of instances of unregistered ASNs: 1195 Number of 32-bit ASNs allocated by the RIRs: 46694 Number of 32-bit ASNs visible in the Routing Table: 38396 Prefixes from 32-bit ASNs in the Routing Table: 210792 Number of bogon 32-bit ASNs visible in the Routing Table: 96 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 449 Number of addresses announced to Internet: 3105822208 Equivalent to 185 /8s, 31 /16s and 22 /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: 331679 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 260357 Total APNIC prefixes after maximum aggregation: 77156 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 251692 Unique aggregates announced from the APNIC address blocks: 104452 APNIC Region origin ASes present in the Internet Routing Table: 14604 APNIC Prefixes per ASN: 17.23 APNIC Region origin ASes announcing only one prefix: 4438 APNIC Region transit ASes present in the Internet Routing Table: 1928 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10149 Number of APNIC addresses announced to Internet: 748806144 Equivalent to 44 /8s, 161 /16s and 224 /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: 293477 Total ARIN prefixes after maximum aggregation: 131224 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 295678 Unique aggregates announced from the ARIN address blocks: 139531 ARIN Region origin ASes present in the Internet Routing Table: 19206 ARIN Prefixes per ASN: 15.40 ARIN Region origin ASes announcing only one prefix: 7023 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: 5227 Number of ARIN addresses announced to Internet: 1349670912 Equivalent to 80 /8s, 114 /16s and 88 /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: 277508 Total RIPE prefixes after maximum aggregation: 134606 RIPE Deaggregation factor: 2.06 Prefixes being announced from the RIPE address blocks: 275840 Unique aggregates announced from the RIPE address blocks: 175237 RIPE Region origin ASes present in the Internet Routing Table: 28924 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12041 RIPE Region transit ASes present in the Internet Routing Table: 3948 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: 12511 Number of RIPE addresses announced to Internet: 730948864 Equivalent to 43 /8s, 145 /16s and 101 /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: 133403 Total LACNIC prefixes after maximum aggregation: 29605 LACNIC Deaggregation factor: 4.51 Prefixes being announced from the LACNIC address blocks: 129746 Unique aggregates announced from the LACNIC address blocks: 48925 LACNIC Region origin ASes present in the Internet Routing Table: 11266 LACNIC Prefixes per ASN: 11.52 LACNIC Region origin ASes announcing only one prefix: 2322 LACNIC Region transit ASes present in the Internet Routing Table: 2499 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 56 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9218 Number of LACNIC addresses announced to Internet: 171293696 Equivalent to 10 /8s, 53 /16s and 188 /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: 38059 Total AfriNIC prefixes after maximum aggregation: 6822 AfriNIC Deaggregation factor: 5.58 Prefixes being announced from the AfriNIC address blocks: 50560 Unique aggregates announced from the AfriNIC address blocks: 13614 AfriNIC Region origin ASes present in the Internet Routing Table: 1927 AfriNIC Prefixes per ASN: 26.24 AfriNIC Region origin ASes announcing only one prefix: 660 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: 38 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1291 Number of AfriNIC addresses announced to Internet: 104899328 Equivalent to 6 /8s, 64 /16s and 163 /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 11223 8756 101 CHINAMOBILE-CN China Mobile Communication 7545 6178 846 645 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4387 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4330 534 309 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3698 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3273 1869 101 VNPT-AS-VN VNPT Corp, VN 24560 2891 856 533 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2191 811 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2175 434 193 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 13638 40957 5232 AMAZON-02, US 174 5376 8743 860 COGENT-174, US 11492 4780 317 603 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3633 1320 81 SHAW, CA 22773 3349 3032 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3227 54767 2478 DNIC-AS-00749, US 396982 3192 3854 428 GOOGLE-CLOUD-PLATFORM, US 16625 3085 1296 2253 AKAMAI-AS, US 36352 2819 230 860 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 7674 1713 148 UNI2-AS, ES 39891 4780 291 66 ALJAWWALSTC-AS, SA 20940 4019 3395 126 AKAMAI-ASN1, NL 9009 3899 358 2099 M247, RO 12389 3115 2305 886 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 576 TELLCOM-AS, TR 212238 2312 169 1694 CDNEXT, GB 8452 1616 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 8551 1425 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 12244 3256 574 UNINET, MX 10620 3504 481 1016 Telmex Colombia S.A., CO 13999 2536 537 354 Mega Cable, S.A. de C.V., MX 11830 1987 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, 11664 1208 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1198 371 22 Telefonica del Peru S.A.A., PE 28202 1100 52 9 MASTER SA, BR 22884 1081 69 363 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 1821 644 27 RAYA-AS, EG 24863 1622 389 17 LINKdotNET-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1519 280 ETISALAT-MISR, EG 20011 1296 204 345 INTERNET-SOLUTIONS, ZA 36903 1249 554 96 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1077 523 47 Vodafone-, EG 36914 566 82 3 KENET-AS, KE 3741 563 661 320 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 13638 40957 5232 AMAZON-02, US 8151 12244 3256 574 UNINET, MX 9808 11223 8756 101 CHINAMOBILE-CN China Mobile Communication 12479 7674 1713 148 UNI2-AS, ES 7545 6178 846 645 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5376 8743 860 COGENT-174, US 11492 4780 317 603 CABLEONE, US 39891 4780 291 66 ALJAWWALSTC-AS, SA 18403 4387 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4330 534 309 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 12244 11670 UNINET, MX 9808 11223 11122 CHINAMOBILE-CN China Mobile Communications Grou 12479 7674 7526 UNI2-AS, ES 7545 6178 5533 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 4714 ALJAWWALSTC-AS, SA 174 5376 4516 COGENT-174, US 18403 4387 4362 FPT-AS-AP FPT Telecom Company, VN 11492 4780 4177 CABLEONE, US 9498 4330 4021 BBIL-AP BHARTI Airtel Ltd., IN 20940 4019 3893 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 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 /12:300 /13:584 /14:1214 /15:2171 /16:13911 /17:8315 /18:13695 /19:24738 /20:44595 /21:52561 /22:113428 /23:106859 /24:621431 /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 6596 7674 UNI2-AS, ES 8151 6437 12244 UNINET, MX 11492 3576 4780 CABLEONE, US 39891 3489 4780 ALJAWWALSTC-AS, SA 6327 3430 3633 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2501 3349 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2347 13638 AMAZON-02, US 30036 2247 2587 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2191 3504 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) ---------------------------------------------- 1:2395 2:1467 3:827 4:10 5:5003 6:162 7:6 8:1589 9:1 11:172 12:1347 13:448 14:2527 15:363 16:285 17:376 18:922 20:556 21:4 22:188 23:7632 24:2960 25:2 27:2779 29:19 31:3324 32:43 33:1 34:84 35:254 36:3148 37:4587 38:10536 39:906 40:174 41:4481 42:1950 43:2623 44:386 45:19316 46:5110 47:319 49:1979 50:1887 51:592 52:1565 54:322 55:1082 56:11 57:279 58:2215 59:1250 60:1171 61:3010 62:3021 63:1809 64:5529 65:2189 66:4734 67:3120 68:1119 69:4017 70:1071 71:631 72:2952 74:2824 75:1525 76:622 77:2820 78:1866 79:1719 80:2224 81:2057 82:3176 83:1445 84:1876 85:3371 86:1095 87:2376 88:1326 89:4409 90:771 91:8421 92:2731 93:2936 94:4046 95:4369 96:1485 97:311 98:981 99:687 100:72 101:1410 102:4277 103:32355 104:5162 105:1192 106:1043 107:2663 108:1255 109:4122 110:2223 111:3289 112:2126 113:1834 114:1998 115:2174 116:2104 117:2531 118:2791 119:1911 120:2054 121:1375 122:2813 123:2486 124:1609 125:2869 126:91 128:1607 129:982 130:1319 131:2115 132:782 133:451 134:1562 135:395 136:1357 137:1131 138:3027 139:1577 140:1619 141:1503 142:1932 143:1907 144:1152 145:550 146:2190 147:2115 148:2700 149:2993 150:1266 151:1975 152:2096 153:590 154:7612 155:1772 156:2840 157:1914 158:1330 159:2492 160:3680 161:1900 162:3876 163:2235 164:1853 165:2031 166:1493 167:2001 168:4161 169:800 170:5356 171:1006 172:4471 173:3361 174:920 175:1298 176:3770 177:5570 178:3763 179:2511 180:2669 181:4269 182:3461 183:2053 184:2129 185:21516 186:5574 187:4962 188:4268 189:4537 190:9861 191:1963 192:11314 193:9503 194:7871 195:5605 196:3657 197:3785 198:6123 199:8536 200:8547 201:6505 202:10342 203:10735 204:4563 205:3623 206:4495 207:3476 208:4295 209:5178 210:4645 211:2536 212:4620 213:3803 214:1022 215:48 216:6814 217:3255 218:1371 219:400 220:2079 221:1147 222:720 223:2512 End of report