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 05 Jul, 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: 1006335 Prefixes after maximum aggregation (per Origin AS): 382073 Deaggregation factor: 2.63 Unique aggregates announced (without unneeded subnets): 485612 Number of IPv4 prefixes with a valid ROA: 565550 Number of IPv4 prefixes with an invalid ROA: 443 Number of IPv4 prefixes with no ROA: 440342 Total ASes present in the Internet Routing Table: 76963 Prefixes per ASN: 13.08 Origin-only ASes present in the Internet Routing Table: 65912 Origin ASes announcing only one prefix: 26531 Transit ASes present in the Internet Routing Table: 11051 Transit-only ASes present in the Internet Routing Table: 555 Paths with bogon ASNs present in the IPv4 Routing Table: 43 Average AS path length visible in the Internet Routing Table: 5.1 Max AS path length visible: 79 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1150 Number of instances of unregistered ASNs: 1197 Number of 32-bit ASNs allocated by the RIRs: 46774 Number of 32-bit ASNs visible in the Routing Table: 38507 Prefixes from 32-bit ASNs in the Routing Table: 211624 Number of bogon 32-bit ASNs visible in the Routing Table: 120 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 451 Number of addresses announced to Internet: 3106102784 Equivalent to 185 /8s, 35 /16s and 94 /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: 331515 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 261893 Total APNIC prefixes after maximum aggregation: 77326 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 252747 Unique aggregates announced from the APNIC address blocks: 104589 APNIC Region origin ASes present in the Internet Routing Table: 14651 APNIC Prefixes per ASN: 17.25 APNIC Region origin ASes announcing only one prefix: 4464 APNIC Region transit ASes present in the Internet Routing Table: 1951 Average APNIC Region AS path length visible: 5.4 Max APNIC Region AS path length visible: 79 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10199 Number of APNIC addresses announced to Internet: 749003520 Equivalent to 44 /8s, 164 /16s and 227 /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: 293894 Total ARIN prefixes after maximum aggregation: 131704 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 295683 Unique aggregates announced from the ARIN address blocks: 140501 ARIN Region origin ASes present in the Internet Routing Table: 19212 ARIN Prefixes per ASN: 15.39 ARIN Region origin ASes announcing only one prefix: 7029 ARIN Region transit ASes present in the Internet Routing Table: 1975 Average ARIN Region AS path length visible: 4.8 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5236 Number of ARIN addresses announced to Internet: 1349063168 Equivalent to 80 /8s, 105 /16s and 18 /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: 279186 Total RIPE prefixes after maximum aggregation: 135745 RIPE Deaggregation factor: 2.06 Prefixes being announced from the RIPE address blocks: 277813 Unique aggregates announced from the RIPE address blocks: 177131 RIPE Region origin ASes present in the Internet Routing Table: 28965 RIPE Prefixes per ASN: 9.59 RIPE Region origin ASes announcing only one prefix: 12025 RIPE Region transit ASes present in the Internet Routing Table: 3984 Average RIPE Region AS path length visible: 4.8 Max RIPE Region AS path length visible: 33 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12546 Number of RIPE addresses announced to Internet: 731433472 Equivalent to 43 /8s, 152 /16s and 202 /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: 132290 Total LACNIC prefixes after maximum aggregation: 29713 LACNIC Deaggregation factor: 4.45 Prefixes being announced from the LACNIC address blocks: 128550 Unique aggregates announced from the LACNIC address blocks: 49030 LACNIC Region origin ASes present in the Internet Routing Table: 11279 LACNIC Prefixes per ASN: 11.40 LACNIC Region origin ASes announcing only one prefix: 2340 LACNIC Region transit ASes present in the Internet Routing Table: 2561 Average LACNIC Region AS path length visible: 5.7 Max LACNIC Region AS path length visible: 56 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9235 Number of LACNIC addresses announced to Internet: 171188224 Equivalent to 10 /8s, 52 /16s and 32 /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: 37922 Total AfriNIC prefixes after maximum aggregation: 6848 AfriNIC Deaggregation factor: 5.54 Prefixes being announced from the AfriNIC address blocks: 51091 Unique aggregates announced from the AfriNIC address blocks: 13958 AfriNIC Region origin ASes present in the Internet Routing Table: 1927 AfriNIC Prefixes per ASN: 26.51 AfriNIC Region origin ASes announcing only one prefix: 673 AfriNIC Region transit ASes present in the Internet Routing Table: 386 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 78 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1291 Number of AfriNIC addresses announced to Internet: 105162752 Equivalent to 6 /8s, 68 /16s and 168 /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 11561 8759 112 CHINAMOBILE-CN China Mobile Communication 7545 6143 839 619 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4373 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4352 535 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3921 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3700 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3287 1869 101 VNPT-AS-VN VNPT Corp, VN 24560 2899 862 526 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2425 811 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2180 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 13592 40951 5236 AMAZON-02, US 174 5299 8767 861 COGENT-174, US 11492 4781 317 604 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3635 1320 82 SHAW, CA 22773 3337 3032 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3226 54767 2477 DNIC-AS-00749, US 396982 3193 3854 430 GOOGLE-CLOUD-PLATFORM, US 16625 3065 1289 2244 AKAMAI-AS, US 4155 2836 215 1725 USDA-1, 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 7655 1713 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4032 3395 126 AKAMAI-ASN1, NL 9009 3777 351 2103 M247, RO 12389 3119 2305 883 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2361 170 1729 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1568 1852 14 TE-AS TE-AS, EG 8551 1431 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 12308 3259 573 UNINET, MX 10620 3508 481 1019 Telmex Colombia S.A., CO 13999 2538 538 356 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1368 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1344 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1195 371 22 Telefonica del Peru S.A.A., PE 11664 1188 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1065 68 372 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1021 2487 55 TIM SA, BR 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 1823 660 28 RAYA-AS, EG 24863 1621 389 17 LINKdotNET-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1429 1519 280 ETISALAT-MISR, EG 20011 1296 204 345 INTERNET-SOLUTIONS, ZA 36903 1249 554 96 MT-MPLS, MA 37069 1075 1100 18 MOBINIL, EG 36935 1061 520 44 Vodafone-, EG 36914 578 82 3 KENET-AS, KE 3741 564 725 321 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 13592 40951 5236 AMAZON-02, US 8151 12308 3259 573 UNINET, MX 9808 11561 8759 112 CHINAMOBILE-CN China Mobile Communication 12479 7655 1713 148 UNI2-AS, ES 7545 6143 839 619 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5299 8767 861 COGENT-174, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4781 317 604 CABLEONE, US 18403 4373 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4352 535 312 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 12308 11735 UNINET, MX 9808 11561 11449 CHINAMOBILE-CN China Mobile Communications Grou 12479 7655 7507 UNI2-AS, ES 7545 6143 5524 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 174 5299 4438 COGENT-174, US 18403 4373 4348 FPT-AS-AP FPT Telecom Company, VN 11492 4781 4177 CABLEONE, US 9498 4352 4040 BBIL-AP BHARTI Airtel Ltd., IN 20940 4032 3906 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 46887 CROWNCASTLE-AS46887, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, 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 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /12:298 /13:585 /14:1215 /15:2173 /16:13853 /17:8295 /18:13680 /19:24713 /20:44600 /21:52631 /22:113386 /23:106793 /24:623950 /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 6578 7655 UNI2-AS, ES 8151 6492 12308 UNINET, MX 11492 3577 4781 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3432 3635 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2491 3337 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2345 13592 AMAZON-02, US 30036 2263 2604 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3508 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) ---------------------------------------------- 1:2401 2:1537 3:827 4:10 5:5016 6:162 7:6 8:1592 9:1 11:172 12:1345 13:450 14:2546 15:364 16:285 17:383 18:894 20:562 21:4 22:188 23:7725 24:2814 25:2 27:2789 29:19 31:3350 32:43 33:1 34:84 35:255 36:3270 37:4586 38:10576 39:907 40:232 41:4510 42:1893 43:2669 44:379 45:19379 46:5143 47:326 49:1853 50:1897 51:593 52:1555 54:321 55:1103 56:11 57:281 58:2186 59:1286 60:1173 61:3010 62:3015 63:1808 64:5571 65:2193 66:4785 67:3129 68:1098 69:4032 70:1054 71:626 72:2947 74:2813 75:1524 76:606 77:2870 78:1896 79:1733 80:2216 81:2096 82:3182 83:1448 84:1879 85:3463 86:1084 87:2394 88:1331 89:4409 90:777 91:8476 92:2756 93:2946 94:4043 95:4402 96:1502 97:311 98:958 99:692 100:72 101:1410 102:4182 103:32346 104:5230 105:1190 106:976 107:2639 108:1271 109:4187 110:2234 111:3229 112:2184 113:1862 114:1970 115:2217 116:2105 117:2551 118:2911 119:1917 120:2103 121:1325 122:2816 123:2569 124:1634 125:2877 126:91 128:1607 129:984 130:1316 131:2120 132:781 133:450 134:1573 135:395 136:1390 137:1134 138:2987 139:1580 140:1632 141:1508 142:1922 143:1990 144:1156 145:562 146:2183 147:2104 148:2717 149:2993 150:1268 151:2187 152:2102 153:590 154:7987 155:1792 156:3174 157:1927 158:1345 159:2503 160:3688 161:1903 162:3882 163:2237 164:1891 165:2073 166:1507 167:2029 168:4156 169:788 170:5372 171:1005 172:4450 173:3385 174:920 175:1314 176:3769 177:5368 178:3991 179:2470 180:2630 181:4250 182:3488 183:2189 184:2127 185:21815 186:5543 187:4885 188:4285 189:4538 190:9853 191:1586 192:11301 193:9524 194:7844 195:5649 196:3670 197:3796 198:6114 199:8568 200:8535 201:6502 202:10431 203:10720 204:4582 205:3635 206:4488 207:3517 208:4279 209:5158 210:4651 211:2552 212:4616 213:3839 214:1012 215:46 216:6819 217:3271 218:1378 219:402 220:2137 221:1153 222:709 223:2577 End of report