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 06 Sep, 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: 1024534 Prefixes after maximum aggregation (per Origin AS): 388573 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 492139 Number of IPv4 prefixes with a valid ROA: 584140 Number of IPv4 prefixes with an invalid ROA: 2541 Number of IPv4 prefixes with no ROA: 437853 Total ASes present in the Internet Routing Table: 77412 Prefixes per ASN: 13.23 Origin-only ASes present in the Internet Routing Table: 66386 Origin ASes announcing only one prefix: 26620 Transit ASes present in the Internet Routing Table: 11026 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 134 Average AS path length visible in the Internet Routing Table: 5.0 Max AS path length visible: 93 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1149 Number of instances of unregistered ASNs: 1188 Number of 32-bit ASNs allocated by the RIRs: 47334 Number of 32-bit ASNs visible in the Routing Table: 39002 Prefixes from 32-bit ASNs in the Routing Table: 217184 Number of bogon 32-bit ASNs visible in the Routing Table: 112 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 457 Number of addresses announced to Internet: 3108662272 Equivalent to 185 /8s, 74 /16s and 108 /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: 337836 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270022 Total APNIC prefixes after maximum aggregation: 79098 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 260190 Unique aggregates announced from the APNIC address blocks: 105342 APNIC Region origin ASes present in the Internet Routing Table: 14791 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4487 APNIC Region transit ASes present in the Internet Routing Table: 1971 Average APNIC Region AS path length visible: 5.4 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10352 Number of APNIC addresses announced to Internet: 750547456 Equivalent to 44 /8s, 188 /16s and 114 /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: 297141 Total ARIN prefixes after maximum aggregation: 133392 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 299337 Unique aggregates announced from the ARIN address blocks: 142268 ARIN Region origin ASes present in the Internet Routing Table: 19292 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7052 ARIN Region transit ASes present in the Internet Routing Table: 1960 Average ARIN Region AS path length visible: 4.8 Max ARIN Region AS path length visible: 31 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5320 Number of ARIN addresses announced to Internet: 1349531904 Equivalent to 80 /8s, 112 /16s and 57 /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: 285161 Total RIPE prefixes after maximum aggregation: 138097 RIPE Deaggregation factor: 2.06 Prefixes being announced from the RIPE address blocks: 283919 Unique aggregates announced from the RIPE address blocks: 179494 RIPE Region origin ASes present in the Internet Routing Table: 29127 RIPE Prefixes per ASN: 9.75 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 3996 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 24 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12730 Number of RIPE addresses announced to Internet: 732660992 Equivalent to 43 /8s, 171 /16s and 133 /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: 132863 Total LACNIC prefixes after maximum aggregation: 30247 LACNIC Deaggregation factor: 4.39 Prefixes being announced from the LACNIC address blocks: 128889 Unique aggregates announced from the LACNIC address blocks: 49351 LACNIC Region origin ASes present in the Internet Routing Table: 11299 LACNIC Prefixes per ASN: 11.41 LACNIC Region origin ASes announcing only one prefix: 2329 LACNIC Region transit ASes present in the Internet Routing Table: 2529 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 93 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9262 Number of LACNIC addresses announced to Internet: 170781952 Equivalent to 10 /8s, 45 /16s and 237 /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: 38198 Total AfriNIC prefixes after maximum aggregation: 6987 AfriNIC Deaggregation factor: 5.47 Prefixes being announced from the AfriNIC address blocks: 51742 Unique aggregates announced from the AfriNIC address blocks: 15286 AfriNIC Region origin ASes present in the Internet Routing Table: 1974 AfriNIC Prefixes per ASN: 26.21 AfriNIC Region origin ASes announcing only one prefix: 661 AfriNIC Region transit ASes present in the Internet Routing Table: 390 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1338 Number of AfriNIC addresses announced to Internet: 104892416 Equivalent to 6 /8s, 64 /16s and 136 /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 12920 8759 111 CHINAMOBILE-CN China Mobile Communication 7545 6135 838 613 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4471 536 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4406 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3932 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3675 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3317 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2975 811 177 CMNET-JIANGSU-AP China Mobile communicati 24560 2919 862 508 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 45090 2182 1517 77 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 14391 40867 5379 AMAZON-02, US 174 4973 8760 845 COGENT-174, US 11492 4732 314 822 CABLEONE, US 7155 3875 287 91 VIASAT-SP-BACKBONE, US 6327 3657 1320 82 SHAW, CA 22773 3332 3024 151 ASN-CXA-ALL-CCI-22773-RDC, US 396982 3224 3859 442 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 16625 3061 1300 2213 AKAMAI-AS, US 4155 2985 232 1742 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 7496 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4038 3395 128 AKAMAI-ASN1, NL 9009 3897 367 2195 M247, RO 12389 3125 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 5384 2628 585 29 EMIRATES-INTERNET Emirates Internet, AE 34984 2413 361 586 TELLCOM-AS, TR 212238 2412 172 1747 CDNEXT, GB 203020 1889 226 869 HOSTROYALE, IN 8452 1611 1852 14 TE-AS TE-AS, EG 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 12384 3277 574 UNINET, MX 10620 3487 473 1049 Telmex Colombia S.A., CO 13999 2539 511 347 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1372 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1216 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 22 Telefonica del Peru S.A.A., PE 22884 1061 70 374 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1012 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 1824 652 28 RAYA-AS, EG 36992 1429 1495 377 ETISALAT-MISR, EG 29571 1371 102 38 ORANGE-COTE-IVOIRE, CI 20011 1319 204 345 INTERNET-SOLUTIONS, ZA 36903 1250 554 97 MT-MPLS, MA 24863 1244 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1066 523 46 Vodafone-, EG 36914 572 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 14391 40867 5379 AMAZON-02, US 9808 12920 8759 111 CHINAMOBILE-CN China Mobile Communication 8151 12384 3277 574 UNINET, MX 12479 7496 1711 150 UNI2-AS, ES 7545 6135 838 613 TPG-INTERNET-AP TPG Telecom Limited, AU 174 4973 8760 845 COGENT-174, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4732 314 822 CABLEONE, US 9498 4471 536 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4406 347 26 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 9808 12920 12809 CHINAMOBILE-CN China Mobile Communications Grou 8151 12384 11810 UNINET, MX 12479 7496 7346 UNI2-AS, ES 7545 6135 5522 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4406 4380 FPT-AS-AP FPT Telecom Company, VN 9498 4471 4157 BBIL-AP BHARTI Airtel Ltd., IN 174 4973 4128 COGENT-174, US 11492 4732 3910 CABLEONE, US 20940 4038 3910 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 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, 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 1782 UNALLOCATED 8.42.19.0/24 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: 21859 ZEN-ECN, 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 23.145.20.0/24 Origin: 63023 AS-GLOBALTELEHOST, US 23.145.20.0/24 Transit: 6461 ZAYO-6461, 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 /12:299 /13:580 /14:1215 /15:2174 /16:13852 /17:8350 /18:13746 /19:24872 /20:45345 /21:53080 /22:114428 /23:109008 /24:637422 /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 8151 6553 12384 UNINET, MX 12479 6451 7496 UNI2-AS, ES 11492 3548 4732 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3455 3657 SHAW, CA 7155 2833 3875 VIASAT-SP-BACKBONE, US 22773 2510 3332 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2425 14391 AMAZON-02, US 30036 2326 2669 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2207 3487 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) ---------------------------------------------- 1:2444 2:1662 3:934 4:10 5:5195 6:156 7:6 8:1563 9:4 11:172 12:1254 13:563 14:2623 15:397 16:302 17:391 18:908 20:587 21:4 22:188 23:7907 24:2805 25:2 27:2862 29:19 31:3501 32:37 33:1 34:88 35:274 36:4300 37:4593 38:10521 39:1005 40:265 41:4522 42:1946 43:2777 44:386 45:19763 46:5224 47:346 49:2037 50:2063 51:592 52:1610 54:362 55:1107 56:11 57:292 58:2254 59:1329 60:1189 61:3094 62:3085 63:1797 64:5685 65:2159 66:4937 67:3156 68:1101 69:4051 70:1047 71:640 72:2988 74:2860 75:1525 76:604 77:2902 78:1934 79:1757 80:2263 81:2118 82:3326 83:1508 84:1970 85:3515 86:1198 87:2384 88:1370 89:4517 90:804 91:8510 92:2845 93:2984 94:4278 95:4481 96:1503 97:311 98:951 99:736 100:71 101:1469 102:4684 103:32785 104:5314 105:1077 106:876 107:2656 108:1236 109:4253 110:2234 111:3588 112:2479 113:1883 114:1991 115:2326 116:2137 117:2703 118:3058 119:1953 120:2215 121:1360 122:2844 123:2498 124:1751 125:2903 126:90 128:1599 129:1008 130:1324 131:2243 132:793 133:460 134:1609 135:413 136:1498 137:1139 138:3016 139:1593 140:1633 141:1555 142:1942 143:2060 144:1234 145:625 146:2196 147:2133 148:2730 149:2971 150:1266 151:2403 152:2135 153:629 154:7735 155:1983 156:3306 157:1985 158:1421 159:2562 160:3679 161:1998 162:3927 163:2324 164:1948 165:2586 166:1565 167:2093 168:4042 169:793 170:5501 171:1001 172:4283 173:3439 174:907 175:1365 176:3895 177:5359 178:4181 179:2505 180:2627 181:4345 182:3665 183:2366 184:2110 185:21907 186:5691 187:4882 188:4325 189:4531 190:9991 191:1636 192:11435 193:9545 194:7949 195:5681 196:3697 197:4038 198:6147 199:8697 200:8555 201:6512 202:10625 203:10864 204:4576 205:3637 206:4575 207:3542 208:4320 209:5219 210:4805 211:2678 212:4719 213:3914 214:1038 215:51 216:6920 217:3461 218:1473 219:422 220:2159 221:1211 222:748 223:2862 End of report