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 28 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: 1006608 Prefixes after maximum aggregation (per Origin AS): 381788 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 484312 Number of IPv4 prefixes with a valid ROA: 564366 Number of IPv4 prefixes with an invalid ROA: 494 Number of IPv4 prefixes with no ROA: 441748 Total ASes present in the Internet Routing Table: 76959 Prefixes per ASN: 13.08 Origin-only ASes present in the Internet Routing Table: 66043 Origin ASes announcing only one prefix: 26533 Transit ASes present in the Internet Routing Table: 10916 Transit-only ASes present in the Internet Routing Table: 551 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: 79 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1146 Number of instances of unregistered ASNs: 1179 Number of 32-bit ASNs allocated by the RIRs: 46681 Number of 32-bit ASNs visible in the Routing Table: 38479 Prefixes from 32-bit ASNs in the Routing Table: 211746 Number of bogon 32-bit ASNs visible in the Routing Table: 92 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 450 Number of addresses announced to Internet: 3106149888 Equivalent to 185 /8s, 36 /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: 331521 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262118 Total APNIC prefixes after maximum aggregation: 77578 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 252737 Unique aggregates announced from the APNIC address blocks: 104507 APNIC Region origin ASes present in the Internet Routing Table: 14634 APNIC Prefixes per ASN: 17.27 APNIC Region origin ASes announcing only one prefix: 4446 APNIC Region transit ASes present in the Internet Routing Table: 1931 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 79 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10180 Number of APNIC addresses announced to Internet: 748894464 Equivalent to 44 /8s, 163 /16s and 57 /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: 293630 Total ARIN prefixes after maximum aggregation: 131390 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 295553 Unique aggregates announced from the ARIN address blocks: 139792 ARIN Region origin ASes present in the Internet Routing Table: 19210 ARIN Prefixes per ASN: 15.39 ARIN Region origin ASes announcing only one prefix: 7031 ARIN Region transit ASes present in the Internet Routing Table: 1956 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: 5236 Number of ARIN addresses announced to Internet: 1349340416 Equivalent to 80 /8s, 109 /16s and 77 /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: 279394 Total RIPE prefixes after maximum aggregation: 135595 RIPE Deaggregation factor: 2.06 Prefixes being announced from the RIPE address blocks: 277753 Unique aggregates announced from the RIPE address blocks: 176816 RIPE Region origin ASes present in the Internet Routing Table: 28986 RIPE Prefixes per ASN: 9.58 RIPE Region origin ASes announcing only one prefix: 12052 RIPE Region transit ASes present in the Internet Routing Table: 3964 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: 12546 Number of RIPE addresses announced to Internet: 731266560 Equivalent to 43 /8s, 150 /16s and 62 /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: 132379 Total LACNIC prefixes after maximum aggregation: 29664 LACNIC Deaggregation factor: 4.46 Prefixes being announced from the LACNIC address blocks: 128679 Unique aggregates announced from the LACNIC address blocks: 48989 LACNIC Region origin ASes present in the Internet Routing Table: 11279 LACNIC Prefixes per ASN: 11.41 LACNIC Region origin ASes announcing only one prefix: 2339 LACNIC Region transit ASes present in the Internet Routing Table: 2511 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: 9230 Number of LACNIC addresses announced to Internet: 171188480 Equivalent to 10 /8s, 52 /16s and 33 /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: 37941 Total AfriNIC prefixes after maximum aggregation: 6814 AfriNIC Deaggregation factor: 5.57 Prefixes being announced from the AfriNIC address blocks: 51436 Unique aggregates announced from the AfriNIC address blocks: 13806 AfriNIC Region origin ASes present in the Internet Routing Table: 1923 AfriNIC Prefixes per ASN: 26.75 AfriNIC Region origin ASes announcing only one prefix: 665 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: 1287 Number of AfriNIC addresses announced to Internet: 105208576 Equivalent to 6 /8s, 69 /16s and 91 /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 11413 8759 112 CHINAMOBILE-CN China Mobile Communication 7545 6149 841 648 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4352 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4348 535 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3700 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3286 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2892 857 527 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2286 811 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2176 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 13624 40951 5234 AMAZON-02, US 174 5295 8758 851 COGENT-174, US 11492 4781 317 604 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3634 1320 82 SHAW, CA 22773 3349 3032 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3227 54767 2478 DNIC-AS-00749, US 396982 3194 3854 431 GOOGLE-CLOUD-PLATFORM, US 16625 3070 1290 2248 AKAMAI-AS, US 36352 2833 231 860 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 7671 1713 148 UNI2-AS, ES 39891 4780 291 66 ALJAWWALSTC-AS, SA 20940 4027 3395 126 AKAMAI-ASN1, NL 9009 3899 358 2099 M247, RO 12389 3117 2305 887 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 581 TELLCOM-AS, TR 212238 2341 172 1707 CDNEXT, GB 8452 1618 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 8551 1432 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 12266 3256 574 UNINET, MX 10620 3506 481 1018 Telmex Colombia S.A., CO 13999 2537 538 355 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1370 2436 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1344 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1201 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1197 371 22 Telefonica del Peru S.A.A., PE 22884 1065 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1054 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 1822 644 27 RAYA-AS, EG 24863 1622 389 17 LINKdotNET-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1433 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 1076 523 47 Vodafone-, EG 36914 582 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 13624 40951 5234 AMAZON-02, US 8151 12266 3256 574 UNINET, MX 9808 11413 8759 112 CHINAMOBILE-CN China Mobile Communication 12479 7671 1713 148 UNI2-AS, ES 7545 6149 841 648 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5295 8758 851 COGENT-174, US 11492 4781 317 604 CABLEONE, US 39891 4780 291 66 ALJAWWALSTC-AS, SA 18403 4352 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4348 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 12266 11692 UNINET, MX 9808 11413 11301 CHINAMOBILE-CN China Mobile Communications Grou 12479 7671 7523 UNI2-AS, ES 7545 6149 5501 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 4714 ALJAWWALSTC-AS, SA 174 5295 4444 COGENT-174, US 18403 4352 4327 FPT-AS-AP FPT Telecom Company, VN 11492 4781 4177 CABLEONE, US 9498 4348 4036 BBIL-AP BHARTI Airtel Ltd., IN 20940 4027 3901 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 23.142.24.0/24 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 /12:299 /13:585 /14:1215 /15:2174 /16:13886 /17:8311 /18:13682 /19:24731 /20:44580 /21:52642 /22:113490 /23:106934 /24:623916 /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 6594 7671 UNI2-AS, ES 8151 6455 12266 UNINET, MX 11492 3577 4781 CABLEONE, US 39891 3489 4780 ALJAWWALSTC-AS, SA 6327 3430 3634 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2502 3349 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2348 13624 AMAZON-02, US 30036 2259 2600 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2193 3506 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) ---------------------------------------------- 1:2390 2:1535 3:820 4:10 5:5016 6:161 7:6 8:1585 9:1 11:172 12:1343 13:445 14:2536 15:366 16:285 17:379 18:920 20:561 21:4 22:188 23:7665 24:2815 25:2 27:2786 29:19 31:3347 32:43 33:1 34:84 35:255 36:3185 37:4601 38:10544 39:906 40:206 41:4511 42:1895 43:2661 44:380 45:19447 46:5138 47:323 49:1959 50:1893 51:593 52:1557 54:324 55:1122 56:11 57:280 58:2209 59:1255 60:1172 61:3009 62:3021 63:1805 64:5543 65:2190 66:4767 67:3122 68:1098 69:4014 70:1054 71:629 72:2942 74:2817 75:1526 76:608 77:2861 78:1896 79:1734 80:2225 81:2098 82:3185 83:1456 84:1888 85:3458 86:1092 87:2389 88:1331 89:4422 90:778 91:8469 92:2743 93:2944 94:4064 95:4425 96:1490 97:310 98:959 99:688 100:72 101:1409 102:4178 103:32435 104:5231 105:1192 106:974 107:2650 108:1259 109:4160 110:2233 111:3290 112:2143 113:1861 114:2005 115:2219 116:2109 117:2538 118:2861 119:1914 120:2085 121:1378 122:2812 123:2510 124:1609 125:2880 126:91 128:1612 129:980 130:1348 131:2136 132:782 133:451 134:1562 135:394 136:1358 137:1130 138:2993 139:1581 140:1623 141:1513 142:1941 143:1973 144:1160 145:565 146:2187 147:2119 148:2720 149:2993 150:1276 151:2110 152:2102 153:590 154:8168 155:1776 156:3161 157:1924 158:1335 159:2497 160:3685 161:1905 162:3889 163:2245 164:1894 165:2061 166:1512 167:2018 168:4157 169:797 170:5368 171:1007 172:4471 173:3366 174:919 175:1317 176:3766 177:5374 178:3977 179:2470 180:2672 181:4264 182:3477 183:2183 184:2125 185:21809 186:5520 187:4840 188:4283 189:4519 190:9868 191:1617 192:11316 193:9522 194:7891 195:5626 196:3662 197:3807 198:6120 199:8561 200:8551 201:6508 202:10389 203:10728 204:4583 205:3635 206:4485 207:3486 208:4284 209:5170 210:4644 211:2537 212:4603 213:3831 214:1016 215:46 216:6807 217:3275 218:1378 219:401 220:2133 221:1156 222:720 223:2550 End of report