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 16 Aug, 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: 1021013 Prefixes after maximum aggregation (per Origin AS): 386698 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 489247 Number of IPv4 prefixes with a valid ROA: 579271 Number of IPv4 prefixes with an invalid ROA: 2294 Number of IPv4 prefixes with no ROA: 439447 Total ASes present in the Internet Routing Table: 77331 Prefixes per ASN: 13.20 Origin-only ASes present in the Internet Routing Table: 66324 Origin ASes announcing only one prefix: 26588 Transit ASes present in the Internet Routing Table: 11007 Transit-only ASes present in the Internet Routing Table: 555 Paths with bogon ASNs present in the IPv4 Routing Table: 129 Average AS path length visible in the Internet Routing Table: 5.0 Max AS path length visible: 97 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1201 Number of instances of unregistered ASNs: 1240 Number of 32-bit ASNs allocated by the RIRs: 47181 Number of 32-bit ASNs visible in the Routing Table: 38896 Prefixes from 32-bit ASNs in the Routing Table: 215300 Number of bogon 32-bit ASNs visible in the Routing Table: 110 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 443 Number of addresses announced to Internet: 3108922368 Equivalent to 185 /8s, 78 /16s and 100 /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: 336401 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269038 Total APNIC prefixes after maximum aggregation: 78716 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 259711 Unique aggregates announced from the APNIC address blocks: 105232 APNIC Region origin ASes present in the Internet Routing Table: 14789 APNIC Prefixes per ASN: 17.56 APNIC Region origin ASes announcing only one prefix: 4509 APNIC Region transit ASes present in the Internet Routing Table: 1974 Average APNIC Region AS path length visible: 5.4 Max APNIC Region AS path length visible: 34 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10336 Number of APNIC addresses announced to Internet: 749865216 Equivalent to 44 /8s, 178 /16s and 9 /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: 296310 Total ARIN prefixes after maximum aggregation: 132845 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 298086 Unique aggregates announced from the ARIN address blocks: 141728 ARIN Region origin ASes present in the Internet Routing Table: 19263 ARIN Prefixes per ASN: 15.47 ARIN Region origin ASes announcing only one prefix: 7048 ARIN Region transit ASes present in the Internet Routing Table: 1958 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: 5298 Number of ARIN addresses announced to Internet: 1349467392 Equivalent to 80 /8s, 111 /16s and 61 /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: 284082 Total RIPE prefixes after maximum aggregation: 137437 RIPE Deaggregation factor: 2.07 Prefixes being announced from the RIPE address blocks: 283025 Unique aggregates announced from the RIPE address blocks: 178835 RIPE Region origin ASes present in the Internet Routing Table: 29083 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12059 RIPE Region transit ASes present in the Internet Routing Table: 3989 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: 12682 Number of RIPE addresses announced to Internet: 732802304 Equivalent to 43 /8s, 173 /16s and 173 /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: 132637 Total LACNIC prefixes after maximum aggregation: 29918 LACNIC Deaggregation factor: 4.43 Prefixes being announced from the LACNIC address blocks: 128758 Unique aggregates announced from the LACNIC address blocks: 49045 LACNIC Region origin ASes present in the Internet Routing Table: 11290 LACNIC Prefixes per ASN: 11.40 LACNIC Region origin ASes announcing only one prefix: 2317 LACNIC Region transit ASes present in the Internet Routing Table: 2533 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: 9258 Number of LACNIC addresses announced to Internet: 171260928 Equivalent to 10 /8s, 53 /16s and 60 /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: 37745 Total AfriNIC prefixes after maximum aggregation: 7010 AfriNIC Deaggregation factor: 5.38 Prefixes being announced from the AfriNIC address blocks: 50990 Unique aggregates announced from the AfriNIC address blocks: 14025 AfriNIC Region origin ASes present in the Internet Routing Table: 1958 AfriNIC Prefixes per ASN: 26.04 AfriNIC Region origin ASes announcing only one prefix: 655 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1322 Number of AfriNIC addresses announced to Internet: 105281536 Equivalent to 6 /8s, 70 /16s and 120 /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 12874 8759 111 CHINAMOBILE-CN China Mobile Communication 7545 6133 838 612 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4605 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4471 536 314 BBIL-AP BHARTI Airtel Ltd., IN 7552 3939 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3719 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3313 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2967 811 177 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 45090 2180 1437 75 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 13884 41106 5313 AMAZON-02, US 174 5100 8769 864 COGENT-174, US 11492 4733 314 786 CABLEONE, US 7155 3875 287 91 VIASAT-SP-BACKBONE, US 6327 3643 1320 82 SHAW, CA 22773 3348 3029 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3215 3858 436 GOOGLE-CLOUD-PLATFORM, US 16625 3052 1287 2208 AKAMAI-AS, US 4155 2935 229 1737 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 7558 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4035 3395 128 AKAMAI-ASN1, NL 9009 3865 366 2181 M247, RO 12389 3114 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 5384 2623 585 29 EMIRATES-INTERNET Emirates Internet, AE 34984 2403 361 584 TELLCOM-AS, TR 212238 2331 165 1695 CDNEXT, GB 203020 1647 209 772 HOSTROYALE, IN 13188 1605 100 37 TRIOLAN, UA 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 12379 3272 580 UNINET, MX 10620 3482 472 1048 Telmex Colombia S.A., CO 13999 2525 511 349 Mega Cable, S.A. de C.V., MX 11830 1986 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1223 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1185 371 22 Telefonica del Peru S.A.A., PE 22884 1060 70 379 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1018 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 1770 660 28 RAYA-AS, EG 29571 1499 94 32 ORANGE-COTE-IVOIRE, CI 36992 1425 1501 377 ETISALAT-MISR, EG 20011 1319 204 345 INTERNET-SOLUTIONS, ZA 36903 1249 554 96 MT-MPLS, MA 24863 1242 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 990 522 45 Vodafone-, EG 3741 564 725 321 IS, ZA 36914 560 82 3 KENET-AS, KE 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 13884 41106 5313 AMAZON-02, US 9808 12874 8759 111 CHINAMOBILE-CN China Mobile Communication 8151 12379 3272 580 UNINET, MX 12479 7558 1711 149 UNI2-AS, ES 7545 6133 838 612 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5100 8769 864 COGENT-174, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4733 314 786 CABLEONE, US 18403 4605 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4471 536 314 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 9808 12874 12763 CHINAMOBILE-CN China Mobile Communications Grou 8151 12379 11799 UNINET, MX 12479 7558 7409 UNI2-AS, ES 7545 6133 5521 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4605 4578 FPT-AS-AP FPT Telecom Company, VN 174 5100 4236 COGENT-174, US 9498 4471 4157 BBIL-AP BHARTI Airtel Ltd., IN 11492 4733 3947 CABLEONE, US 7552 3939 3912 VIETEL-AS-AP Viettel Group, VN 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 32182 UNALLOCATED 8.9.96.0/23 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 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 23.143.236.0/24 Origin: 401925 GRAPE-AWS-1, US 23.143.236.0/24 Transit: 14618 AMAZON-AES, 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 /13:581 /14:1215 /15:2177 /16:13894 /17:8355 /18:13803 /19:24868 /20:45029 /21:53004 /22:114251 /23:108760 /24:634614 /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 6567 12379 UNINET, MX 12479 6518 7558 UNI2-AS, ES 11492 3552 4733 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3441 3643 SHAW, CA 7155 2833 3875 VIASAT-SP-BACKBONE, US 22773 2501 3348 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2380 13884 AMAZON-02, US 30036 2302 2645 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2202 3482 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) ---------------------------------------------- 1:2443 2:1645 3:885 4:10 5:5152 6:158 7:6 8:1571 9:3 11:172 12:1256 13:455 14:2589 15:377 16:284 17:382 18:908 20:583 21:4 22:188 23:7867 24:2802 25:2 27:2867 29:19 31:3505 32:37 33:1 34:87 35:264 36:4276 37:4633 38:10507 39:996 40:266 41:4476 42:2079 43:2756 44:389 45:19592 46:5192 47:342 49:1979 50:2061 51:592 52:1550 54:322 55:1111 56:11 57:289 58:2247 59:1335 60:1181 61:3105 62:3059 63:1799 64:5659 65:2167 66:4884 67:3149 68:1099 69:4064 70:1047 71:640 72:2967 74:2854 75:1527 76:609 77:2892 78:1920 79:1738 80:2249 81:2099 82:3293 83:1489 84:1946 85:3477 86:1220 87:2408 88:1369 89:4491 90:776 91:8518 92:2840 93:2979 94:4264 95:4494 96:1500 97:311 98:959 99:709 100:71 101:1463 102:4489 103:32714 104:5296 105:1069 106:874 107:2645 108:1284 109:4252 110:2249 111:3587 112:2462 113:1882 114:1989 115:2320 116:2137 117:2698 118:3066 119:1937 120:2207 121:1347 122:2840 123:2462 124:1740 125:2909 126:91 128:1619 129:1015 130:1328 131:2159 132:784 133:450 134:1627 135:402 136:1483 137:1142 138:3019 139:1602 140:1626 141:1540 142:1940 143:2022 144:1183 145:593 146:2197 147:2111 148:2721 149:3045 150:1281 151:2396 152:2130 153:593 154:7924 155:1901 156:3131 157:1975 158:1384 159:2528 160:3695 161:1948 162:3913 163:2301 164:1912 165:2488 166:1546 167:2079 168:4077 169:790 170:5462 171:1004 172:4279 173:3420 174:906 175:1345 176:3855 177:5385 178:4119 179:2518 180:2636 181:4334 182:3595 183:2383 184:2119 185:21895 186:5584 187:4917 188:4319 189:4536 190:9831 191:1645 192:11382 193:9547 194:7959 195:5742 196:3695 197:3776 198:6142 199:8666 200:8569 201:6520 202:10612 203:10865 204:4598 205:3637 206:4551 207:3532 208:4328 209:5177 210:4779 211:2667 212:4670 213:3899 214:1036 215:51 216:6864 217:3474 218:1451 219:422 220:2142 221:1211 222:743 223:2866 End of report