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 30 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: 1023203 Prefixes after maximum aggregation (per Origin AS): 388359 Deaggregation factor: 2.63 Unique aggregates announced (without unneeded subnets): 491966 Number of IPv4 prefixes with a valid ROA: 582871 Number of IPv4 prefixes with an invalid ROA: 2603 Number of IPv4 prefixes with no ROA: 437728 Total ASes present in the Internet Routing Table: 77394 Prefixes per ASN: 13.22 Origin-only ASes present in the Internet Routing Table: 66372 Origin ASes announcing only one prefix: 26612 Transit ASes present in the Internet Routing Table: 11022 Transit-only ASes present in the Internet Routing Table: 554 Paths with bogon ASNs present in the IPv4 Routing Table: 126 Average AS path length visible in the Internet Routing Table: 5.0 Max AS path length visible: 57 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1162 Number of instances of unregistered ASNs: 1201 Number of 32-bit ASNs allocated by the RIRs: 47292 Number of 32-bit ASNs visible in the Routing Table: 38965 Prefixes from 32-bit ASNs in the Routing Table: 216949 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: 461 Number of addresses announced to Internet: 3108941568 Equivalent to 185 /8s, 78 /16s and 175 /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: 336975 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269697 Total APNIC prefixes after maximum aggregation: 79072 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 259978 Unique aggregates announced from the APNIC address blocks: 105220 APNIC Region origin ASes present in the Internet Routing Table: 14788 APNIC Prefixes per ASN: 17.58 APNIC Region origin ASes announcing only one prefix: 4475 APNIC Region transit ASes present in the Internet Routing Table: 1973 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: 10340 Number of APNIC addresses announced to Internet: 750541568 Equivalent to 44 /8s, 188 /16s and 91 /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: 297134 Total ARIN prefixes after maximum aggregation: 133405 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 299471 Unique aggregates announced from the ARIN address blocks: 142300 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: 7063 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: 31 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5316 Number of ARIN addresses announced to Internet: 1349827328 Equivalent to 80 /8s, 116 /16s and 187 /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: 284823 Total RIPE prefixes after maximum aggregation: 137847 RIPE Deaggregation factor: 2.07 Prefixes being announced from the RIPE address blocks: 283814 Unique aggregates announced from the RIPE address blocks: 179412 RIPE Region origin ASes present in the Internet Routing Table: 29115 RIPE Prefixes per ASN: 9.75 RIPE Region origin ASes announcing only one prefix: 12089 RIPE Region transit ASes present in the Internet Routing Table: 3998 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 23 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12720 Number of RIPE addresses announced to Internet: 732780288 Equivalent to 43 /8s, 173 /16s and 87 /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: 132345 Total LACNIC prefixes after maximum aggregation: 30270 LACNIC Deaggregation factor: 4.37 Prefixes being announced from the LACNIC address blocks: 128411 Unique aggregates announced from the LACNIC address blocks: 49472 LACNIC Region origin ASes present in the Internet Routing Table: 11299 LACNIC Prefixes per ASN: 11.36 LACNIC Region origin ASes announcing only one prefix: 2328 LACNIC Region transit ASes present in the Internet Routing Table: 2531 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 37 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9256 Number of LACNIC addresses announced to Internet: 170823936 Equivalent to 10 /8s, 46 /16s and 145 /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: 38042 Total AfriNIC prefixes after maximum aggregation: 7009 AfriNIC Deaggregation factor: 5.43 Prefixes being announced from the AfriNIC address blocks: 51068 Unique aggregates announced from the AfriNIC address blocks: 15166 AfriNIC Region origin ASes present in the Internet Routing Table: 1967 AfriNIC Prefixes per ASN: 25.96 AfriNIC Region origin ASes announcing only one prefix: 657 AfriNIC Region transit ASes present in the Internet Routing Table: 382 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: 1333 Number of AfriNIC addresses announced to Internet: 104720384 Equivalent to 6 /8s, 61 /16s and 232 /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 12925 8759 111 CHINAMOBILE-CN China Mobile Communication 7545 6133 838 611 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4471 536 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4392 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3943 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3686 1044 69 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3316 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2975 811 177 CMNET-JIANGSU-AP China Mobile communicati 24560 2922 865 507 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 14200 40861 5356 AMAZON-02, US 174 4957 8759 846 COGENT-174, US 11492 4744 315 801 CABLEONE, US 7155 3875 287 91 VIASAT-SP-BACKBONE, US 6327 3649 1320 82 SHAW, CA 22773 3355 3034 179 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3217 3858 435 GOOGLE-CLOUD-PLATFORM, US 16625 3055 1296 2210 AKAMAI-AS, US 4155 2960 231 1741 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 7508 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4038 3395 128 AKAMAI-ASN1, NL 9009 3883 367 2188 M247, RO 12389 3124 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 5384 2623 585 29 EMIRATES-INTERNET Emirates Internet, AE 34984 2405 361 586 TELLCOM-AS, TR 212238 2371 169 1726 CDNEXT, GB 203020 1848 222 848 HOSTROYALE, IN 8452 1608 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 12348 3273 572 UNINET, MX 10620 3486 472 1048 Telmex Colombia S.A., CO 13999 2531 511 347 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1371 2432 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1202 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1180 371 22 Telefonica del Peru S.A.A., PE 22884 1058 70 381 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 1792 660 28 RAYA-AS, EG 29571 1498 94 37 ORANGE-COTE-IVOIRE, CI 36992 1424 1495 374 ETISALAT-MISR, EG 20011 1319 204 345 INTERNET-SOLUTIONS, ZA 36903 1249 554 96 MT-MPLS, MA 24863 1243 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 972 521 42 Vodafone-, EG 36914 572 82 3 KENET-AS, KE 3741 565 725 321 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 14200 40861 5356 AMAZON-02, US 9808 12925 8759 111 CHINAMOBILE-CN China Mobile Communication 8151 12348 3273 572 UNINET, MX 12479 7508 1711 150 UNI2-AS, ES 7545 6133 838 611 TPG-INTERNET-AP TPG Telecom Limited, AU 174 4957 8759 846 COGENT-174, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4744 315 801 CABLEONE, US 9498 4471 536 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4392 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 12925 12814 CHINAMOBILE-CN China Mobile Communications Grou 8151 12348 11776 UNINET, MX 12479 7508 7358 UNI2-AS, ES 7545 6133 5522 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4392 4366 FPT-AS-AP FPT Telecom Company, VN 9498 4471 4157 BBIL-AP BHARTI Airtel Ltd., IN 174 4957 4111 COGENT-174, US 11492 4744 3943 CABLEONE, US 7552 3943 3916 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 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 23.147.240.0/24 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 /13:580 /14:1215 /15:2173 /16:13866 /17:8350 /18:13773 /19:24872 /20:45338 /21:53101 /22:114362 /23:108833 /24:636278 /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 6519 12348 UNINET, MX 12479 6459 7508 UNI2-AS, ES 11492 3560 4744 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3447 3649 SHAW, CA 7155 2833 3875 VIASAT-SP-BACKBONE, US 22773 2507 3355 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2407 14200 AMAZON-02, US 30036 2319 2662 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2206 3486 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) ---------------------------------------------- 1:2440 2:1659 3:925 4:10 5:5203 6:156 7:6 8:1565 9:4 11:172 12:1254 13:513 14:2609 15:392 16:286 17:389 18:907 20:586 21:4 22:188 23:7933 24:2810 25:2 27:2865 29:19 31:3497 32:37 33:1 34:88 35:265 36:4296 37:4600 38:10607 39:999 40:270 41:4495 42:1949 43:2777 44:389 45:19708 46:5199 47:346 49:2025 50:2073 51:592 52:1599 54:360 55:1109 56:11 57:294 58:2258 59:1325 60:1188 61:3087 62:3081 63:1799 64:5669 65:2163 66:4920 67:3148 68:1098 69:4055 70:1046 71:641 72:2981 74:2858 75:1527 76:606 77:2898 78:1936 79:1752 80:2261 81:2117 82:3306 83:1500 84:1943 85:3514 86:1227 87:2385 88:1370 89:4506 90:794 91:8522 92:2845 93:2997 94:4264 95:4487 96:1503 97:311 98:950 99:724 100:71 101:1465 102:4592 103:32784 104:5347 105:1063 106:876 107:2662 108:1254 109:4243 110:2240 111:3587 112:2484 113:1872 114:1990 115:2299 116:2142 117:2709 118:3051 119:1953 120:2215 121:1349 122:2839 123:2481 124:1748 125:2910 126:91 128:1594 129:1008 130:1313 131:2242 132:793 133:459 134:1630 135:412 136:1489 137:1135 138:3011 139:1594 140:1626 141:1556 142:1934 143:2050 144:1216 145:623 146:2193 147:2153 148:2729 149:2974 150:1263 151:2429 152:2134 153:629 154:7612 155:1994 156:3224 157:1982 158:1477 159:2545 160:3662 161:1976 162:3928 163:2316 164:1946 165:2548 166:1565 167:2093 168:4047 169:793 170:5508 171:996 172:4288 173:3434 174:908 175:1346 176:3891 177:5392 178:4158 179:2488 180:2635 181:4345 182:3562 183:2359 184:2114 185:21900 186:5658 187:4852 188:4343 189:4516 190:9743 191:1632 192:11426 193:9549 194:7946 195:5783 196:3674 197:3915 198:6155 199:8673 200:8556 201:6561 202:10624 203:10860 204:4586 205:3660 206:4558 207:3542 208:4321 209:5217 210:4788 211:2677 212:4673 213:3891 214:1040 215:51 216:6890 217:3459 218:1472 219:421 220:2155 221:1211 222:749 223:2868 End of report