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 09 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: 1011892 Prefixes after maximum aggregation (per Origin AS): 385206 Deaggregation factor: 2.63 Unique aggregates announced (without unneeded subnets): 488676 Number of IPv4 prefixes with a valid ROA: 559685 Number of IPv4 prefixes with an invalid ROA: 845 Number of IPv4 prefixes with no ROA: 451362 Total ASes present in the Internet Routing Table: 77178 Prefixes per ASN: 13.11 Origin-only ASes present in the Internet Routing Table: 66189 Origin ASes announcing only one prefix: 26583 Transit ASes present in the Internet Routing Table: 10989 Transit-only ASes present in the Internet Routing Table: 555 Paths with bogon ASNs present in the IPv4 Routing Table: 88 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: 1140 Number of instances of unregistered ASNs: 1169 Number of 32-bit ASNs allocated by the RIRs: 47097 Number of 32-bit ASNs visible in the Routing Table: 38787 Prefixes from 32-bit ASNs in the Routing Table: 213592 Number of bogon 32-bit ASNs visible in the Routing Table: 81 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 440 Number of addresses announced to Internet: 3107936000 Equivalent to 185 /8s, 63 /16s and 87 /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: 332428 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265728 Total APNIC prefixes after maximum aggregation: 78189 APNIC Deaggregation factor: 3.40 Prefixes being announced from the APNIC address blocks: 256588 Unique aggregates announced from the APNIC address blocks: 104932 APNIC Region origin ASes present in the Internet Routing Table: 14732 APNIC Prefixes per ASN: 17.42 APNIC Region origin ASes announcing only one prefix: 4487 APNIC Region transit ASes present in the Internet Routing Table: 1962 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10289 Number of APNIC addresses announced to Internet: 749652224 Equivalent to 44 /8s, 174 /16s and 201 /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: 295274 Total ARIN prefixes after maximum aggregation: 132744 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 297145 Unique aggregates announced from the ARIN address blocks: 141617 ARIN Region origin ASes present in the Internet Routing Table: 19251 ARIN Prefixes per ASN: 15.44 ARIN Region origin ASes announcing only one prefix: 7047 ARIN Region transit ASes present in the Internet Routing Table: 1963 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: 5282 Number of ARIN addresses announced to Internet: 1349441280 Equivalent to 80 /8s, 110 /16s and 215 /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: 280225 Total RIPE prefixes after maximum aggregation: 136722 RIPE Deaggregation factor: 2.05 Prefixes being announced from the RIPE address blocks: 278882 Unique aggregates announced from the RIPE address blocks: 178629 RIPE Region origin ASes present in the Internet Routing Table: 29037 RIPE Prefixes per ASN: 9.60 RIPE Region origin ASes announcing only one prefix: 12060 RIPE Region transit ASes present in the Internet Routing Table: 3981 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12648 Number of RIPE addresses announced to Internet: 732209920 Equivalent to 43 /8s, 164 /16s and 163 /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: 132106 Total LACNIC prefixes after maximum aggregation: 29841 LACNIC Deaggregation factor: 4.43 Prefixes being announced from the LACNIC address blocks: 128287 Unique aggregates announced from the LACNIC address blocks: 49056 LACNIC Region origin ASes present in the Internet Routing Table: 11279 LACNIC Prefixes per ASN: 11.37 LACNIC Region origin ASes announcing only one prefix: 2323 LACNIC Region transit ASes present in the Internet Routing Table: 2524 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 56 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9249 Number of LACNIC addresses announced to Internet: 171162624 Equivalent to 10 /8s, 51 /16s and 188 /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: 37419 Total AfriNIC prefixes after maximum aggregation: 6980 AfriNIC Deaggregation factor: 5.36 Prefixes being announced from the AfriNIC address blocks: 50550 Unique aggregates announced from the AfriNIC address blocks: 14063 AfriNIC Region origin ASes present in the Internet Routing Table: 1955 AfriNIC Prefixes per ASN: 25.86 AfriNIC Region origin ASes announcing only one prefix: 666 AfriNIC Region transit ASes present in the Internet Routing Table: 385 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: 1319 Number of AfriNIC addresses announced to Internet: 105227008 Equivalent to 6 /8s, 69 /16s and 163 /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 12609 8759 111 CHINAMOBILE-CN China Mobile Communication 7545 6135 837 619 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4570 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3693 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3305 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 2964 811 177 CMNET-JIANGSU-AP China Mobile communicati 24560 2918 864 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2174 427 182 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 13784 41095 5308 AMAZON-02, US 174 5428 8769 850 COGENT-174, US 11492 4783 317 680 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3640 1320 82 SHAW, CA 22773 3336 3029 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3204 3858 436 GOOGLE-CLOUD-PLATFORM, US 16625 3041 1286 2216 AKAMAI-AS, US 4155 2907 227 1732 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 7568 1711 153 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4023 3395 128 AKAMAI-ASN1, NL 9009 3862 366 2178 M247, RO 12389 3113 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 584 TELLCOM-AS, TR 212238 2326 164 1691 CDNEXT, GB 13188 1605 100 37 TRIOLAN, UA 8452 1585 1852 14 TE-AS TE-AS, EG 203020 1521 191 669 HOSTROYALE, IN 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 12367 3272 577 UNINET, MX 10620 3475 472 1052 Telmex Colombia S.A., CO 13999 2529 511 354 Mega Cable, S.A. de C.V., MX 11830 1986 369 64 Instituto Costarricense de Electricidad y 28573 1371 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1205 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1184 371 22 Telefonica del Peru S.A.A., PE 22884 1066 68 371 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1017 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 1488 94 32 ORANGE-COTE-IVOIRE, CI 36992 1416 1494 373 ETISALAT-MISR, EG 20011 1310 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 972 520 43 Vodafone-, EG 36914 566 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 13784 41095 5308 AMAZON-02, US 9808 12609 8759 111 CHINAMOBILE-CN China Mobile Communication 8151 12367 3272 577 UNINET, MX 12479 7568 1711 153 UNI2-AS, ES 7545 6135 837 619 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5428 8769 850 COGENT-174, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4783 317 680 CABLEONE, US 18403 4570 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 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 12609 12498 CHINAMOBILE-CN China Mobile Communications Grou 8151 12367 11790 UNINET, MX 12479 7568 7415 UNI2-AS, ES 7545 6135 5516 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 174 5428 4578 COGENT-174, US 18403 4570 4545 FPT-AS-AP FPT Telecom Company, VN 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 11492 4783 4103 CABLEONE, US 7552 3942 3915 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 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 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 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: 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /12:298 /13:581 /14:1214 /15:2173 /16:13875 /17:8292 /18:13688 /19:24756 /20:44578 /21:52616 /22:113422 /23:107140 /24:629096 /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 6556 12367 UNINET, MX 12479 6529 7568 UNI2-AS, ES 11492 3593 4783 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3438 3640 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2489 3336 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2339 13784 AMAZON-02, US 10620 2195 3475 Telmex Colombia S.A., CO 30036 2164 2488 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2438 2:1529 3:876 4:10 5:5020 6:157 7:6 8:1563 9:2 11:172 12:1336 13:471 14:2584 15:370 16:286 17:379 18:899 20:570 21:4 22:188 23:7834 24:2793 25:2 27:2809 29:19 31:3405 32:43 33:1 34:84 35:260 36:4214 37:4595 38:10696 39:965 40:256 41:4460 42:2053 43:2709 44:387 45:19426 46:5105 47:338 49:1921 50:2035 51:592 52:1554 54:324 55:1109 56:11 57:283 58:2192 59:1330 60:1173 61:3012 62:3049 63:1790 64:5618 65:2162 66:4852 67:3144 68:1093 69:4055 70:1034 71:634 72:2944 74:2843 75:1525 76:606 77:2880 78:1905 79:1740 80:2218 81:2097 82:3235 83:1437 84:1924 85:3461 86:1111 87:2401 88:1326 89:4448 90:775 91:8495 92:2754 93:2966 94:4118 95:4457 96:1504 97:308 98:954 99:699 100:71 101:1461 102:4421 103:32346 104:5265 105:1054 106:874 107:2654 108:1268 109:4239 110:2234 111:3521 112:2419 113:1871 114:1984 115:2268 116:2115 117:2680 118:2911 119:1915 120:2187 121:1330 122:2825 123:2422 124:1677 125:2886 126:91 128:1611 129:996 130:1330 131:2138 132:782 133:450 134:1599 135:401 136:1471 137:1144 138:2998 139:1590 140:1622 141:1532 142:1946 143:1992 144:1184 145:581 146:2185 147:2103 148:2714 149:2997 150:1281 151:2305 152:2117 153:593 154:7941 155:1882 156:3089 157:1949 158:1376 159:2527 160:3662 161:1939 162:3901 163:2273 164:1903 165:2487 166:1535 167:2050 168:4054 169:790 170:5407 171:995 172:4247 173:3378 174:911 175:1319 176:3787 177:5326 178:4054 179:2494 180:2622 181:4307 182:3590 183:2324 184:2118 185:21792 186:5527 187:4894 188:4289 189:4530 190:9809 191:1582 192:11352 193:9519 194:7864 195:5688 196:3646 197:3702 198:6147 199:8624 200:8520 201:6532 202:10452 203:10735 204:4600 205:3644 206:4535 207:3528 208:4302 209:5156 210:4742 211:2645 212:4621 213:3856 214:1027 215:50 216:6837 217:3302 218:1437 219:404 220:2145 221:1210 222:737 223:2814 End of report