IPv4 R&E Routing Table Report 21:10 GMT Sat 29 Nov, 2025 IPv4 BGP Table (Global) as seen at AARNET (Brisbane). Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/AARNET/ Analysis Summary ---------------- BGP routing table entries examined: 1017135 Prefixes after maximum aggregation (per Origin AS): 393382 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 503810 Number of IPv4 prefixes with a valid ROA: 592781 Number of IPv4 prefixes with an invalid ROA: 126 Number of IPv4 prefixes with no ROA: 424228 Total ASes present in the Internet Routing Table: 77573 Prefixes per ASN: 13.11 Origin-only ASes present in the Internet Routing Table: 66406 Origin ASes announcing only one prefix: 27119 Transit ASes present in the Internet Routing Table: 11167 Transit-only ASes present in the Internet Routing Table: 567 Paths with bogon ASNs present in the IPv4 Routing Table: 7 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 975 Number of instances of unregistered ASNs: 1005 Number of 32-bit ASNs allocated by the RIRs: 48096 Number of 32-bit ASNs visible in the Routing Table: 39377 Prefixes from 32-bit ASNs in the Routing Table: 216759 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 468 Number of addresses announced to Internet: 3100435968 Equivalent to 184 /8s, 204 /16s and 230 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 332793 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274055 Total APNIC prefixes after maximum aggregation: 80950 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 261758 Unique aggregates announced from the APNIC address blocks: 106214 APNIC Region origin ASes present in the Internet Routing Table: 14877 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4530 APNIC Region transit ASes present in the Internet Routing Table: 2000 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10438 Number of APNIC addresses announced to Internet: 752924160 Equivalent to 44 /8s, 224 /16s and 182 /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: 298780 Total ARIN prefixes after maximum aggregation: 134443 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298552 Unique aggregates announced from the ARIN address blocks: 145601 ARIN Region origin ASes present in the Internet Routing Table: 19385 ARIN Prefixes per ASN: 15.40 ARIN Region origin ASes announcing only one prefix: 7110 ARIN Region transit ASes present in the Internet Routing Table: 1990 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5424 Number of ARIN addresses announced to Internet: 1337424384 Equivalent to 79 /8s, 183 /16s and 122 /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: 282321 Total RIPE prefixes after maximum aggregation: 139985 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283149 Unique aggregates announced from the RIPE address blocks: 183609 RIPE Region origin ASes present in the Internet Routing Table: 29125 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12082 RIPE Region transit ASes present in the Internet Routing Table: 4037 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 46 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12848 Number of RIPE addresses announced to Internet: 735824896 Equivalent to 43 /8s, 219 /16s and 204 /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: 125496 Total LACNIC prefixes after maximum aggregation: 30459 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121494 Unique aggregates announced from the LACNIC address blocks: 49655 LACNIC Region origin ASes present in the Internet Routing Table: 11306 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2666 LACNIC Region transit ASes present in the Internet Routing Table: 2562 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9310 Number of LACNIC addresses announced to Internet: 170721280 Equivalent to 10 /8s, 45 /16s and 0 /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: 35508 Total AfriNIC prefixes after maximum aggregation: 6897 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 51713 Unique aggregates announced from the AfriNIC address blocks: 18343 AfriNIC Region origin ASes present in the Internet Routing Table: 1995 AfriNIC Prefixes per ASN: 25.92 AfriNIC Region origin ASes announcing only one prefix: 731 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1357 Number of AfriNIC addresses announced to Internet: 103306240 Equivalent to 6 /8s, 40 /16s and 84 /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 13506 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6067 832 594 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4581 541 335 BBIL-AP BHARTI Airtel Ltd., IN 18403 4432 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4009 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3330 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3313 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2943 865 498 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2493 274 1922 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14229 37207 5388 AMAZON-02, US 22773 4776 3115 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3303 4861 481 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 3003 1288 2186 AKAMAI-AS, US 36352 2823 231 915 AS-COLOCROSSING, US 174 2657 8766 836 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7297 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4022 380 2287 M247, RO 20940 3986 3395 126 AKAMAI-ASN1, NL 12389 3145 2317 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2536 180 1834 CDNEXT, GB 34984 2420 363 577 TELLCOM-AS, TR 8452 1699 1852 14 TE-AS TE-AS, EG 203020 1611 241 779 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12669 3301 570 UNINET, MX 10620 3452 463 1106 Telmex Colombia S.A., CO 13999 2509 509 348 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1348 783 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1336 278 31 Techtel LMDS Comunicaciones Interactivas 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1057 70 364 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1986 630 32 RAYA-AS, EG 36992 1681 1508 399 ETISALAT-MISR, EG 24863 1264 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1086 520 31 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 545 57 58 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14229 37207 5388 AMAZON-02, US 9808 13506 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12669 3301 570 UNINET, MX 12479 7297 1711 149 UNI2-AS, ES 7545 6067 832 594 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4776 3115 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4581 541 335 BBIL-AP BHARTI Airtel Ltd., IN 18403 4432 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13506 13389 CHINAMOBILE-CN China Mobile Communications Grou 8151 12669 12099 UNINET, MX 12479 7297 7148 UNI2-AS, ES 7545 6067 5473 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4776 4408 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4432 4408 FPT-AS-AP FPT Telecom Company, VN 9498 4581 4246 BBIL-AP BHARTI Airtel Ltd., IN 7552 4009 3981 VIETEL-AS-AP Viettel Group, VN 20940 3986 3860 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/AARNET/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 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 Complete listing at https://bgp.nsrc.org/REN/AARNET/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- !!Default route being announced!! /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:94 /12:298 /13:582 /14:1202 /15:2094 /16:13678 /17:8228 /18:13497 /19:24784 /20:44568 /21:52067 /22:113078 /23:105225 /24:637668 /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 6851 12669 UNINET, MX 12479 6234 7297 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3049 4776 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2432 14229 AMAZON-02, US 30036 2309 2652 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2207 3452 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/AARNET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2438 2:1574 3:971 4:10 5:4957 6:190 7:6 8:1501 9:6 11:172 12:1232 13:570 14:2606 15:413 16:303 17:388 18:912 20:586 21:4 22:188 23:8134 24:2554 25:2 27:2807 29:19 31:3395 32:31 33:1 34:81 35:284 36:4583 37:4501 38:9321 39:1188 40:457 41:4461 42:1987 43:2839 44:405 45:19441 46:5109 47:377 49:2150 50:2047 51:597 52:1567 54:288 55:1107 56:11 57:303 58:2298 59:1314 60:1185 61:3050 62:3100 63:1747 64:5962 65:2130 66:5929 67:3248 68:1495 69:4181 70:1023 71:627 72:3019 74:2935 75:1517 76:599 77:2766 78:1920 79:1779 80:2295 81:2094 82:3833 83:1467 84:2029 85:3642 86:1103 87:2156 88:1340 89:4599 90:842 91:8436 92:2841 93:3014 94:4214 95:4569 96:1451 97:312 98:958 99:773 100:67 101:1195 102:4257 103:32216 104:5506 105:797 106:904 107:2806 108:1199 109:4251 110:2293 111:3895 112:2776 113:1905 114:2096 115:2284 116:2139 117:3123 118:3035 119:2048 120:2370 121:1513 122:2947 123:2295 124:1601 125:2894 126:125 128:1616 129:966 130:1511 131:2250 132:772 133:462 134:1613 135:395 136:1498 137:1336 138:2885 139:1601 140:1726 141:1546 142:2320 143:2127 144:1339 145:634 146:2185 147:2168 148:2790 149:2878 150:1299 151:2638 152:2281 153:690 154:9201 155:2248 156:4111 157:2205 158:1453 159:2677 160:3768 161:1992 162:3999 163:2330 164:1960 165:2595 166:1308 167:2136 168:3881 169:793 170:5444 171:1115 172:4498 173:3406 174:906 175:1343 176:3767 177:4706 178:4298 179:2268 180:2816 181:4305 182:3839 183:2597 184:2059 185:21712 186:5491 187:4765 188:4438 189:4492 190:9703 191:1548 192:11454 193:9485 194:7862 195:5612 196:3263 197:3202 198:6235 199:6099 200:8212 201:6383 202:10432 203:10575 204:4640 205:3735 206:4415 207:3904 208:4260 209:5458 210:4775 211:2673 212:4907 213:4019 214:1042 215:52 216:7121 217:3356 218:1584 219:403 220:2199 221:1283 222:768 223:3158 End of report