IPv4 R&E Routing Table Report 21:10 GMT Wed 26 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: 1017060 Prefixes after maximum aggregation (per Origin AS): 393162 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 503884 Number of IPv4 prefixes with a valid ROA: 592368 Number of IPv4 prefixes with an invalid ROA: 123 Number of IPv4 prefixes with no ROA: 424569 Total ASes present in the Internet Routing Table: 77566 Prefixes per ASN: 13.11 Origin-only ASes present in the Internet Routing Table: 66403 Origin ASes announcing only one prefix: 27111 Transit ASes present in the Internet Routing Table: 11163 Transit-only ASes present in the Internet Routing Table: 570 Paths with bogon ASNs present in the IPv4 Routing Table: 8 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 984 Number of instances of unregistered ASNs: 1014 Number of 32-bit ASNs allocated by the RIRs: 48051 Number of 32-bit ASNs visible in the Routing Table: 39365 Prefixes from 32-bit ASNs in the Routing Table: 216563 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 489 Number of addresses announced to Internet: 3100561664 Equivalent to 184 /8s, 206 /16s and 209 /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: 332787 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274065 Total APNIC prefixes after maximum aggregation: 80918 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 261577 Unique aggregates announced from the APNIC address blocks: 106294 APNIC Region origin ASes present in the Internet Routing Table: 14884 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4534 APNIC Region transit ASes present in the Internet Routing Table: 2006 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: 10442 Number of APNIC addresses announced to Internet: 752920320 Equivalent to 44 /8s, 224 /16s and 167 /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: 298584 Total ARIN prefixes after maximum aggregation: 134238 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298429 Unique aggregates announced from the ARIN address blocks: 145565 ARIN Region origin ASes present in the Internet Routing Table: 19378 ARIN Prefixes per ASN: 15.40 ARIN Region origin ASes announcing only one prefix: 7105 ARIN Region transit ASes present in the Internet Routing Table: 1987 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: 5416 Number of ARIN addresses announced to Internet: 1337547520 Equivalent to 79 /8s, 185 /16s and 91 /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: 282302 Total RIPE prefixes after maximum aggregation: 140016 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283121 Unique aggregates announced from the RIPE address blocks: 183575 RIPE Region origin ASes present in the Internet Routing Table: 29118 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12081 RIPE Region transit ASes present in the Internet Routing Table: 4038 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: 12843 Number of RIPE addresses announced to Internet: 735767808 Equivalent to 43 /8s, 218 /16s and 237 /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: 125516 Total LACNIC prefixes after maximum aggregation: 30437 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121511 Unique aggregates announced from the LACNIC address blocks: 49607 LACNIC Region origin ASes present in the Internet Routing Table: 11301 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2662 LACNIC Region transit ASes present in the Internet Routing Table: 2554 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9307 Number of LACNIC addresses announced to Internet: 170742272 Equivalent to 10 /8s, 45 /16s and 82 /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: 35609 Total AfriNIC prefixes after maximum aggregation: 6899 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 51932 Unique aggregates announced from the AfriNIC address blocks: 18446 AfriNIC Region origin ASes present in the Internet Routing Table: 1994 AfriNIC Prefixes per ASN: 26.04 AfriNIC Region origin ASes announcing only one prefix: 729 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: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1357 Number of AfriNIC addresses announced to Internet: 103342592 Equivalent to 6 /8s, 40 /16s and 226 /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 13389 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6067 832 594 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4577 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4559 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3990 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3313 1868 98 VNPT-AS-VN VNPT Corp, VN 56046 3310 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2942 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2525 159 556 LCS-AS-AP LARUS Limited, HK 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 14224 37207 5388 AMAZON-02, US 22773 4740 3113 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4714 313 912 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3302 4860 480 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 3003 1288 2186 AKAMAI-AS, US 36352 2822 231 920 AS-COLOCROSSING, US 30036 2652 366 341 MEDIACOM-ENTERPRISE-BUSINESS, 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 7305 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4016 379 2282 M247, RO 20940 3984 3395 126 AKAMAI-ASN1, NL 12389 3146 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2529 180 1827 CDNEXT, GB 34984 2419 363 577 TELLCOM-AS, TR 8452 1698 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1486 169 853 HOSTROYALE, IN 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 12628 3301 573 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2512 510 347 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1371 2432 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1343 278 31 Techtel LMDS Comunicaciones Interactivas 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1057 70 364 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1015 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 1683 1509 398 ETISALAT-MISR, EG 24863 1264 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1104 523 34 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 558 82 3 KENET-AS, KE 15399 546 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 14224 37207 5388 AMAZON-02, US 9808 13389 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12628 3301 573 UNINET, MX 12479 7305 1711 149 UNI2-AS, ES 7545 6067 832 594 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4740 3113 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4714 313 912 CABLEONE, US 9498 4577 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4559 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 13389 13272 CHINAMOBILE-CN China Mobile Communications Grou 8151 12628 12055 UNINET, MX 12479 7305 7156 UNI2-AS, ES 7545 6067 5473 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4559 4535 FPT-AS-AP FPT Telecom Company, VN 22773 4740 4374 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4577 4241 BBIL-AP BHARTI Airtel Ltd., IN 7552 3990 3962 VIETEL-AS-AP Viettel Group, VN 20940 3984 3858 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 /16:13682 /17:8229 /18:13495 /19:24787 /20:44578 /21:52046 /22:113060 /23:105252 /24:637589 /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 6817 12628 UNINET, MX 12479 6243 7305 UNI2-AS, ES 11492 3559 4714 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3017 4740 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2431 14224 AMAZON-02, US 30036 2309 2652 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 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) ---------------------------------------------- 1:2453 2:1575 3:973 4:10 5:4948 6:190 7:6 8:1501 9:6 11:172 12:1231 13:568 14:2606 15:413 16:303 17:388 18:913 20:585 21:4 22:188 23:8126 24:2559 25:2 27:2801 29:19 31:3388 32:31 33:1 34:81 35:285 36:4569 37:4568 38:9307 39:1176 40:452 41:4443 42:2059 43:2837 44:405 45:19457 46:5102 47:377 49:2148 50:2049 51:597 52:1560 54:288 55:1098 56:11 57:304 58:2294 59:1313 60:1185 61:3040 62:3097 63:1750 64:5946 65:2125 66:5895 67:3248 68:1488 69:4173 70:1023 71:627 72:3007 74:2919 75:1519 76:599 77:2763 78:1916 79:1777 80:2298 81:2086 82:3811 83:1465 84:2028 85:3639 86:1102 87:2158 88:1333 89:4603 90:849 91:8432 92:2844 93:3013 94:4213 95:4567 96:1451 97:312 98:958 99:773 100:68 101:1200 102:4304 103:32230 104:5506 105:804 106:903 107:2805 108:1198 109:4247 110:2284 111:3886 112:2767 113:1905 114:2092 115:2284 116:2130 117:3091 118:3082 119:2038 120:2368 121:1512 122:2943 123:2296 124:1601 125:2902 126:125 128:1616 129:967 130:1512 131:2252 132:772 133:462 134:1613 135:389 136:1501 137:1338 138:2878 139:1598 140:1728 141:1546 142:2315 143:2123 144:1329 145:633 146:2189 147:2166 148:2783 149:2884 150:1306 151:2649 152:2281 153:680 154:9300 155:2240 156:4154 157:2209 158:1453 159:2675 160:3749 161:1992 162:3999 163:2323 164:1960 165:2599 166:1307 167:2139 168:3877 169:791 170:5436 171:1111 172:4498 173:3422 174:906 175:1339 176:3765 177:4691 178:4306 179:2323 180:2814 181:4321 182:3831 183:2583 184:2059 185:21731 186:5473 187:4769 188:4423 189:4473 190:9705 191:1541 192:11456 193:9526 194:7845 195:5605 196:3258 197:3199 198:6233 199:6095 200:8212 201:6371 202:10413 203:10587 204:4633 205:3724 206:4420 207:3906 208:4258 209:5451 210:4773 211:2648 212:4899 213:4021 214:1041 215:52 216:7119 217:3350 218:1579 219:403 220:2196 221:1279 222:764 223:3133 End of report