IPv4 R&E Routing Table Report 21:10 GMT Sat 17 Jan, 2026 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: 1026021 Prefixes after maximum aggregation (per Origin AS): 394775 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506765 Number of IPv4 prefixes with a valid ROA: 609106 Number of IPv4 prefixes with an invalid ROA: 115 Number of IPv4 prefixes with no ROA: 416797 Total ASes present in the Internet Routing Table: 77744 Prefixes per ASN: 13.20 Origin-only ASes present in the Internet Routing Table: 66557 Origin ASes announcing only one prefix: 27181 Transit ASes present in the Internet Routing Table: 11187 Transit-only ASes present in the Internet Routing Table: 566 Paths with bogon ASNs present in the IPv4 Routing Table: 18 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: 988 Number of instances of unregistered ASNs: 1030 Number of 32-bit ASNs allocated by the RIRs: 48411 Number of 32-bit ASNs visible in the Routing Table: 39636 Prefixes from 32-bit ASNs in the Routing Table: 220021 Number of bogon 32-bit ASNs visible in the Routing Table: 94 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 476 Number of addresses announced to Internet: 3105429504 Equivalent to 185 /8s, 25 /16s and 24 /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: 334537 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279232 Total APNIC prefixes after maximum aggregation: 81773 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 265835 Unique aggregates announced from the APNIC address blocks: 106858 APNIC Region origin ASes present in the Internet Routing Table: 14997 APNIC Prefixes per ASN: 17.73 APNIC Region origin ASes announcing only one prefix: 4588 APNIC Region transit ASes present in the Internet Routing Table: 2008 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 33 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10559 Number of APNIC addresses announced to Internet: 753514496 Equivalent to 44 /8s, 233 /16s and 184 /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: 300999 Total ARIN prefixes after maximum aggregation: 135043 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301280 Unique aggregates announced from the ARIN address blocks: 146111 ARIN Region origin ASes present in the Internet Routing Table: 19399 ARIN Prefixes per ASN: 15.53 ARIN Region origin ASes announcing only one prefix: 7071 ARIN Region transit ASes present in the Internet Routing Table: 1982 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: 5448 Number of ARIN addresses announced to Internet: 1344379136 Equivalent to 80 /8s, 33 /16s and 153 /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: 282577 Total RIPE prefixes after maximum aggregation: 139916 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284255 Unique aggregates announced from the RIPE address blocks: 184528 RIPE Region origin ASes present in the Internet Routing Table: 29108 RIPE Prefixes per ASN: 9.77 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 4048 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12918 Number of RIPE addresses announced to Internet: 733533184 Equivalent to 43 /8s, 184 /16s and 212 /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: 125873 Total LACNIC prefixes after maximum aggregation: 30454 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121695 Unique aggregates announced from the LACNIC address blocks: 49711 LACNIC Region origin ASes present in the Internet Routing Table: 11342 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2685 LACNIC Region transit ASes present in the Internet Routing Table: 2554 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: 9341 Number of LACNIC addresses announced to Internet: 170537216 Equivalent to 10 /8s, 42 /16s and 49 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 36352 Total AfriNIC prefixes after maximum aggregation: 6917 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 52479 Unique aggregates announced from the AfriNIC address blocks: 19153 AfriNIC Region origin ASes present in the Internet Routing Table: 2006 AfriNIC Prefixes per ASN: 26.16 AfriNIC Region origin ASes announcing only one prefix: 746 AfriNIC Region transit ASes present in the Internet Routing Table: 387 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: 1370 Number of AfriNIC addresses announced to Internet: 103180800 Equivalent to 6 /8s, 38 /16s and 106 /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 13502 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4683 543 338 BBIL-AP BHARTI Airtel Ltd., IN 18403 4450 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4052 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3415 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3316 1868 96 VNPT-AS-VN VNPT Corp, VN 24560 2959 865 498 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2827 177 560 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 14032 38738 5434 AMAZON-02, US 11492 4635 308 1031 CABLEONE, US 22773 4498 3098 300 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3697 1321 70 SHAW, CA 396982 3326 4868 497 GOOGLE-CLOUD-PLATFORM, US 749 3145 54729 2396 DNIC-AS-00749, US 174 3132 8766 833 COGENT-174, US 16625 2949 1274 2170 AKAMAI-AS, US 36352 2696 222 898 AS-COLOCROSSING, 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 7241 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3943 3393 112 AKAMAI-ASN1, NL 9009 3905 365 2231 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2573 183 1870 CDNEXT, GB 34984 2424 372 576 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 203020 1628 244 800 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 12679 3300 603 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2486 508 350 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 11664 1367 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1254 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 358 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 1982 638 33 RAYA-AS, EG 36992 1842 1534 340 ETISALAT-MISR, EG 24863 1276 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1146 524 47 Vodafone-, EG 37069 1099 1084 13 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 571 82 3 KENET-AS, KE 328608 569 53 163 Africa-on-Cloud-AS, ZA 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 14032 38738 5434 AMAZON-02, US 9808 13502 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12679 3300 603 UNINET, MX 12479 7241 1711 149 UNI2-AS, ES 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4683 543 338 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 22773 4498 3098 300 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4450 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 13502 13382 CHINAMOBILE-CN China Mobile Communications Grou 8151 12679 12076 UNINET, MX 12479 7241 7092 UNI2-AS, ES 7545 6028 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4450 4426 FPT-AS-AP FPT Telecom Company, VN 9498 4683 4345 BBIL-AP BHARTI Airtel Ltd., IN 22773 4498 4198 ASN-CXA-ALL-CCI-22773-RDC, US 7552 4052 4023 VIETEL-AS-AP Viettel Group, VN 20940 3943 3831 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 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, 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 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4, US 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 3257 GTT-BACKBONE GTT, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 23.140.216.0/24 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 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 /10:40 /11:93 /12:302 /13:582 /14:1204 /15:2094 /16:13692 /17:8237 /18:13525 /19:24851 /20:44797 /21:52135 /22:113430 /23:106310 /24:644698 /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 6860 12679 UNINET, MX 12479 6172 7241 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3479 3697 SHAW, CA 22773 3051 4498 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2486 14032 AMAZON-02, US 30036 2318 2660 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2489 2:1537 3:978 4:9 5:4996 6:185 7:6 8:1501 9:14 11:172 12:1226 13:621 14:2635 15:414 16:179 17:390 18:918 20:595 21:4 22:188 23:8196 24:2671 25:2 27:2832 29:19 31:3407 32:31 34:81 35:290 36:4625 37:4518 38:9875 39:1246 40:439 41:4485 42:1991 43:2946 44:414 45:19531 46:4933 47:402 49:2159 50:2068 51:598 52:1254 54:235 55:1077 56:11 57:310 58:2317 59:1344 60:1171 61:3094 62:3118 63:1770 64:6171 65:2138 66:6005 67:3270 68:1491 69:4231 70:1023 71:626 72:3059 74:2959 75:1517 76:605 77:2748 78:1919 79:1795 80:2290 81:2084 82:4015 83:1482 84:2025 85:3669 86:1093 87:2215 88:1351 89:4621 90:827 91:8411 92:2856 93:3016 94:4271 95:4525 96:1466 97:313 98:956 99:780 100:69 101:1560 102:4358 103:32355 104:5439 105:790 106:908 107:2823 108:1225 109:4232 110:2302 111:4051 112:3076 113:1931 114:2165 115:2308 116:2160 117:3285 118:2984 119:2087 120:2585 121:1522 122:2959 123:2312 124:1605 125:2947 126:125 128:1616 129:960 130:1564 131:2261 132:772 133:461 134:1626 135:534 136:1632 137:1423 138:2992 139:1617 140:1762 141:1562 142:2470 143:2123 144:1554 145:631 146:2199 147:2280 148:2817 149:2913 150:1314 151:2596 152:2270 153:914 154:9453 155:2267 156:4335 157:2257 158:1492 159:2743 160:3736 161:2001 162:4011 163:2334 164:1966 165:2641 166:1302 167:2191 168:3923 169:852 170:5442 171:1118 172:4571 173:3432 174:893 175:1337 176:3773 177:4710 178:4253 179:2291 180:2968 181:4356 182:3888 183:2747 184:2042 185:21706 186:5525 187:4826 188:4603 189:4490 190:9659 191:1515 192:11465 193:9492 194:7831 195:5675 196:3262 197:3181 198:6247 199:6115 200:8181 201:6376 202:10597 203:10640 204:4703 205:3750 206:4415 207:3964 208:4394 209:5498 210:4790 211:2683 212:4960 213:4047 214:1057 215:54 216:7158 217:3463 218:1621 219:419 220:2188 221:1313 222:877 223:3267 End of report