IPv4 R&E Routing Table Report 21:10 GMT Fri 16 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: 1025624 Prefixes after maximum aggregation (per Origin AS): 394807 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506691 Number of IPv4 prefixes with a valid ROA: 611123 Number of IPv4 prefixes with an invalid ROA: 114 Number of IPv4 prefixes with no ROA: 414387 Total ASes present in the Internet Routing Table: 77779 Prefixes per ASN: 13.19 Origin-only ASes present in the Internet Routing Table: 66585 Origin ASes announcing only one prefix: 27191 Transit ASes present in the Internet Routing Table: 11194 Transit-only ASes present in the Internet Routing Table: 572 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: 987 Number of instances of unregistered ASNs: 1029 Number of 32-bit ASNs allocated by the RIRs: 48399 Number of 32-bit ASNs visible in the Routing Table: 39658 Prefixes from 32-bit ASNs in the Routing Table: 219308 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: 480 Number of addresses announced to Internet: 3105302272 Equivalent to 185 /8s, 23 /16s and 39 /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: 334241 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279211 Total APNIC prefixes after maximum aggregation: 81763 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 265818 Unique aggregates announced from the APNIC address blocks: 106892 APNIC Region origin ASes present in the Internet Routing Table: 14998 APNIC Prefixes per ASN: 17.72 APNIC Region origin ASes announcing only one prefix: 4584 APNIC Region transit ASes present in the Internet Routing Table: 2011 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 34 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10559 Number of APNIC addresses announced to Internet: 753528576 Equivalent to 44 /8s, 233 /16s and 239 /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: 301403 Total ARIN prefixes after maximum aggregation: 135133 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301274 Unique aggregates announced from the ARIN address blocks: 146058 ARIN Region origin ASes present in the Internet Routing Table: 19408 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7079 ARIN Region transit ASes present in the Internet Routing Table: 1984 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: 5453 Number of ARIN addresses announced to Internet: 1344310528 Equivalent to 80 /8s, 32 /16s and 141 /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: 281836 Total RIPE prefixes after maximum aggregation: 139748 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283747 Unique aggregates announced from the RIPE address blocks: 184073 RIPE Region origin ASes present in the Internet Routing Table: 29119 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12090 RIPE Region transit ASes present in the Internet Routing Table: 4049 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: 12930 Number of RIPE addresses announced to Internet: 733470208 Equivalent to 43 /8s, 183 /16s and 222 /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: 125826 Total LACNIC prefixes after maximum aggregation: 30582 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121629 Unique aggregates announced from the LACNIC address blocks: 49826 LACNIC Region origin ASes present in the Internet Routing Table: 11347 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2689 LACNIC Region transit ASes present in the Internet Routing Table: 2558 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: 9344 Number of LACNIC addresses announced to Internet: 170504704 Equivalent to 10 /8s, 41 /16s and 178 /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: 36361 Total AfriNIC prefixes after maximum aggregation: 6909 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 52675 Unique aggregates announced from the AfriNIC address blocks: 19434 AfriNIC Region origin ASes present in the Internet Routing Table: 2009 AfriNIC Prefixes per ASN: 26.22 AfriNIC Region origin ASes announcing only one prefix: 749 AfriNIC Region transit ASes present in the Internet Routing Table: 384 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: 1372 Number of AfriNIC addresses announced to Internet: 103197952 Equivalent to 6 /8s, 38 /16s and 173 /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 13501 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4679 543 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4403 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 3321 1868 96 VNPT-AS-VN VNPT Corp, VN 24560 2959 865 498 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2808 176 555 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 14062 38738 5433 AMAZON-02, US 22773 4780 3115 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4635 308 1031 CABLEONE, 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 3130 8766 833 COGENT-174, US 16625 2949 1274 2170 AKAMAI-AS, US 36352 2703 222 899 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 7240 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3943 3393 112 AKAMAI-ASN1, NL 9009 3906 365 2232 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2573 183 1870 CDNEXT, GB 34984 2425 372 577 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 8551 1383 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet 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 12674 3300 603 UNINET, MX 10620 3433 457 1108 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 1256 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 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 1850 1534 342 ETISALAT-MISR, EG 24863 1276 389 16 LINKdotNET-AS, EG 36903 1230 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 576 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 14062 38738 5433 AMAZON-02, US 9808 13501 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12674 3300 603 UNINET, MX 12479 7240 1711 149 UNI2-AS, ES 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4780 3115 366 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4679 543 340 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 18403 4403 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 13501 13381 CHINAMOBILE-CN China Mobile Communications Grou 8151 12674 12071 UNINET, MX 12479 7240 7091 UNI2-AS, ES 7545 6028 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4780 4414 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4403 4379 FPT-AS-AP FPT Telecom Company, VN 9498 4679 4339 BBIL-AP BHARTI Airtel Ltd., IN 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 /16:13691 /17:8240 /18:13510 /19:24842 /20:44770 /21:52116 /22:113341 /23:106219 /24:644549 /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 6855 12674 UNINET, MX 12479 6171 7240 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3479 3697 SHAW, CA 22773 3051 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2492 14062 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 2:1523 3:975 4:9 5:4990 6:185 7:6 8:1502 9:14 11:172 12:1226 13:625 14:2639 15:419 16:203 17:390 18:917 20:595 21:4 22:188 23:8191 24:2671 25:2 27:2832 29:19 31:3398 32:31 34:81 35:290 36:4625 37:4513 38:9879 39:1247 40:439 41:4506 42:1944 43:2945 44:416 45:19578 46:4930 47:403 49:2159 50:2066 51:598 52:1254 54:235 55:1115 56:11 57:311 58:2291 59:1343 60:1171 61:3094 62:3113 63:1769 64:6172 65:2140 66:6000 67:3271 68:1491 69:4229 70:1023 71:626 72:3058 74:2955 75:1517 76:605 77:2750 78:1916 79:1799 80:2286 81:2083 82:4013 83:1477 84:2024 85:3670 86:1094 87:2213 88:1351 89:4604 90:827 91:8410 92:2845 93:3015 94:4266 95:4525 96:1458 97:313 98:956 99:783 100:69 101:1548 102:4343 103:32371 104:5415 105:790 106:908 107:2820 108:1227 109:4209 110:2283 111:4052 112:3077 113:1931 114:2165 115:2308 116:2162 117:3283 118:2978 119:2069 120:2584 121:1514 122:2958 123:2312 124:1605 125:2947 126:125 128:1615 129:960 130:1564 131:2291 132:770 133:461 134:1627 135:534 136:1629 137:1424 138:2996 139:1609 140:1766 141:1563 142:2471 143:2130 144:1558 145:631 146:2201 147:2277 148:2818 149:2909 150:1315 151:2597 152:2254 153:914 154:9518 155:2263 156:4435 157:2253 158:1492 159:2744 160:3717 161:1977 162:4002 163:2335 164:1971 165:2640 166:1302 167:2192 168:3925 169:850 170:5441 171:1116 172:4568 173:3430 174:893 175:1344 176:3765 177:4710 178:4254 179:2292 180:2952 181:4354 182:3887 183:2743 184:2042 185:21673 186:5528 187:4813 188:4581 189:4486 190:9657 191:1516 192:11460 193:9472 194:7819 195:5678 196:3264 197:3198 198:6244 199:6128 200:8177 201:6381 202:10624 203:10634 204:4696 205:3757 206:4416 207:3963 208:4394 209:5461 210:4789 211:2685 212:4941 213:4039 214:1068 215:54 216:7153 217:3463 218:1621 219:419 220:2188 221:1313 222:877 223:3269 End of report