IPv4 R&E Routing Table Report 21:10 GMT Sun 04 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: 1023873 Prefixes after maximum aggregation (per Origin AS): 394155 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506216 Number of IPv4 prefixes with a valid ROA: 609894 Number of IPv4 prefixes with an invalid ROA: 123 Number of IPv4 prefixes with no ROA: 413856 Total ASes present in the Internet Routing Table: 77682 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66480 Origin ASes announcing only one prefix: 27125 Transit ASes present in the Internet Routing Table: 11202 Transit-only ASes present in the Internet Routing Table: 566 Paths with bogon ASNs present in the IPv4 Routing Table: 16 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: 939 Number of instances of unregistered ASNs: 979 Number of 32-bit ASNs allocated by the RIRs: 48318 Number of 32-bit ASNs visible in the Routing Table: 39535 Prefixes from 32-bit ASNs in the Routing Table: 219534 Number of bogon 32-bit ASNs visible in the Routing Table: 90 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 528 Number of addresses announced to Internet: 3104469248 Equivalent to 185 /8s, 10 /16s and 113 /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: 334567 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277295 Total APNIC prefixes after maximum aggregation: 81068 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 263898 Unique aggregates announced from the APNIC address blocks: 106632 APNIC Region origin ASes present in the Internet Routing Table: 14952 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4551 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: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10518 Number of APNIC addresses announced to Internet: 752921344 Equivalent to 44 /8s, 224 /16s and 171 /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: 300700 Total ARIN prefixes after maximum aggregation: 134945 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 300897 Unique aggregates announced from the ARIN address blocks: 145762 ARIN Region origin ASes present in the Internet Routing Table: 19396 ARIN Prefixes per ASN: 15.51 ARIN Region origin ASes announcing only one prefix: 7075 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: 5429 Number of ARIN addresses announced to Internet: 1342539776 Equivalent to 80 /8s, 5 /16s and 136 /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: 283131 Total RIPE prefixes after maximum aggregation: 140013 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284261 Unique aggregates announced from the RIPE address blocks: 184240 RIPE Region origin ASes present in the Internet Routing Table: 29122 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12074 RIPE Region transit ASes present in the Internet Routing Table: 4053 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: 12893 Number of RIPE addresses announced to Internet: 735184384 Equivalent to 43 /8s, 210 /16s and 6 /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: 125584 Total LACNIC prefixes after maximum aggregation: 30580 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121415 Unique aggregates announced from the LACNIC address blocks: 49768 LACNIC Region origin ASes present in the Internet Routing Table: 11328 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: 2570 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: 9331 Number of LACNIC addresses announced to Internet: 170311168 Equivalent to 10 /8s, 38 /16s and 190 /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: 36224 Total AfriNIC prefixes after maximum aggregation: 6914 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52873 Unique aggregates announced from the AfriNIC address blocks: 19358 AfriNIC Region origin ASes present in the Internet Routing Table: 2003 AfriNIC Prefixes per ASN: 26.40 AfriNIC Region origin ASes announcing only one prefix: 736 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: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1364 Number of AfriNIC addresses announced to Internet: 103210240 Equivalent to 6 /8s, 38 /16s and 221 /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 13384 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6036 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4656 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4340 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3730 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3396 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3326 1868 97 VNPT-AS-VN VNPT Corp, VN 17561 3128 196 617 LCS-AS-AP LARUS Limited, HK 24560 2958 865 497 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 14068 38463 5427 AMAZON-02, US 22773 4750 3113 375 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3688 1320 82 SHAW, CA 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 174 2985 8768 851 COGENT-174, US 16625 2974 1281 2180 AKAMAI-AS, US 36352 2698 222 897 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 7277 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3946 368 2269 M247, RO 20940 3940 3393 112 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2566 182 1865 CDNEXT, GB 34984 2421 371 574 TELLCOM-AS, TR 8452 1709 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 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 12651 3293 593 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2488 506 351 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 11664 1371 278 31 Techtel LMDS Comunicaciones Interactivas 28573 1370 2430 270 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1260 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 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 1848 1534 341 ETISALAT-MISR, EG 24863 1262 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1109 523 46 Vodafone-, EG 37069 1099 1084 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 328608 558 52 159 Africa-on-Cloud-AS, ZA 36914 552 82 3 KENET-AS, 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 14068 38463 5427 AMAZON-02, US 9808 13384 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12651 3293 593 UNINET, MX 12479 7277 1711 149 UNI2-AS, ES 7545 6036 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4750 3113 375 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 9498 4656 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4340 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 13384 13264 CHINAMOBILE-CN China Mobile Communications Grou 8151 12651 12058 UNINET, MX 12479 7277 7128 UNI2-AS, ES 7545 6036 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4750 4375 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4656 4320 BBIL-AP BHARTI Airtel Ltd., IN 18403 4340 4316 FPT-AS-AP FPT Telecom Company, VN 7552 4056 4027 VIETEL-AS-AP Viettel Group, VN 20940 3940 3828 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 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 21861 UNALLOCATED 12.37.59.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 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 /10:41 /11:93 /12:299 /13:581 /14:1203 /15:2096 /16:13682 /17:8234 /18:13524 /19:24850 /20:44834 /21:52116 /22:113170 /23:106002 /24:643117 /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 6853 12651 UNINET, MX 12479 6208 7277 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3536 4691 CABLEONE, US 6327 3477 3688 SHAW, CA 22773 3055 4750 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2487 14068 AMAZON-02, US 30036 2306 2649 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 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) ---------------------------------------------- 1:2458 2:1551 3:980 4:10 5:4989 6:186 7:6 8:1508 9:15 11:172 12:1234 13:617 14:2629 15:418 16:275 17:385 18:913 20:591 21:4 22:188 23:8161 24:2677 25:2 27:2824 29:19 31:3390 32:31 33:1 34:81 35:286 36:4632 37:4519 38:9867 39:1223 40:437 41:4497 42:1913 43:2908 44:410 45:19593 46:5003 47:396 49:2155 50:2057 51:598 52:1253 54:229 55:1113 56:11 57:309 58:2291 59:1340 60:1171 61:3059 62:3112 63:1770 64:6115 65:2139 66:6012 67:3272 68:1504 69:4236 70:1020 71:625 72:3079 74:2969 75:1521 76:599 77:2747 78:1929 79:1785 80:2304 81:2095 82:3944 83:1476 84:2032 85:3665 86:1101 87:2207 88:1358 89:4629 90:833 91:8437 92:2829 93:3024 94:4264 95:4560 96:1462 97:312 98:957 99:789 100:68 101:1306 102:4316 103:32316 104:5468 105:789 106:921 107:2815 108:1215 109:4260 110:2301 111:4003 112:2877 113:1929 114:2096 115:2309 116:2155 117:3247 118:2985 119:2079 120:2428 121:1519 122:2955 123:2299 124:1605 125:2939 126:125 128:1601 129:962 130:1560 131:2277 132:757 133:462 134:1631 135:539 136:1516 137:1411 138:2983 139:1609 140:1778 141:1556 142:2444 143:2115 144:1407 145:627 146:2195 147:2149 148:2783 149:2922 150:1319 151:2583 152:2259 153:912 154:9492 155:2298 156:4571 157:2254 158:1482 159:2733 160:3749 161:1983 162:4001 163:2334 164:1961 165:2644 166:1304 167:2195 168:3896 169:816 170:5450 171:1117 172:4542 173:3421 174:900 175:1343 176:3784 177:4735 178:4309 179:2291 180:2830 181:4337 182:3873 183:2679 184:2055 185:21748 186:5503 187:4782 188:4608 189:4466 190:9649 191:1522 192:11447 193:9516 194:7866 195:5643 196:3265 197:3179 198:6236 199:6113 200:8151 201:6379 202:10630 203:10622 204:4702 205:3756 206:4424 207:3979 208:4383 209:5501 210:4780 211:2682 212:4941 213:4041 214:1062 215:54 216:7142 217:3459 218:1616 219:410 220:2186 221:1301 222:776 223:3239 End of report