IPv4 R&E Routing Table Report 21:10 GMT Mon 05 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: 1024033 Prefixes after maximum aggregation (per Origin AS): 394105 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506169 Number of IPv4 prefixes with a valid ROA: 610067 Number of IPv4 prefixes with an invalid ROA: 124 Number of IPv4 prefixes with no ROA: 413842 Total ASes present in the Internet Routing Table: 77687 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66492 Origin ASes announcing only one prefix: 27132 Transit ASes present in the Internet Routing Table: 11195 Transit-only ASes present in the Internet Routing Table: 565 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: 39548 Prefixes from 32-bit ASNs in the Routing Table: 219611 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: 517 Number of addresses announced to Internet: 3104718848 Equivalent to 185 /8s, 14 /16s and 64 /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: 334568 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277273 Total APNIC prefixes after maximum aggregation: 81095 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 263945 Unique aggregates announced from the APNIC address blocks: 106650 APNIC Region origin ASes present in the Internet Routing Table: 14958 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4555 APNIC Region transit ASes present in the Internet Routing Table: 2014 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: 10524 Number of APNIC addresses announced to Internet: 752908800 Equivalent to 44 /8s, 224 /16s and 122 /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: 300668 Total ARIN prefixes after maximum aggregation: 134920 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 300881 Unique aggregates announced from the ARIN address blocks: 145734 ARIN Region origin ASes present in the Internet Routing Table: 19385 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7064 ARIN Region transit ASes present in the Internet Routing Table: 1985 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: 1342665472 Equivalent to 80 /8s, 7 /16s and 115 /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: 283078 Total RIPE prefixes after maximum aggregation: 139962 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284175 Unique aggregates announced from the RIPE address blocks: 184162 RIPE Region origin ASes present in the Internet Routing Table: 29125 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12082 RIPE Region transit ASes present in the Internet Routing Table: 4051 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: 12898 Number of RIPE addresses announced to Internet: 735155712 Equivalent to 43 /8s, 209 /16s and 150 /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: 125827 Total LACNIC prefixes after maximum aggregation: 30568 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121612 Unique aggregates announced from the LACNIC address blocks: 49790 LACNIC Region origin ASes present in the Internet Routing Table: 11335 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2692 LACNIC Region transit ASes present in the Internet Routing Table: 2563 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: 9336 Number of LACNIC addresses announced to Internet: 170482432 Equivalent to 10 /8s, 41 /16s and 91 /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: 36248 Total AfriNIC prefixes after maximum aggregation: 6925 AfriNIC Deaggregation factor: 5.23 Prefixes being announced from the AfriNIC address blocks: 52902 Unique aggregates announced from the AfriNIC address blocks: 19388 AfriNIC Region origin ASes present in the Internet Routing Table: 2004 AfriNIC Prefixes per ASN: 26.40 AfriNIC Region origin ASes announcing only one prefix: 739 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 1366 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 13385 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6031 833 578 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4658 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4345 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3728 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 2952 864 507 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 14051 38463 5426 AMAZON-02, US 22773 4750 3113 375 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4694 311 938 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 2981 8768 851 COGENT-174, US 16625 2967 1280 2175 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 3950 369 2273 M247, RO 20940 3943 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 1710 1852 14 TE-AS TE-AS, EG 203020 1616 242 782 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 12655 3293 592 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 1371 2432 267 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1261 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 1265 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 36914 559 82 3 KENET-AS, KE 328608 558 52 159 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 14051 38463 5426 AMAZON-02, US 9808 13385 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12655 3293 592 UNINET, MX 12479 7277 1711 149 UNI2-AS, ES 7545 6031 833 578 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 4694 311 938 CABLEONE, US 9498 4658 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4345 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 13385 13265 CHINAMOBILE-CN China Mobile Communications Grou 8151 12655 12063 UNINET, MX 12479 7277 7128 UNI2-AS, ES 7545 6031 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4750 4375 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4658 4322 BBIL-AP BHARTI Airtel Ltd., IN 18403 4345 4321 FPT-AS-AP FPT Telecom Company, VN 7552 4056 4027 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 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 /16:13685 /17:8236 /18:13516 /19:24851 /20:44836 /21:52133 /22:113193 /23:106066 /24:643173 /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 6857 12655 UNINET, MX 12479 6208 7277 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3539 4694 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 2479 14051 AMAZON-02, US 30036 2304 2645 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) ---------------------------------------------- 1:2460 2:1549 3:980 4:10 5:4996 6:186 7:6 8:1507 9:15 11:172 12:1234 13:607 14:2634 15:418 16:275 17:385 18:913 20:591 21:4 22:188 23:8168 24:2680 25:2 27:2819 29:19 31:3391 32:31 33:1 34:81 35:287 36:4631 37:4519 38:9883 39:1223 40:437 41:4496 42:1911 43:2920 44:412 45:19607 46:4990 47:395 49:2155 50:2056 51:598 52:1251 54:229 55:1113 56:11 57:308 58:2293 59:1338 60:1171 61:3059 62:3112 63:1770 64:6122 65:2139 66:6008 67:3272 68:1502 69:4233 70:1025 71:624 72:3066 74:2974 75:1520 76:599 77:2751 78:1926 79:1787 80:2303 81:2097 82:3946 83:1476 84:2034 85:3665 86:1100 87:2203 88:1358 89:4629 90:833 91:8431 92:2830 93:3022 94:4268 95:4547 96:1463 97:312 98:957 99:789 100:69 101:1305 102:4334 103:32329 104:5462 105:804 106:920 107:2814 108:1211 109:4248 110:2302 111:4004 112:2919 113:1930 114:2096 115:2308 116:2155 117:3247 118:2990 119:2078 120:2428 121:1519 122:2954 123:2306 124:1605 125:2940 126:125 128:1604 129:962 130:1564 131:2278 132:764 133:461 134:1630 135:539 136:1545 137:1412 138:2981 139:1607 140:1777 141:1558 142:2444 143:2114 144:1410 145:630 146:2196 147:2150 148:2790 149:2916 150:1326 151:2587 152:2256 153:915 154:9499 155:2309 156:4570 157:2255 158:1486 159:2736 160:3750 161:1997 162:3990 163:2334 164:1962 165:2641 166:1302 167:2196 168:3889 169:814 170:5450 171:1117 172:4541 173:3419 174:900 175:1342 176:3786 177:4737 178:4222 179:2291 180:2826 181:4352 182:3873 183:2679 184:2055 185:21758 186:5501 187:4786 188:4613 189:4468 190:9658 191:1527 192:11446 193:9522 194:7853 195:5635 196:3264 197:3191 198:6231 199:6111 200:8158 201:6382 202:10575 203:10626 204:4697 205:3768 206:4426 207:3972 208:4382 209:5496 210:4781 211:2681 212:4938 213:4047 214:1062 215:54 216:7132 217:3458 218:1616 219:410 220:2187 221:1302 222:776 223:3237 End of report