IPv4 R&E Routing Table Report 21:10 GMT Mon 23 Mar, 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: 1036440 Prefixes after maximum aggregation (per Origin AS): 397762 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 510977 Number of IPv4 prefixes with a valid ROA: 624735 Number of IPv4 prefixes with an invalid ROA: 98 Number of IPv4 prefixes with no ROA: 411607 Total ASes present in the Internet Routing Table: 78177 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66896 Origin ASes announcing only one prefix: 27291 Transit ASes present in the Internet Routing Table: 11281 Transit-only ASes present in the Internet Routing Table: 590 Paths with bogon ASNs present in the IPv4 Routing Table: 9 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: 1047 Number of instances of unregistered ASNs: 1077 Number of 32-bit ASNs allocated by the RIRs: 49057 Number of 32-bit ASNs visible in the Routing Table: 40188 Prefixes from 32-bit ASNs in the Routing Table: 225010 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 397 Number of addresses announced to Internet: 3107178240 Equivalent to 185 /8s, 51 /16s and 199 /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: 337398 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281535 Total APNIC prefixes after maximum aggregation: 82178 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 268607 Unique aggregates announced from the APNIC address blocks: 107165 APNIC Region origin ASes present in the Internet Routing Table: 15138 APNIC Prefixes per ASN: 17.74 APNIC Region origin ASes announcing only one prefix: 4638 APNIC Region transit ASes present in the Internet Routing Table: 2051 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10693 Number of APNIC addresses announced to Internet: 751794176 Equivalent to 44 /8s, 207 /16s and 120 /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: 303782 Total ARIN prefixes after maximum aggregation: 135945 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 303172 Unique aggregates announced from the ARIN address blocks: 146486 ARIN Region origin ASes present in the Internet Routing Table: 19424 ARIN Prefixes per ASN: 15.61 ARIN Region origin ASes announcing only one prefix: 7087 ARIN Region transit ASes present in the Internet Routing Table: 1983 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: 5532 Number of ARIN addresses announced to Internet: 1349030912 Equivalent to 80 /8s, 104 /16s and 148 /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, 393216-404380 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: 286272 Total RIPE prefixes after maximum aggregation: 141354 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 288380 Unique aggregates announced from the RIPE address blocks: 187380 RIPE Region origin ASes present in the Internet Routing Table: 29328 RIPE Prefixes per ASN: 9.83 RIPE Region origin ASes announcing only one prefix: 12143 RIPE Region transit ASes present in the Internet Routing Table: 4058 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 37 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13203 Number of RIPE addresses announced to Internet: 732257280 Equivalent to 43 /8s, 165 /16s and 92 /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: 126877 Total LACNIC prefixes after maximum aggregation: 30643 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122545 Unique aggregates announced from the LACNIC address blocks: 50208 LACNIC Region origin ASes present in the Internet Routing Table: 11367 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2694 LACNIC Region transit ASes present in the Internet Routing Table: 2597 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9386 Number of LACNIC addresses announced to Internet: 170373376 Equivalent to 10 /8s, 39 /16s and 177 /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: 36927 Total AfriNIC prefixes after maximum aggregation: 6964 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53338 Unique aggregates announced from the AfriNIC address blocks: 19391 AfriNIC Region origin ASes present in the Internet Routing Table: 2010 AfriNIC Prefixes per ASN: 26.54 AfriNIC Region origin ASes announcing only one prefix: 729 AfriNIC Region transit ASes present in the Internet Routing Table: 387 Average AfriNIC Region AS path length visible: 5.2 Max AfriNIC Region AS path length visible: 62 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1374 Number of AfriNIC addresses announced to Internet: 103465216 Equivalent to 6 /8s, 42 /16s and 193 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5954 829 510 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 18403 4550 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4033 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3674 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3474 886 176 CMNET-JIANGSU-AP China Mobile communicati 45899 3328 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 3004 862 511 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2817 177 546 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 14515 41223 5588 AMAZON-02 - Amazon.com, Inc., US 22773 4781 3117 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1022 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3710 1321 75 SHAW - Shaw Communications, CA 396982 3292 4856 486 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3187 8763 836 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2839 1248 2155 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2701 221 893 AS-COLOCROSSING - HostPapa, 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 7200 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3945 3389 111 AKAMAI-ASN1, NL 9009 3838 356 2252 M247, RO 12389 3151 2320 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2679 194 1963 CDNEXT, GB 34984 2466 366 568 TELLCOM-AS, TR 8452 1703 1852 14 TE-AS TE-AS, EG 203020 1630 247 806 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 12826 3302 595 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1958 369 65 Instituto Costarricense de Electricidad y 11664 1451 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1372 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1341 770 214 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1244 371 22 INTEGRATEL PERU S.A.A., PE 22884 1057 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1057 2475 94 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 2045 648 34 RAYA-AS, EG 36992 1843 1531 336 ETISALAT-MISR, EG 24863 1286 389 16 LINKdotNET-AS, EG 36935 1247 524 47 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1108 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 587 154 220 NTT-DATA-Inc, ZA 36914 557 82 3 KENET-AS, KE 15399 550 57 61 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 14515 41223 5588 AMAZON-02 - Amazon.com, Inc., US 9808 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12826 3302 595 UNINET, MX 12479 7200 1711 149 UNI2-AS, ES 7545 5954 829 510 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 22773 4781 3117 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1022 CABLEONE - CABLE ONE, INC., US 18403 4550 347 25 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 13760 13640 CHINAMOBILE-CN China Mobile Communications Grou 8151 12826 12231 UNINET, MX 12479 7200 7051 UNI2-AS, ES 7545 5954 5444 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 9498 4850 4528 BBIL-AP BHARTI Airtel Ltd., IN 18403 4550 4525 FPT-AS-AP FPT Telecom Company, VN 22773 4781 4414 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4033 4004 VIETEL-AS-AP Viettel Group, VN 20940 3945 3834 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 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 397665 UNALLOCATED 12.24.28.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 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 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 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 - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, 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 /11:95 /12:297 /13:584 /14:1198 /15:2103 /16:13603 /17:8298 /18:13320 /19:25420 /20:45757 /21:52351 /22:113845 /23:107297 /24:652201 /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 6986 12826 UNINET, MX 12479 6141 7200 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3508 4647 CABLEONE - CABLE ONE, INC., US 6327 3491 3710 SHAW - Shaw Communications, CA 22773 3050 4781 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2605 14515 AMAZON-02 - Amazon.com, Inc., US 30036 2319 2668 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2232 3452 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) ---------------------------------------------- 1:2479 2:1705 3:1002 4:5 5:5122 6:197 7:6 8:1501 9:38 11:172 12:1190 13:659 14:2666 15:459 16:169 17:422 18:918 20:603 21:4 22:188 23:8258 24:2840 25:2 27:2829 28:1 29:19 31:3404 32:36 34:87 35:294 36:4639 37:4465 38:9979 39:1273 40:413 41:4564 42:2209 43:3010 44:446 45:19785 46:4898 47:407 48:99 49:2182 50:2037 51:614 52:1303 54:279 55:1118 56:11 57:319 58:2333 59:1352 60:1175 61:3121 62:3121 63:1756 64:6225 65:2124 66:6025 67:3257 68:1494 69:4208 70:1049 71:613 72:3138 74:2995 75:1488 76:592 77:2887 78:1919 79:1790 80:2332 81:2201 82:4017 83:1440 84:2091 85:3818 86:1095 87:2293 88:1348 89:4696 90:793 91:8425 92:2843 93:3004 94:4315 95:4635 96:1441 97:314 98:947 99:803 100:68 101:1460 102:4480 103:32447 104:5337 105:818 106:924 107:2835 108:1226 109:4205 110:2291 111:4104 112:3152 113:1972 114:2260 115:2326 116:2171 117:3489 118:2995 119:2068 120:2690 121:1555 122:2985 123:2267 124:1642 125:2982 126:125 128:1697 129:943 130:1614 131:2469 132:808 133:462 134:1642 135:607 136:1585 137:1548 138:3173 139:1646 140:1765 141:1646 142:2518 143:2100 144:1700 145:629 146:2205 147:2174 148:2731 149:3044 150:1340 151:2701 152:2312 153:1035 154:9473 155:2318 156:4389 157:2281 158:1506 159:2793 160:3822 161:1956 162:4033 163:2439 164:2036 165:2630 166:1303 167:2253 168:3962 169:895 170:5535 171:1109 172:4557 173:3464 174:884 175:1365 176:3834 177:4776 178:4331 179:2301 180:3029 181:4464 182:4020 183:2836 184:2016 185:21806 186:5715 187:4913 188:4557 189:4516 190:9766 191:1562 192:11472 193:9588 194:7844 195:5791 196:3329 197:3242 198:6272 199:6089 200:8227 201:6406 202:10720 203:10661 204:4748 205:3797 206:4527 207:3998 208:4385 209:5462 210:4779 211:2685 212:4981 213:4124 214:1058 215:46 216:7242 217:3544 218:1693 219:418 220:2199 221:1311 222:926 223:3386 End of report