IPv4 R&E Routing Table Report 21:10 GMT Tue 24 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: 1036604 Prefixes after maximum aggregation (per Origin AS): 397916 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 511121 Number of IPv4 prefixes with a valid ROA: 625144 Number of IPv4 prefixes with an invalid ROA: 97 Number of IPv4 prefixes with no ROA: 411363 Total ASes present in the Internet Routing Table: 78178 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66894 Origin ASes announcing only one prefix: 27298 Transit ASes present in the Internet Routing Table: 11284 Transit-only ASes present in the Internet Routing Table: 588 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: 1045 Number of instances of unregistered ASNs: 1075 Number of 32-bit ASNs allocated by the RIRs: 49061 Number of 32-bit ASNs visible in the Routing Table: 40195 Prefixes from 32-bit ASNs in the Routing Table: 225106 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: 396 Number of addresses announced to Internet: 3107068416 Equivalent to 185 /8s, 50 /16s and 26 /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: 337578 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281566 Total APNIC prefixes after maximum aggregation: 82223 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 268592 Unique aggregates announced from the APNIC address blocks: 107180 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: 4641 APNIC Region transit ASes present in the Internet Routing Table: 2049 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: 10694 Number of APNIC addresses announced to Internet: 751793152 Equivalent to 44 /8s, 207 /16s and 116 /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: 303804 Total ARIN prefixes after maximum aggregation: 135905 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303195 Unique aggregates announced from the ARIN address blocks: 146441 ARIN Region origin ASes present in the Internet Routing Table: 19427 ARIN Prefixes per ASN: 15.61 ARIN Region origin ASes announcing only one prefix: 7097 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: 5537 Number of ARIN addresses announced to Internet: 1348963584 Equivalent to 80 /8s, 103 /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, 393216-404380 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: 286493 Total RIPE prefixes after maximum aggregation: 141459 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 288567 Unique aggregates announced from the RIPE address blocks: 187531 RIPE Region origin ASes present in the Internet Routing Table: 29329 RIPE Prefixes per ASN: 9.84 RIPE Region origin ASes announcing only one prefix: 12140 RIPE Region transit ASes present in the Internet Routing Table: 4061 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: 13203 Number of RIPE addresses announced to Internet: 732354816 Equivalent to 43 /8s, 166 /16s and 217 /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: 126775 Total LACNIC prefixes after maximum aggregation: 30684 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122520 Unique aggregates announced from the LACNIC address blocks: 50256 LACNIC Region origin ASes present in the Internet Routing Table: 11364 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2690 LACNIC Region transit ASes present in the Internet Routing Table: 2595 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: 9383 Number of LACNIC addresses announced to Internet: 170256896 Equivalent to 10 /8s, 37 /16s and 234 /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: 36921 Total AfriNIC prefixes after maximum aggregation: 6969 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53333 Unique aggregates announced from the AfriNIC address blocks: 19367 AfriNIC Region origin ASes present in the Internet Routing Table: 2014 AfriNIC Prefixes per ASN: 26.48 AfriNIC Region origin ASes announcing only one prefix: 730 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: 1378 Number of AfriNIC addresses announced to Internet: 103442944 Equivalent to 6 /8s, 42 /16s and 106 /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 13765 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5953 829 508 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4851 548 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4551 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4046 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 3329 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 3002 861 512 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2815 177 545 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 14512 41221 5587 AMAZON-02 - Amazon.com, Inc., US 22773 4784 3117 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4651 309 1025 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3712 1321 75 SHAW - Shaw Communications, CA 396982 3292 4856 486 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3201 8761 827 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2823 1242 2150 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 7210 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3944 3389 111 AKAMAI-ASN1, NL 9009 3838 356 2252 M247, RO 12389 3151 2320 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2680 194 1964 CDNEXT, GB 34984 2462 366 570 TELLCOM-AS, TR 8452 1709 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 12821 3301 596 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1953 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 1342 770 213 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 1055 2474 93 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 1282 389 16 LINKdotNET-AS, EG 36935 1247 524 47 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 587 154 220 NTT-DATA-Inc, ZA 15399 550 57 61 WANANCHI-, KE 36914 541 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 14512 41221 5587 AMAZON-02 - Amazon.com, Inc., US 9808 13765 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12821 3301 596 UNINET, MX 12479 7210 1711 149 UNI2-AS, ES 7545 5953 829 508 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4851 548 317 BBIL-AP BHARTI Airtel Ltd., IN 22773 4784 3117 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4651 309 1025 CABLEONE - CABLE ONE, INC., US 18403 4551 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 13765 13645 CHINAMOBILE-CN China Mobile Communications Grou 8151 12821 12225 UNINET, MX 12479 7210 7061 UNI2-AS, ES 7545 5953 5445 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 9498 4851 4534 BBIL-AP BHARTI Airtel Ltd., IN 18403 4551 4526 FPT-AS-AP FPT Telecom Company, VN 22773 4784 4417 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4046 4017 VIETEL-AS-AP Viettel Group, VN 20940 3944 3833 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 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3 - Level 3 Parent 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 /15:2104 /16:13600 /17:8297 /18:13318 /19:25418 /20:45754 /21:52315 /22:113854 /23:107306 /24:652393 /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 6982 12821 UNINET, MX 12479 6152 7210 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3512 4651 CABLEONE - CABLE ONE, INC., US 6327 3493 3712 SHAW - Shaw Communications, CA 22773 3053 4784 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2602 14512 AMAZON-02 - Amazon.com, Inc., US 30036 2320 2669 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3453 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) ---------------------------------------------- 1:2478 2:1707 3:1002 4:5 5:5108 6:196 7:6 8:1502 9:38 11:172 12:1191 13:659 14:2667 15:459 16:169 17:421 18:916 20:603 21:4 22:188 23:8258 24:2839 25:2 27:2830 28:2 29:19 31:3405 32:36 34:86 35:293 36:4642 37:4477 38:9972 39:1273 40:412 41:4564 42:2210 43:3013 44:446 45:19770 46:4899 47:407 48:99 49:2184 50:2034 51:614 52:1305 54:279 55:1117 56:11 57:320 58:2331 59:1352 60:1175 61:3119 62:3126 63:1756 64:6230 65:2122 66:6032 67:3243 68:1497 69:4214 70:1049 71:614 72:3142 74:2996 75:1487 76:592 77:2888 78:1923 79:1792 80:2330 81:2212 82:4016 83:1439 84:2091 85:3828 86:1095 87:2305 88:1349 89:4704 90:794 91:8419 92:2840 93:3007 94:4315 95:4628 96:1444 97:315 98:944 99:803 100:68 101:1461 102:4490 103:32438 104:5334 105:820 106:924 107:2839 108:1225 109:4218 110:2292 111:4108 112:3160 113:1969 114:2264 115:2327 116:2173 117:3490 118:2996 119:2068 120:2692 121:1556 122:2985 123:2268 124:1642 125:2983 126:125 128:1696 129:970 130:1614 131:2469 132:809 133:463 134:1642 135:608 136:1587 137:1547 138:3170 139:1648 140:1755 141:1676 142:2520 143:2105 144:1704 145:628 146:2202 147:2171 148:2713 149:3070 150:1339 151:2716 152:2313 153:1037 154:9472 155:2318 156:4377 157:2278 158:1512 159:2814 160:3821 161:1953 162:4018 163:2442 164:2036 165:2630 166:1300 167:2252 168:3992 169:890 170:5525 171:1117 172:4556 173:3468 174:885 175:1366 176:3819 177:4780 178:4345 179:2351 180:3028 181:4464 182:4007 183:2837 184:2012 185:21825 186:5729 187:4922 188:4559 189:4508 190:9779 191:1561 192:11473 193:9587 194:7841 195:5797 196:3310 197:3228 198:6273 199:6094 200:8218 201:6397 202:10716 203:10651 204:4750 205:3796 206:4523 207:3994 208:4380 209:5456 210:4779 211:2686 212:4985 213:4124 214:1056 215:46 216:7251 217:3544 218:1694 219:418 220:2200 221:1310 222:926 223:3388 End of report