IPv4 R&E Routing Table Report 21:10 GMT Wed 07 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: 1024366 Prefixes after maximum aggregation (per Origin AS): 394374 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506359 Number of IPv4 prefixes with a valid ROA: 610374 Number of IPv4 prefixes with an invalid ROA: 119 Number of IPv4 prefixes with no ROA: 413873 Total ASes present in the Internet Routing Table: 77716 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66529 Origin ASes announcing only one prefix: 27142 Transit ASes present in the Internet Routing Table: 11187 Transit-only ASes present in the Internet Routing Table: 563 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: 1029 Number of instances of unregistered ASNs: 1069 Number of 32-bit ASNs allocated by the RIRs: 48298 Number of 32-bit ASNs visible in the Routing Table: 39576 Prefixes from 32-bit ASNs in the Routing Table: 219734 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: 544 Number of addresses announced to Internet: 3105622528 Equivalent to 185 /8s, 28 /16s and 10 /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: 334494 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277556 Total APNIC prefixes after maximum aggregation: 81114 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 264203 Unique aggregates announced from the APNIC address blocks: 106736 APNIC Region origin ASes present in the Internet Routing Table: 14967 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4559 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: 10532 Number of APNIC addresses announced to Internet: 753968640 Equivalent to 44 /8s, 240 /16s and 166 /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: 300540 Total ARIN prefixes after maximum aggregation: 135044 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 300727 Unique aggregates announced from the ARIN address blocks: 145655 ARIN Region origin ASes present in the Internet Routing Table: 19374 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7060 ARIN Region transit ASes present in the Internet Routing Table: 1979 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: 1342622720 Equivalent to 80 /8s, 6 /16s and 204 /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: 283178 Total RIPE prefixes after maximum aggregation: 140031 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284360 Unique aggregates announced from the RIPE address blocks: 184317 RIPE Region origin ASes present in the Internet Routing Table: 29132 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12089 RIPE Region transit ASes present in the Internet Routing Table: 4042 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: 12910 Number of RIPE addresses announced to Internet: 735019776 Equivalent to 43 /8s, 207 /16s and 131 /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: 125780 Total LACNIC prefixes after maximum aggregation: 30576 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121577 Unique aggregates announced from the LACNIC address blocks: 49811 LACNIC Region origin ASes present in the Internet Routing Table: 11342 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2693 LACNIC Region transit ASes present in the Internet Routing Table: 2562 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: 9339 Number of LACNIC addresses announced to Internet: 170503680 Equivalent to 10 /8s, 41 /16s and 174 /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: 36283 Total AfriNIC prefixes after maximum aggregation: 6921 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52954 Unique aggregates announced from the AfriNIC address blocks: 19364 AfriNIC Region origin ASes present in the Internet Routing Table: 2005 AfriNIC Prefixes per ASN: 26.41 AfriNIC Region origin ASes announcing only one prefix: 741 AfriNIC Region transit ASes present in the Internet Routing Table: 390 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: 103202816 Equivalent to 6 /8s, 38 /16s and 192 /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 13397 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6029 833 576 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4664 543 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4408 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4057 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3406 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3326 1868 97 VNPT-AS-VN VNPT Corp, VN 17561 3126 196 616 LCS-AS-AP LARUS Limited, HK 24560 2949 863 507 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 14107 38497 5442 AMAZON-02, US 22773 4748 3113 373 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4635 308 1031 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3688 1320 82 SHAW, CA 396982 3324 4868 493 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 174 2992 8768 851 COGENT-174, US 16625 2958 1277 2171 AKAMAI-AS, US 36352 2699 222 898 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 7272 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3947 369 2272 M247, RO 20940 3945 3393 112 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2569 182 1866 CDNEXT, GB 34984 2424 372 576 TELLCOM-AS, TR 8452 1709 1852 14 TE-AS TE-AS, EG 203020 1633 243 799 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 12661 3293 598 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2488 506 351 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1377 2434 263 Claro NXT Telecomunicacoes Ltda, BR 11664 1376 278 31 Techtel LMDS Comunicaciones Interactivas 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 1849 1534 341 ETISALAT-MISR, EG 24863 1264 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 565 52 162 Africa-on-Cloud-AS, ZA 36914 551 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 14107 38497 5442 AMAZON-02, US 9808 13397 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12661 3293 598 UNINET, MX 12479 7272 1711 149 UNI2-AS, ES 7545 6029 833 576 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4748 3113 373 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4664 543 336 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 18403 4408 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 13397 13277 CHINAMOBILE-CN China Mobile Communications Grou 8151 12661 12063 UNINET, MX 12479 7272 7123 UNI2-AS, ES 7545 6029 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4408 4384 FPT-AS-AP FPT Telecom Company, VN 22773 4748 4375 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4664 4328 BBIL-AP BHARTI Airtel Ltd., IN 7552 4057 4028 VIETEL-AS-AP Viettel Group, VN 20940 3945 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, 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 397817 UNALLOCATED 12.25.103.0/24 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 /11:94 /12:302 /13:581 /14:1203 /15:2097 /16:13680 /17:8234 /18:13518 /19:24856 /20:44863 /21:52135 /22:113200 /23:106042 /24:643489 /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 6864 12661 UNINET, MX 12479 6203 7272 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3477 3688 SHAW, CA 22773 3055 4748 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2492 14107 AMAZON-02, US 30036 2305 2646 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) ---------------------------------------------- 1:2465 2:1549 3:981 4:9 5:4993 6:187 7:6 8:1507 9:15 11:172 12:1233 13:619 14:2634 15:418 16:275 17:386 18:915 20:592 21:4 22:188 23:8174 24:2672 25:2 27:2820 29:19 31:3397 32:31 34:81 35:287 36:4640 37:4520 38:9886 39:1234 40:438 41:4502 42:1945 43:2925 44:413 45:19620 46:4991 47:395 49:2159 50:2058 51:598 52:1254 54:229 55:1117 56:11 57:312 58:2293 59:1335 60:1171 61:3061 62:3113 63:1768 64:6134 65:2141 66:5995 67:3269 68:1504 69:4226 70:1018 71:624 72:3065 74:2980 75:1521 76:596 77:2752 78:1924 79:1790 80:2302 81:2098 82:3968 83:1478 84:2034 85:3675 86:1100 87:2210 88:1355 89:4632 90:830 91:8429 92:2840 93:3022 94:4270 95:4547 96:1458 97:312 98:959 99:786 100:69 101:1307 102:4331 103:32346 104:5431 105:788 106:921 107:2814 108:1213 109:4263 110:2304 111:4016 112:2923 113:1932 114:2097 115:2310 116:2153 117:3264 118:3008 119:2079 120:2435 121:1520 122:2957 123:2303 124:1604 125:2944 126:125 128:1607 129:971 130:1564 131:2271 132:768 133:461 134:1635 135:541 136:1550 137:1417 138:2979 139:1615 140:1777 141:1562 142:2447 143:2133 144:1413 145:629 146:2197 147:2156 148:2793 149:2915 150:1319 151:2595 152:2260 153:916 154:9490 155:2312 156:4576 157:2254 158:1486 159:2738 160:3744 161:1998 162:3984 163:2336 164:1962 165:2652 166:1304 167:2200 168:3922 169:813 170:5431 171:1117 172:4542 173:3416 174:896 175:1342 176:3772 177:4708 178:4235 179:2295 180:2827 181:4351 182:3875 183:2713 184:2027 185:21755 186:5504 187:4796 188:4615 189:4472 190:9659 191:1529 192:11451 193:9517 194:7853 195:5685 196:3269 197:3185 198:6230 199:6101 200:8164 201:6376 202:10580 203:10615 204:4687 205:3757 206:4401 207:3971 208:4372 209:5505 210:4782 211:2684 212:4937 213:4040 214:1062 215:54 216:7145 217:3456 218:1618 219:412 220:2188 221:1301 222:776 223:3256 End of report