IPv4 R&E Routing Table Report 21:10 GMT Fri 12 Dec, 2025 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: 1020501 Prefixes after maximum aggregation (per Origin AS): 393760 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504872 Number of IPv4 prefixes with a valid ROA: 603140 Number of IPv4 prefixes with an invalid ROA: 120 Number of IPv4 prefixes with no ROA: 417241 Total ASes present in the Internet Routing Table: 77634 Prefixes per ASN: 13.15 Origin-only ASes present in the Internet Routing Table: 66413 Origin ASes announcing only one prefix: 27155 Transit ASes present in the Internet Routing Table: 11221 Transit-only ASes present in the Internet Routing Table: 572 Paths with bogon ASNs present in the IPv4 Routing Table: 17 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: 988 Number of instances of unregistered ASNs: 1029 Number of 32-bit ASNs allocated by the RIRs: 48180 Number of 32-bit ASNs visible in the Routing Table: 39468 Prefixes from 32-bit ASNs in the Routing Table: 218515 Number of bogon 32-bit ASNs visible in the Routing Table: 92 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 756 Number of addresses announced to Internet: 3104649984 Equivalent to 185 /8s, 13 /16s and 51 /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: 333133 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275285 Total APNIC prefixes after maximum aggregation: 80705 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262330 Unique aggregates announced from the APNIC address blocks: 106303 APNIC Region origin ASes present in the Internet Routing Table: 14910 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4554 APNIC Region transit ASes present in the Internet Routing Table: 2005 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10479 Number of APNIC addresses announced to Internet: 752921600 Equivalent to 44 /8s, 224 /16s and 172 /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: 299956 Total ARIN prefixes after maximum aggregation: 134943 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300190 Unique aggregates announced from the ARIN address blocks: 145828 ARIN Region origin ASes present in the Internet Routing Table: 19379 ARIN Prefixes per ASN: 15.49 ARIN Region origin ASes announcing only one prefix: 7092 ARIN Region transit ASes present in the Internet Routing Table: 1983 Average ARIN Region AS path length visible: 3.9 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5430 Number of ARIN addresses announced to Internet: 1342402304 Equivalent to 80 /8s, 3 /16s and 111 /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: 282656 Total RIPE prefixes after maximum aggregation: 139951 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283443 Unique aggregates announced from the RIPE address blocks: 183712 RIPE Region origin ASes present in the Internet Routing Table: 29126 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12084 RIPE Region transit ASes present in the Internet Routing Table: 4059 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12870 Number of RIPE addresses announced to Internet: 735161600 Equivalent to 43 /8s, 209 /16s and 173 /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: 125765 Total LACNIC prefixes after maximum aggregation: 30529 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121675 Unique aggregates announced from the LACNIC address blocks: 49750 LACNIC Region origin ASes present in the Internet Routing Table: 11320 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2685 LACNIC Region transit ASes present in the Internet Routing Table: 2579 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: 9329 Number of LACNIC addresses announced to Internet: 170503168 Equivalent to 10 /8s, 41 /16s and 172 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35851 Total AfriNIC prefixes after maximum aggregation: 6963 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 52106 Unique aggregates announced from the AfriNIC address blocks: 18663 AfriNIC Region origin ASes present in the Internet Routing Table: 1999 AfriNIC Prefixes per ASN: 26.07 AfriNIC Region origin ASes announcing only one prefix: 740 AfriNIC Region transit ASes present in the Internet Routing Table: 387 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: 1360 Number of AfriNIC addresses announced to Internet: 103294976 Equivalent to 6 /8s, 40 /16s and 40 /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 13280 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6037 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4605 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4403 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3334 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3316 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 2945 863 513 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2529 159 568 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 14163 38434 5412 AMAZON-02, US 22773 4781 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4684 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3316 4863 490 GOOGLE-CLOUD-PLATFORM, US 749 3207 54744 2458 DNIC-AS-00749, US 16625 2982 1280 2178 AKAMAI-AS, US 36352 2813 229 913 AS-COLOCROSSING, US 174 2679 8770 865 COGENT-174, 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 7286 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3969 3394 123 AKAMAI-ASN1, NL 9009 3941 368 2256 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2545 181 1845 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1686 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 12681 3293 585 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2514 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1374 2432 267 Claro NXT Telecomunicacoes Ltda, BR 11664 1362 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1337 768 219 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1023 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 1926 368 14 RAYA-AS, EG 36992 1684 1509 399 ETISALAT-MISR, EG 24863 1259 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1083 1084 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1036 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 545 82 3 KENET-AS, KE 15399 540 56 54 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 14163 38434 5412 AMAZON-02, US 9808 13280 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12681 3293 585 UNINET, MX 12479 7286 1711 149 UNI2-AS, ES 7545 6037 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4781 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4684 311 949 CABLEONE, US 9498 4605 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4403 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 13280 13162 CHINAMOBILE-CN China Mobile Communications Grou 8151 12681 12096 UNINET, MX 12479 7286 7137 UNI2-AS, ES 7545 6037 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4781 4412 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4403 4379 FPT-AS-AP FPT Telecom Company, VN 9498 4605 4266 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 20940 3969 3846 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 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, 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 7018 ATT-INTERNET4, 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 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 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 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 /13:582 /14:1204 /15:2098 /16:13679 /17:8227 /18:13500 /19:24807 /20:44758 /21:52112 /22:112964 /23:105530 /24:640576 /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 6873 12681 UNINET, MX 12479 6217 7286 UNI2-AS, ES 11492 3529 4684 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3050 4781 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2416 14163 AMAZON-02, US 30036 2319 2662 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) ---------------------------------------------- 1:2440 2:1569 3:962 4:10 5:4958 6:189 7:6 8:1500 9:6 11:172 12:1231 13:542 14:2609 15:415 16:298 17:387 18:913 20:587 21:4 22:188 23:8128 24:2607 25:2 27:2819 29:19 31:3387 32:31 33:1 34:81 35:287 36:4595 37:4550 38:9950 39:1194 40:432 41:4449 42:1974 43:2858 44:415 45:19546 46:5104 47:394 49:2156 50:2059 51:596 52:1543 54:289 55:1114 56:11 57:303 58:2295 59:1328 60:1171 61:3057 62:3104 63:1746 64:5992 65:2121 66:5895 67:3248 68:1493 69:4218 70:1021 71:627 72:3052 74:2950 75:1521 76:597 77:2775 78:1928 79:1791 80:2303 81:2082 82:3857 83:1473 84:2029 85:3642 86:1108 87:2177 88:1343 89:4586 90:834 91:8431 92:2840 93:3019 94:4240 95:4561 96:1463 97:312 98:950 99:778 100:68 101:1329 102:4302 103:32226 104:5491 105:794 106:913 107:2814 108:1204 109:4224 110:2305 111:3921 112:2785 113:1883 114:2100 115:2308 116:2154 117:3130 118:2979 119:2057 120:2382 121:1511 122:2948 123:2295 124:1603 125:2905 126:125 128:1617 129:961 130:1541 131:2240 132:769 133:462 134:1634 135:537 136:1502 137:1423 138:2994 139:1599 140:1776 141:1553 142:2425 143:2115 144:1359 145:634 146:2192 147:2144 148:2792 149:2948 150:1311 151:2609 152:2279 153:863 154:9279 155:2274 156:4343 157:2238 158:1477 159:2705 160:3749 161:2003 162:3990 163:2332 164:1977 165:2628 166:1304 167:2156 168:3928 169:809 170:5439 171:1115 172:4544 173:3423 174:903 175:1333 176:3767 177:4714 178:4297 179:2282 180:2827 181:4334 182:3844 183:2622 184:2059 185:21687 186:5521 187:4778 188:4452 189:4488 190:9692 191:1534 192:11456 193:9516 194:7855 195:5618 196:3303 197:3166 198:6227 199:6103 200:8213 201:6397 202:10481 203:10569 204:4657 205:3741 206:4422 207:3943 208:4303 209:5459 210:4779 211:2678 212:4901 213:4032 214:1060 215:53 216:7098 217:3388 218:1596 219:403 220:2191 221:1288 222:776 223:3184 End of report