IPv4 R&E Routing Table Report 21:10 GMT Sun 14 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: 1020029 Prefixes after maximum aggregation (per Origin AS): 393506 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504660 Number of IPv4 prefixes with a valid ROA: 603002 Number of IPv4 prefixes with an invalid ROA: 114 Number of IPv4 prefixes with no ROA: 416913 Total ASes present in the Internet Routing Table: 77657 Prefixes per ASN: 13.14 Origin-only ASes present in the Internet Routing Table: 66425 Origin ASes announcing only one prefix: 27167 Transit ASes present in the Internet Routing Table: 11232 Transit-only ASes present in the Internet Routing Table: 575 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: 975 Number of instances of unregistered ASNs: 1015 Number of 32-bit ASNs allocated by the RIRs: 48215 Number of 32-bit ASNs visible in the Routing Table: 39485 Prefixes from 32-bit ASNs in the Routing Table: 218078 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: 729 Number of addresses announced to Internet: 3104572160 Equivalent to 185 /8s, 12 /16s and 3 /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: 333016 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274967 Total APNIC prefixes after maximum aggregation: 80632 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262068 Unique aggregates announced from the APNIC address blocks: 106164 APNIC Region origin ASes present in the Internet Routing Table: 14928 APNIC Prefixes per ASN: 17.56 APNIC Region origin ASes announcing only one prefix: 4573 APNIC Region transit ASes present in the Internet Routing Table: 2009 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: 10494 Number of APNIC addresses announced to Internet: 752863232 Equivalent to 44 /8s, 223 /16s and 200 /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: 299855 Total ARIN prefixes after maximum aggregation: 134798 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300111 Unique aggregates announced from the ARIN address blocks: 145819 ARIN Region origin ASes present in the Internet Routing Table: 19386 ARIN Prefixes per ASN: 15.48 ARIN Region origin ASes announcing only one prefix: 7097 ARIN Region transit ASes present in the Internet Routing Table: 1988 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: 5431 Number of ARIN addresses announced to Internet: 1342269440 Equivalent to 80 /8s, 1 /16s and 104 /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: 282551 Total RIPE prefixes after maximum aggregation: 139922 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283307 Unique aggregates announced from the RIPE address blocks: 183675 RIPE Region origin ASes present in the Internet Routing Table: 29128 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12086 RIPE Region transit ASes present in the Internet Routing Table: 4060 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: 12877 Number of RIPE addresses announced to Internet: 735217664 Equivalent to 43 /8s, 210 /16s and 136 /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: 125813 Total LACNIC prefixes after maximum aggregation: 30530 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121708 Unique aggregates announced from the LACNIC address blocks: 49758 LACNIC Region origin ASes present in the Internet Routing Table: 11322 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2676 LACNIC Region transit ASes present in the Internet Routing Table: 2577 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: 9328 Number of LACNIC addresses announced to Internet: 170572032 Equivalent to 10 /8s, 42 /16s and 185 /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: 35868 Total AfriNIC prefixes after maximum aggregation: 6964 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 52105 Unique aggregates announced from the AfriNIC address blocks: 18653 AfriNIC Region origin ASes present in the Internet Routing Table: 1994 AfriNIC Prefixes per ASN: 26.13 AfriNIC Region origin ASes announcing only one prefix: 735 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: 1355 Number of AfriNIC addresses announced to Internet: 103290624 Equivalent to 6 /8s, 40 /16s and 23 /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 6040 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4606 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4516 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 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2528 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 14130 38434 5411 AMAZON-02, US 22773 4780 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 2972 1275 2173 AKAMAI-AS, US 36352 2813 229 913 AS-COLOCROSSING, US 174 2677 8770 863 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 7287 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3969 3394 122 AKAMAI-ASN1, NL 9009 3941 368 2256 M247, RO 12389 3153 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2544 181 1844 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 12677 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 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1262 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1022 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 1048 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 561 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 14130 38434 5411 AMAZON-02, US 9808 13280 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12677 3293 585 UNINET, MX 12479 7287 1711 149 UNI2-AS, ES 7545 6040 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4780 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4684 311 949 CABLEONE, US 9498 4606 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4516 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 12677 12092 UNINET, MX 12479 7287 7138 UNI2-AS, ES 7545 6040 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4516 4492 FPT-AS-AP FPT Telecom Company, VN 22773 4780 4411 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4606 4267 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 20940 3969 3847 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 /14:1203 /15:2098 /16:13681 /17:8227 /18:13499 /19:24805 /20:44757 /21:52111 /22:112987 /23:105547 /24:640068 /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 6871 12677 UNINET, MX 12479 6218 7287 UNI2-AS, ES 11492 3529 4684 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3049 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2420 14130 AMAZON-02, US 30036 2323 2666 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) ---------------------------------------------- 1:2428 2:1570 3:967 4:10 5:4951 6:187 7:6 8:1501 9:6 11:172 12:1230 13:542 14:2582 15:415 16:298 17:387 18:911 20:587 21:4 22:188 23:8133 24:2609 25:2 27:2780 29:19 31:3384 32:31 33:1 34:81 35:287 36:4595 37:4528 38:9957 39:1194 40:434 41:4453 42:2047 43:2829 44:415 45:19535 46:5099 47:394 49:2156 50:2061 51:596 52:1508 54:289 55:1076 56:11 57:304 58:2295 59:1331 60:1171 61:3058 62:3103 63:1746 64:5988 65:2115 66:5893 67:3247 68:1490 69:4211 70:1021 71:627 72:3051 74:2936 75:1521 76:597 77:2755 78:1924 79:1789 80:2305 81:2083 82:3855 83:1474 84:2014 85:3646 86:1106 87:2182 88:1342 89:4582 90:834 91:8421 92:2843 93:3019 94:4207 95:4560 96:1461 97:312 98:950 99:778 100:68 101:1328 102:4290 103:32172 104:5495 105:793 106:915 107:2814 108:1206 109:4229 110:2303 111:3921 112:2754 113:1891 114:2100 115:2313 116:2157 117:3118 118:2954 119:2053 120:2381 121:1486 122:2949 123:2294 124:1603 125:2905 126:125 128:1617 129:961 130:1543 131:2239 132:764 133:462 134:1590 135:537 136:1504 137:1404 138:2996 139:1600 140:1777 141:1554 142:2427 143:2080 144:1371 145:629 146:2193 147:2145 148:2792 149:2931 150:1312 151:2602 152:2271 153:859 154:9270 155:2274 156:4355 157:2241 158:1477 159:2718 160:3757 161:2001 162:4000 163:2334 164:1978 165:2622 166:1304 167:2158 168:3926 169:812 170:5440 171:1115 172:4547 173:3424 174:903 175:1341 176:3765 177:4710 178:4298 179:2287 180:2828 181:4334 182:3843 183:2635 184:2058 185:21687 186:5522 187:4776 188:4446 189:4490 190:9692 191:1532 192:11419 193:9514 194:7853 195:5617 196:3303 197:3183 198:6236 199:6102 200:8216 201:6394 202:10442 203:10579 204:4654 205:3759 206:4419 207:3939 208:4303 209:5459 210:4768 211:2679 212:4895 213:4030 214:1061 215:53 216:7101 217:3389 218:1596 219:404 220:2191 221:1288 222:776 223:3176 End of report