IPv4 R&E Routing Table Report 21:10 GMT Tue 13 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: 1026205 Prefixes after maximum aggregation (per Origin AS): 394998 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506897 Number of IPv4 prefixes with a valid ROA: 611201 Number of IPv4 prefixes with an invalid ROA: 117 Number of IPv4 prefixes with no ROA: 414887 Total ASes present in the Internet Routing Table: 77740 Prefixes per ASN: 13.20 Origin-only ASes present in the Internet Routing Table: 66553 Origin ASes announcing only one prefix: 27147 Transit ASes present in the Internet Routing Table: 11187 Transit-only ASes present in the Internet Routing Table: 571 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: 1016 Number of instances of unregistered ASNs: 1056 Number of 32-bit ASNs allocated by the RIRs: 48355 Number of 32-bit ASNs visible in the Routing Table: 39617 Prefixes from 32-bit ASNs in the Routing Table: 219624 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: 548 Number of addresses announced to Internet: 3105389056 Equivalent to 185 /8s, 24 /16s and 122 /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: 334387 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279237 Total APNIC prefixes after maximum aggregation: 81797 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 265550 Unique aggregates announced from the APNIC address blocks: 106869 APNIC Region origin ASes present in the Internet Routing Table: 14993 APNIC Prefixes per ASN: 17.71 APNIC Region origin ASes announcing only one prefix: 4573 APNIC Region transit ASes present in the Internet Routing Table: 2013 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 33 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10556 Number of APNIC addresses announced to Internet: 753258496 Equivalent to 44 /8s, 229 /16s and 208 /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: 301188 Total ARIN prefixes after maximum aggregation: 135112 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301244 Unique aggregates announced from the ARIN address blocks: 145846 ARIN Region origin ASes present in the Internet Routing Table: 19399 ARIN Prefixes per ASN: 15.53 ARIN Region origin ASes announcing only one prefix: 7074 ARIN Region transit ASes present in the Internet Routing Table: 1987 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: 5449 Number of ARIN addresses announced to Internet: 1344400384 Equivalent to 80 /8s, 33 /16s and 236 /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: 282744 Total RIPE prefixes after maximum aggregation: 139905 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284342 Unique aggregates announced from the RIPE address blocks: 184461 RIPE Region origin ASes present in the Internet Routing Table: 29107 RIPE Prefixes per ASN: 9.77 RIPE Region origin ASes announcing only one prefix: 12077 RIPE Region transit ASes present in the Internet Routing Table: 4046 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: 12912 Number of RIPE addresses announced to Internet: 733796096 Equivalent to 43 /8s, 188 /16s and 215 /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: 125939 Total LACNIC prefixes after maximum aggregation: 30624 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121734 Unique aggregates announced from the LACNIC address blocks: 49838 LACNIC Region origin ASes present in the Internet Routing Table: 11341 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2687 LACNIC Region transit ASes present in the Internet Routing Table: 2558 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: 9336 Number of LACNIC addresses announced to Internet: 170540800 Equivalent to 10 /8s, 42 /16s and 63 /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: 36081 Total AfriNIC prefixes after maximum aggregation: 6884 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52786 Unique aggregates announced from the AfriNIC address blocks: 19407 AfriNIC Region origin ASes present in the Internet Routing Table: 1998 AfriNIC Prefixes per ASN: 26.42 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 389 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1364 Number of AfriNIC addresses announced to Internet: 103088384 Equivalent to 6 /8s, 37 /16s and 1 /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 13475 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4673 543 337 BBIL-AP BHARTI Airtel Ltd., IN 18403 4318 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4053 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3731 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3406 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3329 1868 97 VNPT-AS-VN VNPT Corp, VN 17561 3154 198 614 LCS-AS-AP LARUS Limited, HK 24560 2956 865 498 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 14150 38739 5431 AMAZON-02, US 22773 4780 3115 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4635 308 1031 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3695 1321 70 SHAW, CA 396982 3323 4868 496 GOOGLE-CLOUD-PLATFORM, US 174 3170 8735 845 COGENT-174, US 749 3144 54729 2395 DNIC-AS-00749, US 16625 2956 1277 2170 AKAMAI-AS, US 36352 2700 222 899 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 7259 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3941 3393 112 AKAMAI-ASN1, NL 9009 3921 366 2244 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2572 183 1869 CDNEXT, GB 34984 2425 372 577 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 203020 1622 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 12729 3310 593 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2485 507 353 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1374 2430 272 Claro NXT Telecomunicacoes Ltda, BR 11664 1365 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1258 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 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 1850 1534 342 ETISALAT-MISR, EG 24863 1264 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1137 524 47 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 569 53 163 Africa-on-Cloud-AS, ZA 36914 559 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 14150 38739 5431 AMAZON-02, US 9808 13475 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12729 3310 593 UNINET, MX 12479 7259 1711 149 UNI2-AS, ES 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4780 3115 366 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4673 543 337 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 18403 4318 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 13475 13355 CHINAMOBILE-CN China Mobile Communications Grou 8151 12729 12136 UNINET, MX 12479 7259 7110 UNI2-AS, ES 7545 6028 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4780 4414 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4673 4336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4318 4294 FPT-AS-AP FPT Telecom Company, VN 7552 4053 4024 VIETEL-AS-AP Viettel Group, VN 20940 3941 3829 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 395476 UNALLOCATED 12.36.194.0/24 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 /10:40 /11:93 /12:302 /13:582 /14:1203 /15:2096 /16:13690 /17:8245 /18:13517 /19:24864 /20:44853 /21:52152 /22:113476 /23:106222 /24:644839 /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 6898 12729 UNINET, MX 12479 6190 7259 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3478 3695 SHAW, CA 22773 3051 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2498 14150 AMAZON-02, US 30036 2308 2650 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2474 2:1524 3:989 4:9 5:4994 6:187 7:6 8:1505 9:15 11:172 12:1228 13:627 14:2640 15:417 16:275 17:389 18:916 20:595 21:4 22:188 23:8182 24:2673 25:2 27:2826 29:19 31:3416 32:31 34:81 35:288 36:4613 37:4516 38:9930 39:1243 40:432 41:4486 42:1908 43:2932 44:415 45:19629 46:4994 47:395 49:2157 50:2065 51:598 52:1250 54:231 55:1115 56:11 57:312 58:2293 59:1338 60:1171 61:3093 62:3108 63:1772 64:6120 65:2141 66:6011 67:3270 68:1497 69:4234 70:1025 71:625 72:3072 74:2963 75:1520 76:600 77:2761 78:1917 79:1797 80:2293 81:2078 82:4008 83:1480 84:2035 85:3675 86:1097 87:2221 88:1353 89:4625 90:824 91:8420 92:2865 93:3015 94:4262 95:4527 96:1462 97:312 98:956 99:789 100:69 101:1556 102:4284 103:32340 104:5458 105:788 106:907 107:2816 108:1214 109:4205 110:2302 111:4042 112:3060 113:1928 114:2165 115:2306 116:2153 117:3277 118:2982 119:2080 120:2583 121:1521 122:2957 123:2304 124:1605 125:2946 126:125 128:1607 129:962 130:1562 131:2278 132:765 133:461 134:1633 135:539 136:1613 137:1347 138:2997 139:1614 140:1772 141:1566 142:2471 143:2137 144:1435 145:631 146:2202 147:2275 148:2797 149:2910 150:1319 151:2589 152:2257 153:917 154:9621 155:2307 156:4619 157:2251 158:1492 159:2741 160:3737 161:2003 162:4001 163:2332 164:1968 165:2650 166:1300 167:2201 168:3923 169:840 170:5446 171:1118 172:4579 173:3422 174:894 175:1346 176:3773 177:4685 178:4247 179:2299 180:2968 181:4346 182:3884 183:2731 184:2030 185:21734 186:5501 187:4809 188:4590 189:4484 190:9658 191:1523 192:11457 193:9508 194:7832 195:5677 196:3222 197:3187 198:6251 199:6114 200:8171 201:6403 202:10615 203:10633 204:4704 205:3735 206:4405 207:3969 208:4378 209:5509 210:4788 211:2684 212:4935 213:4045 214:1065 215:54 216:7149 217:3472 218:1622 219:412 220:2187 221:1307 222:876 223:3262 End of report