IPv4 R&E Routing Table Report 21:10 GMT Sun 18 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: 1026552 Prefixes after maximum aggregation (per Origin AS): 394857 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506959 Number of IPv4 prefixes with a valid ROA: 611778 Number of IPv4 prefixes with an invalid ROA: 110 Number of IPv4 prefixes with no ROA: 414664 Total ASes present in the Internet Routing Table: 77766 Prefixes per ASN: 13.20 Origin-only ASes present in the Internet Routing Table: 66573 Origin ASes announcing only one prefix: 27182 Transit ASes present in the Internet Routing Table: 11193 Transit-only ASes present in the Internet Routing Table: 566 Paths with bogon ASNs present in the IPv4 Routing Table: 18 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: 990 Number of instances of unregistered ASNs: 1032 Number of 32-bit ASNs allocated by the RIRs: 48432 Number of 32-bit ASNs visible in the Routing Table: 39645 Prefixes from 32-bit ASNs in the Routing Table: 220104 Number of bogon 32-bit ASNs visible in the Routing Table: 94 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 465 Number of addresses announced to Internet: 3105792512 Equivalent to 185 /8s, 30 /16s and 162 /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: 334758 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279332 Total APNIC prefixes after maximum aggregation: 81822 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 265871 Unique aggregates announced from the APNIC address blocks: 106918 APNIC Region origin ASes present in the Internet Routing Table: 15003 APNIC Prefixes per ASN: 17.72 APNIC Region origin ASes announcing only one prefix: 4589 APNIC Region transit ASes present in the Internet Routing Table: 2010 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 34 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10565 Number of APNIC addresses announced to Internet: 753511936 Equivalent to 44 /8s, 233 /16s and 174 /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: 301050 Total ARIN prefixes after maximum aggregation: 135066 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301341 Unique aggregates announced from the ARIN address blocks: 146141 ARIN Region origin ASes present in the Internet Routing Table: 19400 ARIN Prefixes per ASN: 15.53 ARIN Region origin ASes announcing only one prefix: 7071 ARIN Region transit ASes present in the Internet Routing Table: 1986 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: 1344446464 Equivalent to 80 /8s, 34 /16s and 160 /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: 282981 Total RIPE prefixes after maximum aggregation: 139911 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284742 Unique aggregates announced from the RIPE address blocks: 184636 RIPE Region origin ASes present in the Internet Routing Table: 29121 RIPE Prefixes per ASN: 9.78 RIPE Region origin ASes announcing only one prefix: 12089 RIPE Region transit ASes present in the Internet Routing Table: 4050 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: 12917 Number of RIPE addresses announced to Internet: 733819648 Equivalent to 43 /8s, 189 /16s and 51 /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: 125944 Total LACNIC prefixes after maximum aggregation: 30464 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121766 Unique aggregates announced from the LACNIC address blocks: 49718 LACNIC Region origin ASes present in the Internet Routing Table: 11339 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2682 LACNIC Region transit ASes present in the Internet Routing Table: 2553 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: 9338 Number of LACNIC addresses announced to Internet: 170530304 Equivalent to 10 /8s, 42 /16s and 22 /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: 36255 Total AfriNIC prefixes after maximum aggregation: 6922 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52366 Unique aggregates announced from the AfriNIC address blocks: 19149 AfriNIC Region origin ASes present in the Internet Routing Table: 2011 AfriNIC Prefixes per ASN: 26.04 AfriNIC Region origin ASes announcing only one prefix: 751 AfriNIC Region transit ASes present in the Internet Routing Table: 385 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: 1376 Number of AfriNIC addresses announced to Internet: 103205888 Equivalent to 6 /8s, 38 /16s and 204 /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 13502 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4683 543 338 BBIL-AP BHARTI Airtel Ltd., IN 18403 4440 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4052 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3415 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3316 1868 96 VNPT-AS-VN VNPT Corp, VN 24560 2959 865 498 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2808 176 555 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 14023 38705 5429 AMAZON-02, US 11492 4635 308 1031 CABLEONE, US 22773 4498 3098 300 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3697 1321 70 SHAW, CA 396982 3326 4868 497 GOOGLE-CLOUD-PLATFORM, US 749 3145 54729 2396 DNIC-AS-00749, US 174 3132 8766 833 COGENT-174, US 16625 2949 1274 2170 AKAMAI-AS, US 36352 2696 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 7243 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3943 3393 112 AKAMAI-ASN1, NL 9009 3905 365 2231 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2571 183 1868 CDNEXT, GB 34984 2425 364 577 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 203020 1628 244 800 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 12679 3300 603 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2475 507 355 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 11664 1367 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1257 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 358 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 1841 1532 339 ETISALAT-MISR, EG 24863 1280 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1144 522 45 Vodafone-, EG 37069 1099 1084 13 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 328608 569 53 163 Africa-on-Cloud-AS, ZA 36914 567 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 14023 38705 5429 AMAZON-02, US 9808 13502 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12679 3300 603 UNINET, MX 12479 7243 1711 149 UNI2-AS, ES 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4683 543 338 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 22773 4498 3098 300 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4440 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 13502 13382 CHINAMOBILE-CN China Mobile Communications Grou 8151 12679 12076 UNINET, MX 12479 7243 7094 UNI2-AS, ES 7545 6028 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4440 4416 FPT-AS-AP FPT Telecom Company, VN 9498 4683 4345 BBIL-AP BHARTI Airtel Ltd., IN 22773 4498 4198 ASN-CXA-ALL-CCI-22773-RDC, US 7552 4052 4023 VIETEL-AS-AP Viettel Group, VN 20940 3943 3831 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 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 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3, 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 /14:1204 /15:2093 /16:13700 /17:8249 /18:13542 /19:24863 /20:44883 /21:52183 /22:113497 /23:106338 /24:644952 /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 6860 12679 UNINET, MX 12479 6174 7243 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3479 3697 SHAW, CA 22773 3051 4498 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2485 14023 AMAZON-02, US 30036 2318 2660 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) ---------------------------------------------- 1:2490 2:1540 3:977 4:9 5:5001 6:185 7:6 8:1501 9:14 11:172 12:1227 13:621 14:2635 15:414 16:179 17:390 18:917 20:596 21:4 22:188 23:8191 24:2671 25:2 27:2832 29:19 31:3423 32:31 34:81 35:290 36:4625 37:4524 38:9876 39:1245 40:439 41:4448 42:1983 43:2946 44:414 45:19513 46:4942 47:402 48:20 49:2191 50:2067 51:598 52:1254 54:235 55:1074 56:11 57:310 58:2315 59:1344 60:1171 61:3094 62:3109 63:1771 64:6175 65:2134 66:6006 67:3271 68:1488 69:4233 70:1023 71:626 72:3059 74:2960 75:1517 76:605 77:2751 78:1924 79:1800 80:2295 81:2121 82:4019 83:1484 84:2027 85:3674 86:1094 87:2218 88:1351 89:4629 90:827 91:8416 92:2856 93:3015 94:4272 95:4525 96:1469 97:313 98:956 99:780 100:69 101:1560 102:4357 103:32359 104:5443 105:788 106:908 107:2823 108:1225 109:4230 110:2302 111:4051 112:3076 113:1932 114:2165 115:2308 116:2160 117:3284 118:2984 119:2087 120:2584 121:1522 122:2959 123:2312 124:1605 125:2947 126:125 128:1616 129:951 130:1563 131:2295 132:767 133:461 134:1626 135:534 136:1631 137:1425 138:2993 139:1617 140:1762 141:1564 142:2465 143:2128 144:1555 145:631 146:2200 147:2282 148:2814 149:2915 150:1315 151:2608 152:2274 153:914 154:9417 155:2277 156:4325 157:2259 158:1496 159:2745 160:3730 161:2002 162:4018 163:2338 164:1967 165:2645 166:1301 167:2193 168:3916 169:860 170:5443 171:1118 172:4570 173:3430 174:893 175:1343 176:3774 177:4705 178:4275 179:2288 180:2968 181:4360 182:3888 183:2747 184:2031 185:21711 186:5531 187:4827 188:4607 189:4487 190:9678 191:1515 192:11466 193:9490 194:7846 195:5683 196:3265 197:3178 198:6248 199:6118 200:8197 201:6385 202:10625 203:10641 204:4704 205:3747 206:4415 207:3964 208:4392 209:5499 210:4789 211:2683 212:4965 213:4047 214:1057 215:54 216:7158 217:3463 218:1621 219:419 220:2188 221:1311 222:877 223:3268 End of report