IPv4 R&E Routing Table Report 21:10 GMT Thu 15 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: 1026777 Prefixes after maximum aggregation (per Origin AS): 394977 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 507039 Number of IPv4 prefixes with a valid ROA: 611866 Number of IPv4 prefixes with an invalid ROA: 114 Number of IPv4 prefixes with no ROA: 414797 Total ASes present in the Internet Routing Table: 77752 Prefixes per ASN: 13.21 Origin-only ASes present in the Internet Routing Table: 66570 Origin ASes announcing only one prefix: 27165 Transit ASes present in the Internet Routing Table: 11182 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: 979 Number of instances of unregistered ASNs: 1020 Number of 32-bit ASNs allocated by the RIRs: 48386 Number of 32-bit ASNs visible in the Routing Table: 39634 Prefixes from 32-bit ASNs in the Routing Table: 219948 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: 519 Number of addresses announced to Internet: 3105834496 Equivalent to 185 /8s, 31 /16s and 70 /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: 334458 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279545 Total APNIC prefixes after maximum aggregation: 81816 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 265820 Unique aggregates announced from the APNIC address blocks: 106892 APNIC Region origin ASes present in the Internet Routing Table: 14991 APNIC Prefixes per ASN: 17.73 APNIC Region origin ASes announcing only one prefix: 4583 APNIC Region transit ASes present in the Internet Routing Table: 2007 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: 10553 Number of APNIC addresses announced to Internet: 753566208 Equivalent to 44 /8s, 234 /16s and 130 /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: 301383 Total ARIN prefixes after maximum aggregation: 135106 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301404 Unique aggregates announced from the ARIN address blocks: 145921 ARIN Region origin ASes present in the Internet Routing Table: 19400 ARIN Prefixes per ASN: 15.54 ARIN Region origin ASes announcing only one prefix: 7072 ARIN Region transit ASes present in the Internet Routing Table: 1984 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: 5447 Number of ARIN addresses announced to Internet: 1344525056 Equivalent to 80 /8s, 35 /16s and 211 /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: 282623 Total RIPE prefixes after maximum aggregation: 139925 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284256 Unique aggregates announced from the RIPE address blocks: 184527 RIPE Region origin ASes present in the Internet Routing Table: 29114 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12083 RIPE Region transit ASes present in the Internet Routing Table: 4047 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: 12919 Number of RIPE addresses announced to Internet: 733672192 Equivalent to 43 /8s, 186 /16s and 243 /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: 125891 Total LACNIC prefixes after maximum aggregation: 30569 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121696 Unique aggregates announced from the LACNIC address blocks: 49796 LACNIC Region origin ASes present in the Internet Routing Table: 11343 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2680 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: 9342 Number of LACNIC addresses announced to Internet: 170502912 Equivalent to 10 /8s, 41 /16s and 171 /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: 36356 Total AfriNIC prefixes after maximum aggregation: 6898 AfriNIC Deaggregation factor: 5.27 Prefixes being announced from the AfriNIC address blocks: 53081 Unique aggregates announced from the AfriNIC address blocks: 19456 AfriNIC Region origin ASes present in the Internet Routing Table: 2009 AfriNIC Prefixes per ASN: 26.42 AfriNIC Region origin ASes announcing only one prefix: 747 AfriNIC Region transit ASes present in the Internet Routing Table: 388 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: 1373 Number of AfriNIC addresses announced to Internet: 103272192 Equivalent to 6 /8s, 39 /16s and 207 /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 13499 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4679 543 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4439 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 3323 1868 96 VNPT-AS-VN VNPT Corp, VN 17561 3158 198 615 LCS-AS-AP LARUS Limited, HK 24560 2955 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 14163 38740 5444 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 3697 1321 70 SHAW, CA 396982 3325 4868 496 GOOGLE-CLOUD-PLATFORM, US 749 3144 54729 2395 DNIC-AS-00749, US 174 3141 8767 846 COGENT-174, US 16625 2949 1274 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 7240 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3943 3393 112 AKAMAI-ASN1, NL 9009 3907 365 2233 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2573 183 1870 CDNEXT, GB 34984 2425 372 577 TELLCOM-AS, TR 8452 1716 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 12653 3300 602 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2485 508 350 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 1057 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 1276 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1146 524 47 Vodafone-, EG 37069 1099 1084 13 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 571 82 3 KENET-AS, KE 328608 569 53 163 Africa-on-Cloud-AS, ZA 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 38740 5444 AMAZON-02, US 9808 13499 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12653 3300 602 UNINET, MX 12479 7240 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 4679 543 340 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 18403 4439 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 13499 13379 CHINAMOBILE-CN China Mobile Communications Grou 8151 12653 12051 UNINET, MX 12479 7240 7091 UNI2-AS, ES 7545 6028 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4439 4415 FPT-AS-AP FPT Telecom Company, VN 22773 4780 4414 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4679 4339 BBIL-AP BHARTI Airtel Ltd., IN 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 /15:2096 /16:13691 /17:8243 /18:13513 /19:24861 /20:44811 /21:52152 /22:113450 /23:106251 /24:645457 /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 6836 12653 UNINET, MX 12479 6171 7240 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3479 3697 SHAW, CA 22773 3051 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2507 14163 AMAZON-02, US 30036 2315 2657 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) ---------------------------------------------- 1:2485 2:1521 3:979 4:9 5:4998 6:187 7:6 8:1498 9:14 11:172 12:1225 13:634 14:2633 15:417 16:275 17:390 18:917 20:595 21:4 22:188 23:8184 24:2672 25:2 27:2827 29:19 31:3407 32:31 34:81 35:290 36:4625 37:4515 38:9886 39:1246 40:434 41:4511 42:1990 43:2942 44:416 45:19642 46:4987 47:393 49:2159 50:2065 51:598 52:1253 54:235 55:1109 56:11 57:312 58:2298 59:1344 60:1171 61:3094 62:3114 63:1772 64:6170 65:2136 66:6005 67:3270 68:1492 69:4229 70:1023 71:625 72:3058 74:2945 75:1517 76:605 77:2756 78:1919 79:1800 80:2292 81:2082 82:4013 83:1481 84:2026 85:3674 86:1096 87:2216 88:1351 89:4627 90:827 91:8422 92:2857 93:3017 94:4268 95:4521 96:1461 97:312 98:957 99:786 100:69 101:1558 102:4337 103:32346 104:5437 105:789 106:906 107:2821 108:1217 109:4217 110:2305 111:4048 112:3061 113:1933 114:2165 115:2310 116:2159 117:3284 118:2992 119:2085 120:2585 121:1522 122:2958 123:2310 124:1604 125:2947 126:125 128:1615 129:945 130:1562 131:2296 132:769 133:461 134:1627 135:534 136:1628 137:1426 138:3001 139:1614 140:1767 141:1557 142:2470 143:2140 144:1545 145:629 146:2201 147:2281 148:2815 149:2914 150:1316 151:2594 152:2257 153:914 154:9637 155:2295 156:4637 157:2260 158:1492 159:2742 160:3740 161:1998 162:4003 163:2333 164:1968 165:2649 166:1300 167:2202 168:3916 169:845 170:5440 171:1118 172:4566 173:3429 174:893 175:1344 176:3776 177:4698 178:4244 179:2293 180:2968 181:4352 182:3887 183:2746 184:2043 185:21720 186:5526 187:4806 188:4593 189:4480 190:9675 191:1519 192:11460 193:9502 194:7837 195:5682 196:3262 197:3197 198:6251 199:6128 200:8197 201:6364 202:10622 203:10638 204:4701 205:3746 206:4398 207:3963 208:4394 209:5497 210:4790 211:2683 212:4962 213:4046 214:1064 215:54 216:7155 217:3461 218:1621 219:419 220:2186 221:1311 222:876 223:3271 End of report