IPv4 R&E Routing Table Report 21:10 GMT Sat 10 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: 1025230 Prefixes after maximum aggregation (per Origin AS): 394681 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506365 Number of IPv4 prefixes with a valid ROA: 610090 Number of IPv4 prefixes with an invalid ROA: 118 Number of IPv4 prefixes with no ROA: 415022 Total ASes present in the Internet Routing Table: 77708 Prefixes per ASN: 13.19 Origin-only ASes present in the Internet Routing Table: 66527 Origin ASes announcing only one prefix: 27134 Transit ASes present in the Internet Routing Table: 11181 Transit-only ASes present in the Internet Routing Table: 562 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: 1032 Number of instances of unregistered ASNs: 1072 Number of 32-bit ASNs allocated by the RIRs: 48334 Number of 32-bit ASNs visible in the Routing Table: 39594 Prefixes from 32-bit ASNs in the Routing Table: 219644 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: 549 Number of addresses announced to Internet: 3104694272 Equivalent to 185 /8s, 13 /16s and 224 /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: 334223 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 278484 Total APNIC prefixes after maximum aggregation: 81475 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 265144 Unique aggregates announced from the APNIC address blocks: 106804 APNIC Region origin ASes present in the Internet Routing Table: 14973 APNIC Prefixes per ASN: 17.71 APNIC Region origin ASes announcing only one prefix: 4559 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: 10535 Number of APNIC addresses announced to Internet: 753185792 Equivalent to 44 /8s, 228 /16s and 180 /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: 300995 Total ARIN prefixes after maximum aggregation: 135050 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301124 Unique aggregates announced from the ARIN address blocks: 145810 ARIN Region origin ASes present in the Internet Routing Table: 19386 ARIN Prefixes per ASN: 15.53 ARIN Region origin ASes announcing only one prefix: 7070 ARIN Region transit ASes present in the Internet Routing Table: 1980 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: 5445 Number of ARIN addresses announced to Internet: 1343629568 Equivalent to 80 /8s, 22 /16s and 41 /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: 282721 Total RIPE prefixes after maximum aggregation: 139971 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283957 Unique aggregates announced from the RIPE address blocks: 184077 RIPE Region origin ASes present in the Internet Routing Table: 29119 RIPE Prefixes per ASN: 9.75 RIPE Region origin ASes announcing only one prefix: 12081 RIPE Region transit ASes present in the Internet Routing Table: 4037 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: 12913 Number of RIPE addresses announced to Internet: 733775104 Equivalent to 43 /8s, 188 /16s and 133 /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: 125659 Total LACNIC prefixes after maximum aggregation: 30570 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121441 Unique aggregates announced from the LACNIC address blocks: 49781 LACNIC Region origin ASes present in the Internet Routing Table: 11332 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2683 LACNIC Region transit ASes present in the Internet Routing Table: 2566 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: 9335 Number of LACNIC addresses announced to Internet: 170522624 Equivalent to 10 /8s, 41 /16s and 248 /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: 36339 Total AfriNIC prefixes after maximum aggregation: 6924 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 53014 Unique aggregates announced from the AfriNIC address blocks: 19416 AfriNIC Region origin ASes present in the Internet Routing Table: 2002 AfriNIC Prefixes per ASN: 26.48 AfriNIC Region origin ASes announcing only one prefix: 741 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: 43 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1366 Number of AfriNIC addresses announced to Internet: 103242752 Equivalent to 6 /8s, 39 /16s and 92 /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 13405 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6029 833 576 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4671 543 337 BBIL-AP BHARTI Airtel Ltd., IN 18403 4322 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4058 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3406 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3326 1868 97 VNPT-AS-VN VNPT Corp, VN 17561 3170 199 622 LCS-AS-AP LARUS Limited, HK 24560 2953 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 14162 38629 5444 AMAZON-02, US 22773 4777 3115 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4634 308 1032 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3695 1321 70 SHAW, CA 396982 3325 4868 493 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 174 3131 8767 845 COGENT-174, US 16625 2956 1277 2171 AKAMAI-AS, US 36352 2698 222 897 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 7266 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3943 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 2424 372 576 TELLCOM-AS, TR 8452 1708 1852 14 TE-AS TE-AS, EG 203020 1622 243 799 HOSTROYALE, IN 13188 1603 100 42 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 12700 3307 595 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2485 507 353 Mega Cable, S.A. de C.V., MX 11830 1990 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 11664 1363 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 67 359 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 1849 1534 341 ETISALAT-MISR, EG 24863 1264 389 16 LINKdotNET-AS, EG 36903 1226 553 105 MT-MPLS, MA 36935 1110 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 568 52 163 Africa-on-Cloud-AS, ZA 36914 563 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 14162 38629 5444 AMAZON-02, US 9808 13405 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12700 3307 595 UNINET, MX 12479 7266 1711 149 UNI2-AS, ES 7545 6029 833 576 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4777 3115 366 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4671 543 337 BBIL-AP BHARTI Airtel Ltd., IN 11492 4634 308 1032 CABLEONE, US 18403 4322 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 13405 13285 CHINAMOBILE-CN China Mobile Communications Grou 8151 12700 12105 UNINET, MX 12479 7266 7117 UNI2-AS, ES 7545 6029 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4777 4411 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4671 4334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4322 4298 FPT-AS-AP FPT Telecom Company, VN 7552 4058 4029 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 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 /14:1202 /15:2096 /16:13682 /17:8240 /18:13514 /19:24854 /20:44860 /21:52145 /22:113393 /23:106146 /24:644050 /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 6877 12700 UNINET, MX 12479 6197 7266 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4634 CABLEONE, US 6327 3478 3695 SHAW, CA 22773 3048 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2501 14162 AMAZON-02, US 30036 2308 2649 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) ---------------------------------------------- 1:2477 2:1524 3:990 4:9 5:4991 6:187 7:6 8:1507 9:15 11:172 12:1234 13:615 14:2635 15:418 16:275 17:389 18:917 20:594 21:4 22:188 23:8179 24:2671 25:2 27:2825 29:19 31:3397 32:31 34:81 35:288 36:4614 37:4489 38:9910 39:1237 40:437 41:4507 42:1915 43:2933 44:410 45:19596 46:4996 47:395 49:2158 50:2058 51:598 52:1257 54:233 55:1113 56:11 57:312 58:2294 59:1337 60:1171 61:3096 62:3103 63:1772 64:6127 65:2141 66:6009 67:3269 68:1499 69:4229 70:1023 71:625 72:3069 74:2980 75:1520 76:599 77:2757 78:1920 79:1784 80:2294 81:2085 82:3982 83:1478 84:2035 85:3675 86:1100 87:2212 88:1356 89:4623 90:826 91:8423 92:2838 93:3018 94:4233 95:4523 96:1457 97:312 98:955 99:787 100:69 101:1556 102:4342 103:32344 104:5462 105:793 106:907 107:2814 108:1216 109:4211 110:2300 111:4019 112:2963 113:1926 114:2163 115:2307 116:2147 117:3255 118:2984 119:2079 120:2436 121:1521 122:2957 123:2294 124:1605 125:2946 126:125 128:1609 129:973 130:1561 131:2267 132:769 133:461 134:1635 135:536 136:1611 137:1422 138:2981 139:1609 140:1776 141:1559 142:2446 143:2100 144:1422 145:627 146:2198 147:2168 148:2795 149:2915 150:1315 151:2589 152:2255 153:916 154:9612 155:2317 156:4616 157:2257 158:1491 159:2737 160:3744 161:1991 162:3994 163:2320 164:1966 165:2652 166:1302 167:2199 168:3910 169:814 170:5411 171:1116 172:4581 173:3425 174:894 175:1344 176:3775 177:4696 178:4236 179:2296 180:2969 181:4330 182:3883 183:2701 184:2040 185:21729 186:5503 187:4787 188:4597 189:4475 190:9653 191:1494 192:11462 193:9509 194:7837 195:5669 196:3267 197:3187 198:6237 199:6109 200:8149 201:6387 202:10605 203:10624 204:4696 205:3752 206:4403 207:3975 208:4376 209:5511 210:4787 211:2684 212:4928 213:4039 214:1060 215:54 216:7160 217:3459 218:1618 219:412 220:2186 221:1306 222:876 223:3258 End of report