IPv4 R&E Routing Table Report 21:10 GMT Sun 11 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: 1024678 Prefixes after maximum aggregation (per Origin AS): 394487 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506025 Number of IPv4 prefixes with a valid ROA: 609582 Number of IPv4 prefixes with an invalid ROA: 118 Number of IPv4 prefixes with no ROA: 414978 Total ASes present in the Internet Routing Table: 77706 Prefixes per ASN: 13.19 Origin-only ASes present in the Internet Routing Table: 66513 Origin ASes announcing only one prefix: 27130 Transit ASes present in the Internet Routing Table: 11193 Transit-only ASes present in the Internet Routing Table: 565 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: 1031 Number of instances of unregistered ASNs: 1072 Number of 32-bit ASNs allocated by the RIRs: 48351 Number of 32-bit ASNs visible in the Routing Table: 39598 Prefixes from 32-bit ASNs in the Routing Table: 219685 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: 544 Number of addresses announced to Internet: 3104142336 Equivalent to 185 /8s, 5 /16s and 116 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 333896 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 278419 Total APNIC prefixes after maximum aggregation: 81467 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 265078 Unique aggregates announced from the APNIC address blocks: 106766 APNIC Region origin ASes present in the Internet Routing Table: 14975 APNIC Prefixes per ASN: 17.70 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: 10540 Number of APNIC addresses announced to Internet: 753184256 Equivalent to 44 /8s, 228 /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: 301035 Total ARIN prefixes after maximum aggregation: 135074 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301142 Unique aggregates announced from the ARIN address blocks: 145808 ARIN Region origin ASes present in the Internet Routing Table: 19391 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: 1982 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: 5448 Number of ARIN addresses announced to Internet: 1343826944 Equivalent to 80 /8s, 25 /16s and 44 /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: 282154 Total RIPE prefixes after maximum aggregation: 139757 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283380 Unique aggregates announced from the RIPE address blocks: 183758 RIPE Region origin ASes present in the Internet Routing Table: 29100 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12072 RIPE Region transit ASes present in the Internet Routing Table: 4041 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: 12904 Number of RIPE addresses announced to Internet: 733046016 Equivalent to 43 /8s, 177 /16s and 101 /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: 125675 Total LACNIC prefixes after maximum aggregation: 30577 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121465 Unique aggregates announced from the LACNIC address blocks: 49788 LACNIC Region origin ASes present in the Internet Routing Table: 11338 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2686 LACNIC Region transit ASes present in the Internet Routing Table: 2570 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: 9339 Number of LACNIC addresses announced to Internet: 170546432 Equivalent to 10 /8s, 42 /16s and 85 /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: 36364 Total AfriNIC prefixes after maximum aggregation: 6922 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 53068 Unique aggregates announced from the AfriNIC address blocks: 19433 AfriNIC Region origin ASes present in the Internet Routing Table: 2004 AfriNIC Prefixes per ASN: 26.48 AfriNIC Region origin ASes announcing only one prefix: 742 AfriNIC Region transit ASes present in the Internet Routing Table: 392 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: 1367 Number of AfriNIC addresses announced to Internet: 103234816 Equivalent to 6 /8s, 39 /16s and 61 /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 4328 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4049 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 14147 38628 5439 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 2571 183 1868 CDNEXT, GB 34984 2424 372 576 TELLCOM-AS, TR 8452 1711 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 12709 3309 592 UNINET, MX 10620 3434 457 1108 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 1375 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 1257 371 22 Telefonica del Peru S.A.A., PE 22884 1055 66 358 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 1849 1534 341 ETISALAT-MISR, EG 24863 1264 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1125 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 556 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 14147 38628 5439 AMAZON-02, US 9808 13405 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12709 3309 592 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 4328 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 12709 12117 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 4328 4304 FPT-AS-AP FPT Telecom Company, VN 7552 4049 4020 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 /14:1203 /15:2097 /16:13682 /17:8236 /18:13511 /19:24834 /20:44803 /21:52051 /22:113251 /23:106028 /24:643934 /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 6883 12709 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 2495 14147 AMAZON-02, US 30036 2308 2649 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) ---------------------------------------------- 1:2477 2:1504 3:990 4:9 5:4982 6:187 7:6 8:1508 9:15 11:172 12:1234 13:612 14:2634 15:418 16:275 17:387 18:917 20:594 21:4 22:188 23:8181 24:2671 25:2 27:2825 29:19 31:3394 32:31 34:81 35:288 36:4614 37:4492 38:9910 39:1237 40:437 41:4495 42:1914 43:2932 44:412 45:19612 46:4989 47:395 49:2158 50:2058 51:598 52:1254 54:233 55:1115 56:11 57:312 58:2294 59:1337 60:1171 61:3096 62:3103 63:1772 64:6128 65:2140 66:6006 67:3268 68:1499 69:4232 70:1023 71:625 72:3071 74:2981 75:1520 76:599 77:2758 78:1910 79:1785 80:2290 81:2085 82:3975 83:1479 84:2033 85:3666 86:1100 87:2202 88:1353 89:4625 90:826 91:8424 92:2838 93:3019 94:4235 95:4528 96:1459 97:312 98:955 99:787 100:69 101:1556 102:4349 103:32315 104:5464 105:793 106:907 107:2814 108:1215 109:4234 110:2298 111:4018 112:2963 113:1933 114:2162 115:2307 116:2147 117:3256 118:2986 119:2082 120:2436 121:1517 122:2957 123:2295 124:1605 125:2946 126:125 128:1607 129:973 130:1563 131:2269 132:768 133:461 134:1635 135:539 136:1610 137:1422 138:2985 139:1608 140:1778 141:1563 142:2445 143:2101 144:1421 145:631 146:2198 147:2167 148:2788 149:2911 150:1315 151:2565 152:2255 153:916 154:9612 155:2313 156:4618 157:2257 158:1491 159:2738 160:3742 161:1991 162:3994 163:2318 164:1967 165:2654 166:1296 167:2198 168:3909 169:817 170:5416 171:1116 172:4584 173:3424 174:894 175:1330 176:3756 177:4699 178:4227 179:2298 180:2968 181:4332 182:3882 183:2697 184:2040 185:21709 186:5505 187:4788 188:4600 189:4476 190:9652 191:1509 192:11465 193:9506 194:7830 195:5670 196:3267 197:3185 198:6241 199:6109 200:8144 201:6388 202:10604 203:10624 204:4695 205:3756 206:4408 207:3975 208:4379 209:5513 210:4787 211:2684 212:4927 213:4041 214:1060 215:54 216:7156 217:3457 218:1618 219:412 220:2187 221:1306 222:876 223:3258 End of report