IPv4 R&E Routing Table Report 21:10 GMT Sun 07 Dec, 2025 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: 1018704 Prefixes after maximum aggregation (per Origin AS): 393309 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504313 Number of IPv4 prefixes with a valid ROA: 599425 Number of IPv4 prefixes with an invalid ROA: 122 Number of IPv4 prefixes with no ROA: 419157 Total ASes present in the Internet Routing Table: 77586 Prefixes per ASN: 13.13 Origin-only ASes present in the Internet Routing Table: 66394 Origin ASes announcing only one prefix: 27111 Transit ASes present in the Internet Routing Table: 11192 Transit-only ASes present in the Internet Routing Table: 569 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: 939 Number of instances of unregistered ASNs: 980 Number of 32-bit ASNs allocated by the RIRs: 48170 Number of 32-bit ASNs visible in the Routing Table: 39421 Prefixes from 32-bit ASNs in the Routing Table: 217151 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: 440 Number of addresses announced to Internet: 3099949568 Equivalent to 184 /8s, 197 /16s and 122 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 333256 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274691 Total APNIC prefixes after maximum aggregation: 80745 APNIC Deaggregation factor: 3.40 Prefixes being announced from the APNIC address blocks: 262206 Unique aggregates announced from the APNIC address blocks: 106217 APNIC Region origin ASes present in the Internet Routing Table: 14900 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4543 APNIC Region transit ASes present in the Internet Routing Table: 2005 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10464 Number of APNIC addresses announced to Internet: 752744704 Equivalent to 44 /8s, 221 /16s and 249 /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: 299349 Total ARIN prefixes after maximum aggregation: 134597 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298959 Unique aggregates announced from the ARIN address blocks: 145733 ARIN Region origin ASes present in the Internet Routing Table: 19385 ARIN Prefixes per ASN: 15.42 ARIN Region origin ASes announcing only one prefix: 7099 ARIN Region transit ASes present in the Internet Routing Table: 1988 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: 5427 Number of ARIN addresses announced to Internet: 1337396992 Equivalent to 79 /8s, 183 /16s and 15 /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: 282460 Total RIPE prefixes after maximum aggregation: 139905 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283582 Unique aggregates announced from the RIPE address blocks: 183937 RIPE Region origin ASes present in the Internet Routing Table: 29108 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12057 RIPE Region transit ASes present in the Internet Routing Table: 4052 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: 12858 Number of RIPE addresses announced to Internet: 735795200 Equivalent to 43 /8s, 219 /16s and 88 /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: 125739 Total LACNIC prefixes after maximum aggregation: 30538 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121696 Unique aggregates announced from the LACNIC address blocks: 49746 LACNIC Region origin ASes present in the Internet Routing Table: 11322 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2678 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: 9317 Number of LACNIC addresses announced to Internet: 170681088 Equivalent to 10 /8s, 44 /16s and 99 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35526 Total AfriNIC prefixes after maximum aggregation: 6885 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 51820 Unique aggregates announced from the AfriNIC address blocks: 18300 AfriNIC Region origin ASes present in the Internet Routing Table: 1993 AfriNIC Prefixes per ASN: 26.00 AfriNIC Region origin ASes announcing only one prefix: 734 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: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1355 Number of AfriNIC addresses announced to Internet: 103167232 Equivalent to 6 /8s, 38 /16s and 53 /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 13288 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6046 835 592 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4599 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4412 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4012 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3709 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3337 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3314 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 2949 864 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2515 275 1936 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14284 37210 5410 AMAZON-02, US 22773 4777 3115 372 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3314 4862 488 GOOGLE-CLOUD-PLATFORM, US 749 3208 54760 2459 DNIC-AS-00749, US 16625 3001 1289 2188 AKAMAI-AS, US 36352 2818 231 916 AS-COLOCROSSING, US 174 2673 8768 846 COGENT-174, 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 7287 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3989 375 2284 M247, RO 20940 3980 3395 126 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2540 180 1838 CDNEXT, GB 34984 2424 363 576 TELLCOM-AS, TR 8452 1683 1852 14 TE-AS TE-AS, EG 203020 1614 241 782 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 12655 3291 583 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2508 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2431 267 Claro NXT Telecomunicacoes Ltda, BR 11664 1356 278 33 Techtel LMDS Comunicaciones Interactivas 3816 1347 779 211 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1058 70 360 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 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 1925 368 14 RAYA-AS, EG 36992 1683 1509 399 ETISALAT-MISR, EG 24863 1258 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1093 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1036 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 562 82 3 KENET-AS, KE 15399 550 57 59 WANANCHI-, 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 14284 37210 5410 AMAZON-02, US 9808 13288 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12655 3291 583 UNINET, MX 12479 7287 1711 149 UNI2-AS, ES 7545 6046 835 592 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4777 3115 372 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4599 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4412 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 13288 13168 CHINAMOBILE-CN China Mobile Communications Grou 8151 12655 12072 UNINET, MX 12479 7287 7138 UNI2-AS, ES 7545 6046 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4405 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4412 4388 FPT-AS-AP FPT Telecom Company, VN 9498 4599 4263 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 3984 VIETEL-AS-AP Viettel Group, VN 20940 3980 3854 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 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, 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 7018 ATT-INTERNET4, 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 Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 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 23.141.0.0/24 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 /10:41 /11:94 /12:298 /13:582 /14:1203 /15:2093 /16:13679 /17:8227 /18:13487 /19:24806 /20:44622 /21:52098 /22:113032 /23:105417 /24:638994 /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 6855 12655 UNINET, MX 12479 6217 7287 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3049 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2435 14284 AMAZON-02, US 30036 2318 2661 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 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) ---------------------------------------------- 1:2443 2:1569 3:977 4:10 5:4936 6:190 7:6 8:1500 9:6 11:172 12:1230 13:571 14:2602 15:414 16:303 17:388 18:913 20:587 21:4 22:188 23:8132 24:2611 25:2 27:2814 29:19 31:3391 32:31 33:1 34:81 35:285 36:4596 37:4553 38:9364 39:1194 40:447 41:4431 42:1952 43:2840 44:401 45:19441 46:5108 47:386 49:2149 50:2057 51:597 52:1567 54:289 55:1099 56:11 57:304 58:2291 59:1317 60:1167 61:3044 62:3100 63:1747 64:5966 65:2122 66:5902 67:3237 68:1493 69:4198 70:1020 71:627 72:3042 74:2940 75:1522 76:600 77:2771 78:1917 79:1783 80:2301 81:2099 82:3847 83:1463 84:2034 85:3643 86:1105 87:2171 88:1347 89:4576 90:840 91:8433 92:2852 93:3019 94:4231 95:4564 96:1466 97:312 98:951 99:773 100:68 101:1339 102:4328 103:32233 104:5498 105:789 106:912 107:2808 108:1202 109:4224 110:2266 111:3914 112:2790 113:1925 114:2098 115:2304 116:2155 117:3134 118:3010 119:2040 120:2382 121:1512 122:2947 123:2302 124:1601 125:2905 126:125 128:1615 129:963 130:1523 131:2272 132:772 133:462 134:1626 135:495 136:1503 137:1341 138:2926 139:1596 140:1725 141:1550 142:2343 143:2131 144:1356 145:629 146:2186 147:2143 148:2792 149:2886 150:1306 151:2618 152:2279 153:835 154:9154 155:2257 156:4237 157:2239 158:1474 159:2698 160:3738 161:1994 162:4009 163:2327 164:1963 165:2623 166:1307 167:2150 168:3923 169:805 170:5433 171:1114 172:4535 173:3422 174:908 175:1340 176:3778 177:4736 178:4298 179:2289 180:2836 181:4347 182:3839 183:2619 184:2070 185:21688 186:5517 187:4788 188:4439 189:4506 190:9695 191:1564 192:11455 193:9509 194:7857 195:5619 196:3294 197:3193 198:6219 199:6096 200:8208 201:6389 202:10453 203:10591 204:4644 205:3731 206:4405 207:3926 208:4283 209:5447 210:4773 211:2678 212:4896 213:4016 214:1028 215:53 216:7073 217:3390 218:1593 219:404 220:2187 221:1288 222:776 223:3182 End of report