IPv4 R&E Routing Table Report 21:10 GMT Thu 11 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: 1020454 Prefixes after maximum aggregation (per Origin AS): 393602 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504762 Number of IPv4 prefixes with a valid ROA: 603412 Number of IPv4 prefixes with an invalid ROA: 122 Number of IPv4 prefixes with no ROA: 416920 Total ASes present in the Internet Routing Table: 77624 Prefixes per ASN: 13.15 Origin-only ASes present in the Internet Routing Table: 66424 Origin ASes announcing only one prefix: 27133 Transit ASes present in the Internet Routing Table: 11200 Transit-only ASes present in the Internet Routing Table: 574 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: 980 Number of instances of unregistered ASNs: 1021 Number of 32-bit ASNs allocated by the RIRs: 48184 Number of 32-bit ASNs visible in the Routing Table: 39455 Prefixes from 32-bit ASNs in the Routing Table: 218386 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: 757 Number of addresses announced to Internet: 3104550400 Equivalent to 185 /8s, 11 /16s and 174 /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: 333003 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275360 Total APNIC prefixes after maximum aggregation: 80642 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262555 Unique aggregates announced from the APNIC address blocks: 106297 APNIC Region origin ASes present in the Internet Routing Table: 14912 APNIC Prefixes per ASN: 17.61 APNIC Region origin ASes announcing only one prefix: 4543 APNIC Region transit ASes present in the Internet Routing Table: 2000 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10479 Number of APNIC addresses announced to Internet: 752930560 Equivalent to 44 /8s, 224 /16s and 207 /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: 300083 Total ARIN prefixes after maximum aggregation: 134928 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300139 Unique aggregates announced from the ARIN address blocks: 145800 ARIN Region origin ASes present in the Internet Routing Table: 19372 ARIN Prefixes per ASN: 15.49 ARIN Region origin ASes announcing only one prefix: 7088 ARIN Region transit ASes present in the Internet Routing Table: 1982 Average ARIN Region AS path length visible: 3.9 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5429 Number of ARIN addresses announced to Internet: 1342228736 Equivalent to 80 /8s, 0 /16s and 201 /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: 282577 Total RIPE prefixes after maximum aggregation: 139908 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283377 Unique aggregates announced from the RIPE address blocks: 183698 RIPE Region origin ASes present in the Internet Routing Table: 29127 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12086 RIPE Region transit ASes present in the Internet Routing Table: 4057 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: 12864 Number of RIPE addresses announced to Internet: 735163904 Equivalent to 43 /8s, 209 /16s and 182 /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: 125608 Total LACNIC prefixes after maximum aggregation: 30518 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121550 Unique aggregates announced from the LACNIC address blocks: 49739 LACNIC Region origin ASes present in the Internet Routing Table: 11316 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2678 LACNIC Region transit ASes present in the Internet Routing Table: 2569 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: 9324 Number of LACNIC addresses announced to Internet: 170574336 Equivalent to 10 /8s, 42 /16s and 194 /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: 35846 Total AfriNIC prefixes after maximum aggregation: 6938 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 52075 Unique aggregates announced from the AfriNIC address blocks: 18611 AfriNIC Region origin ASes present in the Internet Routing Table: 1997 AfriNIC Prefixes per ASN: 26.08 AfriNIC Region origin ASes announcing only one prefix: 738 AfriNIC Region transit ASes present in the Internet Routing Table: 386 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1359 Number of AfriNIC addresses announced to Internet: 103286528 Equivalent to 6 /8s, 40 /16s and 7 /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 13283 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6040 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4606 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4529 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3334 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3316 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 2952 864 500 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 14174 38434 5412 AMAZON-02, US 22773 4780 3116 369 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 3316 4863 490 GOOGLE-CLOUD-PLATFORM, US 749 3207 54744 2458 DNIC-AS-00749, US 16625 2997 1288 2187 AKAMAI-AS, US 36352 2813 229 913 AS-COLOCROSSING, US 174 2670 8769 861 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 20940 3969 3394 123 AKAMAI-ASN1, NL 9009 3939 368 2255 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2540 181 1840 CDNEXT, GB 34984 2421 363 575 TELLCOM-AS, TR 8452 1681 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 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 12680 3296 584 UNINET, MX 10620 3432 457 1107 Telmex Colombia S.A., CO 13999 2511 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1374 2432 267 Claro NXT Telecomunicacoes Ltda, BR 11664 1361 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1020 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 1926 368 14 RAYA-AS, EG 36992 1685 1509 399 ETISALAT-MISR, EG 24863 1260 389 20 LINKdotNET-AS, EG 36903 1249 554 96 MT-MPLS, MA 37069 1083 1084 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1046 519 29 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 567 82 3 KENET-AS, KE 15399 545 57 58 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 14174 38434 5412 AMAZON-02, US 9808 13283 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12680 3296 584 UNINET, MX 12479 7287 1711 149 UNI2-AS, ES 7545 6040 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4780 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4606 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4529 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 13283 13165 CHINAMOBILE-CN China Mobile Communications Grou 8151 12680 12096 UNINET, MX 12479 7287 7138 UNI2-AS, ES 7545 6040 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4529 4505 FPT-AS-AP FPT Telecom Company, VN 22773 4780 4411 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4606 4270 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 20940 3969 3846 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 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, 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 /11:93 /12:299 /13:582 /14:1204 /15:2097 /16:13681 /17:8228 /18:13495 /19:24798 /20:44756 /21:52110 /22:112953 /23:105539 /24:640547 /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 6872 12680 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 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2423 14174 AMAZON-02, US 30036 2321 2664 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3432 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) ---------------------------------------------- 1:2442 2:1567 3:965 4:10 5:4954 6:190 7:6 8:1501 9:6 11:172 12:1231 13:539 14:2609 15:413 16:298 17:388 18:912 20:587 21:4 22:188 23:8128 24:2611 25:2 27:2817 29:19 31:3388 32:31 33:1 34:81 35:287 36:4598 37:4553 38:9915 39:1194 40:430 41:4452 42:2059 43:2853 44:415 45:19546 46:5102 47:393 49:2156 50:2060 51:596 52:1551 54:289 55:1105 56:11 57:305 58:2294 59:1328 60:1171 61:3057 62:3104 63:1746 64:5994 65:2120 66:5889 67:3245 68:1489 69:4202 70:1020 71:627 72:3038 74:2951 75:1520 76:596 77:2774 78:1920 79:1789 80:2302 81:2079 82:3850 83:1473 84:2029 85:3642 86:1108 87:2171 88:1341 89:4582 90:834 91:8426 92:2839 93:3020 94:4240 95:4554 96:1463 97:312 98:951 99:778 100:68 101:1328 102:4321 103:32289 104:5499 105:796 106:915 107:2813 108:1206 109:4241 110:2305 111:3922 112:2785 113:1891 114:2100 115:2306 116:2157 117:3136 118:2997 119:2058 120:2382 121:1511 122:2950 123:2288 124:1602 125:2907 126:125 128:1624 129:963 130:1543 131:2241 132:768 133:462 134:1634 135:524 136:1502 137:1425 138:2988 139:1604 140:1766 141:1554 142:2424 143:2113 144:1376 145:630 146:2193 147:2142 148:2791 149:2880 150:1301 151:2608 152:2275 153:862 154:9289 155:2278 156:4344 157:2238 158:1470 159:2704 160:3755 161:1999 162:4010 163:2333 164:1977 165:2612 166:1302 167:2156 168:3924 169:808 170:5437 171:1114 172:4543 173:3432 174:908 175:1343 176:3767 177:4699 178:4296 179:2277 180:2828 181:4338 182:3842 183:2635 184:2069 185:21684 186:5500 187:4775 188:4454 189:4492 190:9677 191:1535 192:11454 193:9506 194:7852 195:5614 196:3294 197:3178 198:6226 199:6099 200:8217 201:6391 202:10483 203:10577 204:4655 205:3752 206:4421 207:3940 208:4295 209:5454 210:4780 211:2678 212:4894 213:4030 214:1059 215:53 216:7081 217:3388 218:1596 219:404 220:2190 221:1288 222:777 223:3188 End of report