IPv4 R&E Routing Table Report 21:10 GMT Thu 27 Nov, 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: 1017623 Prefixes after maximum aggregation (per Origin AS): 393227 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 503890 Number of IPv4 prefixes with a valid ROA: 592581 Number of IPv4 prefixes with an invalid ROA: 123 Number of IPv4 prefixes with no ROA: 424919 Total ASes present in the Internet Routing Table: 77570 Prefixes per ASN: 13.12 Origin-only ASes present in the Internet Routing Table: 66407 Origin ASes announcing only one prefix: 27112 Transit ASes present in the Internet Routing Table: 11163 Transit-only ASes present in the Internet Routing Table: 567 Paths with bogon ASNs present in the IPv4 Routing Table: 7 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: 993 Number of instances of unregistered ASNs: 1023 Number of 32-bit ASNs allocated by the RIRs: 48070 Number of 32-bit ASNs visible in the Routing Table: 39367 Prefixes from 32-bit ASNs in the Routing Table: 216700 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 495 Number of addresses announced to Internet: 3100592640 Equivalent to 184 /8s, 207 /16s and 74 /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: 332982 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274369 Total APNIC prefixes after maximum aggregation: 80935 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 261897 Unique aggregates announced from the APNIC address blocks: 106265 APNIC Region origin ASes present in the Internet Routing Table: 14879 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4534 APNIC Region transit ASes present in the Internet Routing Table: 2001 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10437 Number of APNIC addresses announced to Internet: 752935936 Equivalent to 44 /8s, 224 /16s and 228 /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: 298790 Total ARIN prefixes after maximum aggregation: 134406 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298586 Unique aggregates announced from the ARIN address blocks: 145571 ARIN Region origin ASes present in the Internet Routing Table: 19383 ARIN Prefixes per ASN: 15.40 ARIN Region origin ASes announcing only one prefix: 7105 ARIN Region transit ASes present in the Internet Routing Table: 1987 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: 5419 Number of ARIN addresses announced to Internet: 1337562624 Equivalent to 79 /8s, 185 /16s and 150 /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: 282390 Total RIPE prefixes after maximum aggregation: 139883 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283215 Unique aggregates announced from the RIPE address blocks: 183592 RIPE Region origin ASes present in the Internet Routing Table: 29122 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12080 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: 46 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12845 Number of RIPE addresses announced to Internet: 735785216 Equivalent to 43 /8s, 219 /16s and 49 /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: 125518 Total LACNIC prefixes after maximum aggregation: 30447 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121524 Unique aggregates announced from the LACNIC address blocks: 49608 LACNIC Region origin ASes present in the Internet Routing Table: 11305 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2664 LACNIC Region transit ASes present in the Internet Routing Table: 2551 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: 9309 Number of LACNIC addresses announced to Internet: 170733824 Equivalent to 10 /8s, 45 /16s and 49 /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: 35563 Total AfriNIC prefixes after maximum aggregation: 6902 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 51905 Unique aggregates announced from the AfriNIC address blocks: 18450 AfriNIC Region origin ASes present in the Internet Routing Table: 1993 AfriNIC Prefixes per ASN: 26.04 AfriNIC Region origin ASes announcing only one prefix: 729 AfriNIC Region transit ASes present in the Internet Routing Table: 378 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: 1357 Number of AfriNIC addresses announced to Internet: 103332096 Equivalent to 6 /8s, 40 /16s and 185 /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 13504 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6067 832 594 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4638 347 24 FPT-AS-AP FPT Telecom Company, VN 9498 4579 541 336 BBIL-AP BHARTI Airtel Ltd., IN 7552 3990 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3330 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3315 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2942 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2526 159 550 LCS-AS-AP LARUS Limited, HK 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 14236 37207 5391 AMAZON-02, US 22773 4772 3115 367 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 3303 4861 481 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 3004 1288 2187 AKAMAI-AS, US 36352 2822 231 920 AS-COLOCROSSING, US 30036 2652 366 341 MEDIACOM-ENTERPRISE-BUSINESS, 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 7297 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4015 379 2282 M247, RO 20940 3989 3395 126 AKAMAI-ASN1, NL 12389 3145 2317 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2536 180 1834 CDNEXT, GB 34984 2420 363 577 TELLCOM-AS, TR 8452 1698 1852 14 TE-AS TE-AS, EG 203020 1611 241 779 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 12645 3301 571 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2511 509 348 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1344 278 31 Techtel LMDS Comunicaciones Interactivas 6147 1264 371 22 Telefonica del Peru S.A.A., PE 22884 1057 70 364 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 1986 630 32 RAYA-AS, EG 36992 1681 1508 399 ETISALAT-MISR, EG 24863 1264 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1086 520 31 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 565 82 3 KENET-AS, KE 15399 546 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 14236 37207 5391 AMAZON-02, US 9808 13504 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12645 3301 571 UNINET, MX 12479 7297 1711 149 UNI2-AS, ES 7545 6067 832 594 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4772 3115 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 18403 4638 347 24 FPT-AS-AP FPT Telecom Company, VN 9498 4579 541 336 BBIL-AP BHARTI Airtel Ltd., IN 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 13504 13387 CHINAMOBILE-CN China Mobile Communications Grou 8151 12645 12074 UNINET, MX 12479 7297 7148 UNI2-AS, ES 7545 6067 5473 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4638 4614 FPT-AS-AP FPT Telecom Company, VN 22773 4772 4405 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4579 4243 BBIL-AP BHARTI Airtel Ltd., IN 7552 3990 3962 VIETEL-AS-AP Viettel Group, VN 20940 3989 3863 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 12.17.5.0/24 174 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 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: 174 COGENT-174, 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 /14:1202 /15:2094 /16:13682 /17:8229 /18:13494 /19:24787 /20:44580 /21:52074 /22:113118 /23:105274 /24:638043 /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 6832 12645 UNINET, MX 12479 6234 7297 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3049 4772 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2432 14236 AMAZON-02, US 30036 2309 2652 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) ---------------------------------------------- 1:2446 2:1573 3:971 4:10 5:4947 6:190 7:6 8:1501 9:6 11:172 12:1233 13:570 14:2612 15:413 16:303 17:388 18:913 20:586 21:4 22:188 23:8129 24:2554 25:2 27:2801 29:19 31:3387 32:31 33:1 34:81 35:284 36:4585 37:4570 38:9305 39:1188 40:450 41:4454 42:2150 43:2837 44:408 45:19445 46:5102 47:377 49:2149 50:2047 51:597 52:1566 54:289 55:1108 56:11 57:304 58:2295 59:1314 60:1185 61:3043 62:3100 63:1748 64:5959 65:2131 66:5933 67:3247 68:1495 69:4181 70:1023 71:627 72:3022 74:2940 75:1517 76:599 77:2765 78:1919 79:1780 80:2297 81:2091 82:3820 83:1465 84:2027 85:3643 86:1107 87:2158 88:1333 89:4599 90:843 91:8435 92:2841 93:3011 94:4221 95:4563 96:1451 97:312 98:958 99:773 100:68 101:1200 102:4305 103:32214 104:5507 105:797 106:902 107:2805 108:1198 109:4248 110:2290 111:3892 112:2777 113:1910 114:2094 115:2283 116:2137 117:3122 118:3047 119:2047 120:2370 121:1513 122:2944 123:2296 124:1602 125:2898 126:125 128:1616 129:967 130:1511 131:2253 132:772 133:462 134:1616 135:389 136:1501 137:1338 138:2878 139:1599 140:1727 141:1545 142:2320 143:2124 144:1326 145:633 146:2189 147:2167 148:2790 149:2885 150:1302 151:2643 152:2296 153:683 154:9315 155:2235 156:4158 157:2208 158:1453 159:2678 160:3760 161:1992 162:3993 163:2328 164:1962 165:2583 166:1308 167:2143 168:3869 169:794 170:5442 171:1114 172:4497 173:3420 174:906 175:1339 176:3764 177:4697 178:4299 179:2324 180:2814 181:4307 182:3832 183:2608 184:2059 185:21719 186:5520 187:4759 188:4428 189:4480 190:9711 191:1540 192:11451 193:9496 194:7859 195:5617 196:3257 197:3200 198:6232 199:6096 200:8216 201:6383 202:10428 203:10580 204:4637 205:3735 206:4417 207:3903 208:4259 209:5452 210:4775 211:2648 212:4907 213:4023 214:1040 215:52 216:7119 217:3354 218:1583 219:403 220:2198 221:1283 222:766 223:3159 End of report