IPv4 R&E Routing Table Report 21:10 GMT Fri 19 Sep, 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: 1002129 Prefixes after maximum aggregation (per Origin AS): 389064 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 494873 Number of IPv4 prefixes with a valid ROA: 572194 Number of IPv4 prefixes with an invalid ROA: 151 Number of IPv4 prefixes with no ROA: 429784 Total ASes present in the Internet Routing Table: 77319 Prefixes per ASN: 12.96 Origin-only ASes present in the Internet Routing Table: 66223 Origin ASes announcing only one prefix: 27056 Transit ASes present in the Internet Routing Table: 11096 Transit-only ASes present in the Internet Routing Table: 553 Paths with bogon ASNs present in the IPv4 Routing Table: 6 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 52 Max AS path prepend of ASN ( 59958) 48 Prefixes from unregistered ASNs in the Routing Table: 1026 Number of instances of unregistered ASNs: 1055 Number of 32-bit ASNs allocated by the RIRs: 47485 Number of 32-bit ASNs visible in the Routing Table: 38977 Prefixes from 32-bit ASNs in the Routing Table: 210304 Number of bogon 32-bit ASNs visible in the Routing Table: 70 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 436 Number of addresses announced to Internet: 3111451136 Equivalent to 185 /8s, 116 /16s and 250 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 326574 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267436 Total APNIC prefixes after maximum aggregation: 79218 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 257647 Unique aggregates announced from the APNIC address blocks: 105579 APNIC Region origin ASes present in the Internet Routing Table: 14802 APNIC Prefixes per ASN: 17.41 APNIC Region origin ASes announcing only one prefix: 4517 APNIC Region transit ASes present in the Internet Routing Table: 1978 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10349 Number of APNIC addresses announced to Internet: 750401536 Equivalent to 44 /8s, 186 /16s and 56 /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: 294610 Total ARIN prefixes after maximum aggregation: 134020 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295953 Unique aggregates announced from the ARIN address blocks: 142809 ARIN Region origin ASes present in the Internet Routing Table: 19317 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7078 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: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5335 Number of ARIN addresses announced to Internet: 1353240832 Equivalent to 80 /8s, 168 /16s and 209 /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: 279285 Total RIPE prefixes after maximum aggregation: 138075 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278644 Unique aggregates announced from the RIPE address blocks: 180140 RIPE Region origin ASes present in the Internet Routing Table: 29054 RIPE Prefixes per ASN: 9.59 RIPE Region origin ASes announcing only one prefix: 12085 RIPE Region transit ASes present in the Internet Routing Table: 4016 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 52 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12709 Number of RIPE addresses announced to Internet: 732599040 Equivalent to 43 /8s, 170 /16s and 147 /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: 124870 Total LACNIC prefixes after maximum aggregation: 30234 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121112 Unique aggregates announced from the LACNIC address blocks: 49480 LACNIC Region origin ASes present in the Internet Routing Table: 11290 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2661 LACNIC Region transit ASes present in the Internet Routing Table: 2528 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9258 Number of LACNIC addresses announced to Internet: 170617088 Equivalent to 10 /8s, 43 /16s and 105 /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: 34902 Total AfriNIC prefixes after maximum aggregation: 6836 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 48336 Unique aggregates announced from the AfriNIC address blocks: 16480 AfriNIC Region origin ASes present in the Internet Routing Table: 1962 AfriNIC Prefixes per ASN: 24.64 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 386 Average AfriNIC Region AS path length visible: 5.1 Max AfriNIC Region AS path length visible: 37 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1326 Number of AfriNIC addresses announced to Internet: 104356864 Equivalent to 6 /8s, 56 /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 13502 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6161 837 602 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4474 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3941 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3713 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3291 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 3074 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2920 863 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2170 427 181 TATACOMM-AS TATA Communications formerly 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 14418 40908 5410 AMAZON-02, US 11492 4737 320 807 CABLEONE, US 22773 3946 3061 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3677 1320 82 SHAW, CA 174 3286 8774 825 COGENT-174, US 396982 3263 4823 458 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 16625 3055 1300 2215 AKAMAI-AS, US 4155 3037 235 1728 USDA-1, 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 7459 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4032 3395 127 AKAMAI-ASN1, NL 9009 3912 368 2216 M247, RO 12389 3119 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2418 172 1751 CDNEXT, GB 34984 2415 363 574 TELLCOM-AS, TR 203020 1959 230 915 HOSTROYALE, IN 8452 1625 1852 14 TE-AS TE-AS, EG 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 12331 3251 584 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2541 511 346 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1226 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1184 371 22 Telefonica del Peru S.A.A., PE 22884 1065 71 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2487 55 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 1813 652 28 RAYA-AS, EG 36992 1507 1498 383 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1247 389 20 LINKdotNET-AS, EG 29571 1185 102 51 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1029 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 560 82 3 KENET-AS, KE 15399 548 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 14418 40908 5410 AMAZON-02, US 9808 13502 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12331 3251 584 UNINET, MX 12479 7459 1711 149 UNI2-AS, ES 7545 6161 837 602 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4737 320 807 CABLEONE, US 18403 4474 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 20940 4032 3395 127 AKAMAI-ASN1, NL 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 13502 13386 CHINAMOBILE-CN China Mobile Communications Grou 8151 12331 11747 UNINET, MX 12479 7459 7310 UNI2-AS, ES 7545 6161 5559 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4474 4449 FPT-AS-AP FPT Telecom Company, VN 9498 4468 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4737 3930 CABLEONE, US 7552 3941 3914 VIETEL-AS-AP Viettel Group, VN 20940 4032 3905 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 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 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /12:298 /13:581 /14:1210 /15:2151 /16:13766 /17:8220 /18:13458 /19:24614 /20:44282 /21:52011 /22:112454 /23:103736 /24:625183 /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 6554 12331 UNINET, MX 12479 6427 7459 UNI2-AS, ES 11492 3552 4737 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3677 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2508 3946 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2449 14418 AMAZON-02, US 30036 2295 2636 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3493 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) ---------------------------------------------- 1:2421 2:1552 3:935 4:10 5:4827 6:165 7:6 8:1540 9:6 11:172 12:1246 13:568 14:2610 15:400 16:303 17:386 18:903 20:572 21:4 22:188 23:7903 24:2706 25:2 27:2811 29:19 31:3359 32:30 33:1 34:81 35:267 36:4361 37:4544 38:9399 39:1076 40:283 41:4335 42:1976 43:2714 44:382 45:18848 46:5143 47:344 49:2012 50:2046 51:590 52:1607 54:373 55:1094 56:11 57:288 58:2243 59:1292 60:1187 61:2880 62:3042 63:1774 64:5633 65:2117 66:4902 67:3108 68:1082 69:3932 70:1032 71:638 72:2888 74:2837 75:1502 76:602 77:2775 78:1921 79:1758 80:2233 81:2093 82:3335 83:1454 84:1971 85:3497 86:1097 87:2138 88:1357 89:4495 90:809 91:8414 92:2789 93:2981 94:4157 95:4467 96:1486 97:312 98:952 99:761 100:71 101:1216 102:4124 103:32289 104:5308 105:784 106:879 107:2656 108:1220 109:4210 110:2240 111:3704 112:2611 113:1845 114:1994 115:2320 116:2074 117:2863 118:3063 119:1928 120:2239 121:1358 122:2794 123:2260 124:1661 125:2878 126:91 128:1604 129:965 130:1297 131:2139 132:791 133:461 134:1605 135:362 136:1488 137:1332 138:2806 139:1613 140:1643 141:1540 142:1915 143:2043 144:1263 145:623 146:2182 147:2115 148:2735 149:2910 150:1263 151:2512 152:2123 153:641 154:7429 155:2043 156:3457 157:1996 158:1426 159:2566 160:3563 161:1967 162:3928 163:2301 164:1910 165:2568 166:1558 167:2092 168:3818 169:782 170:5358 171:1007 172:4258 173:3405 174:902 175:1340 176:3801 177:4743 178:4175 179:2273 180:2606 181:4249 182:3728 183:2491 184:2076 185:21663 186:5414 187:4696 188:4275 189:4374 190:9702 191:1557 192:11413 193:9470 194:7798 195:5567 196:3278 197:3225 198:6249 199:8706 200:8236 201:6343 202:10431 203:10649 204:4564 205:3672 206:4554 207:3660 208:4268 209:5301 210:4759 211:2676 212:4699 213:3860 214:1038 215:52 216:6874 217:3331 218:1505 219:394 220:2148 221:1234 222:752 223:2967 End of report