IPv4 R&E Routing Table Report 21:10 GMT Mon 22 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: 1002972 Prefixes after maximum aggregation (per Origin AS): 389278 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495218 Number of IPv4 prefixes with a valid ROA: 572582 Number of IPv4 prefixes with an invalid ROA: 149 Number of IPv4 prefixes with no ROA: 430231 Total ASes present in the Internet Routing Table: 77323 Prefixes per ASN: 12.97 Origin-only ASes present in the Internet Routing Table: 66233 Origin ASes announcing only one prefix: 27076 Transit ASes present in the Internet Routing Table: 11090 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 5 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: 1022 Number of instances of unregistered ASNs: 1051 Number of 32-bit ASNs allocated by the RIRs: 47520 Number of 32-bit ASNs visible in the Routing Table: 38985 Prefixes from 32-bit ASNs in the Routing Table: 210338 Number of bogon 32-bit ASNs visible in the Routing Table: 68 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 434 Number of addresses announced to Internet: 3111965440 Equivalent to 185 /8s, 124 /16s and 211 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 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: 327003 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267668 Total APNIC prefixes after maximum aggregation: 79328 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 257874 Unique aggregates announced from the APNIC address blocks: 105654 APNIC Region origin ASes present in the Internet Routing Table: 14809 APNIC Prefixes per ASN: 17.41 APNIC Region origin ASes announcing only one prefix: 4506 APNIC Region transit ASes present in the Internet Routing Table: 1980 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: 10354 Number of APNIC addresses announced to Internet: 750956288 Equivalent to 44 /8s, 194 /16s and 175 /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: 295241 Total ARIN prefixes after maximum aggregation: 134062 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 296550 Unique aggregates announced from the ARIN address blocks: 143054 ARIN Region origin ASes present in the Internet Routing Table: 19318 ARIN Prefixes per ASN: 15.35 ARIN Region origin ASes announcing only one prefix: 7081 ARIN Region transit ASes present in the Internet Routing Table: 1984 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: 5332 Number of ARIN addresses announced to Internet: 1353470208 Equivalent to 80 /8s, 172 /16s and 81 /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: 279269 Total RIPE prefixes after maximum aggregation: 138126 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278647 Unique aggregates announced from the RIPE address blocks: 180177 RIPE Region origin ASes present in the Internet Routing Table: 29062 RIPE Prefixes per ASN: 9.59 RIPE Region origin ASes announcing only one prefix: 12096 RIPE Region transit ASes present in the Internet Routing Table: 4018 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: 12721 Number of RIPE addresses announced to Internet: 732582912 Equivalent to 43 /8s, 170 /16s and 84 /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: 124839 Total LACNIC prefixes after maximum aggregation: 30235 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121066 Unique aggregates announced from the LACNIC address blocks: 49454 LACNIC Region origin ASes present in the Internet Routing Table: 11280 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2674 LACNIC Region transit ASes present in the Internet Routing Table: 2521 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9247 Number of LACNIC addresses announced to Internet: 170712576 Equivalent to 10 /8s, 44 /16s and 222 /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: 34933 Total AfriNIC prefixes after maximum aggregation: 6847 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 48400 Unique aggregates announced from the AfriNIC address blocks: 16496 AfriNIC Region origin ASes present in the Internet Routing Table: 1966 AfriNIC Prefixes per ASN: 24.62 AfriNIC Region origin ASes announcing only one prefix: 719 AfriNIC Region transit ASes present in the Internet Routing Table: 384 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: 1331 Number of AfriNIC addresses announced to Internet: 104008960 Equivalent to 6 /8s, 51 /16s and 13 /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 13506 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6162 837 603 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4448 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3938 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3708 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3295 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 3074 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2921 863 500 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2171 427 182 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 14335 40906 5399 AMAZON-02, US 11492 4737 320 807 CABLEONE, US 22773 4618 3103 322 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3677 1320 82 SHAW, CA 174 3289 8773 823 COGENT-174, US 396982 3263 4823 458 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 16625 3054 1300 2214 AKAMAI-AS, US 4155 3043 236 1720 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 7451 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4031 3395 127 AKAMAI-ASN1, NL 9009 3918 368 2220 M247, RO 12389 3119 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2442 173 1766 CDNEXT, GB 34984 2416 363 574 TELLCOM-AS, TR 203020 1960 230 916 HOSTROYALE, IN 8452 1631 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 12303 3275 579 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2542 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 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 1187 371 23 Telefonica del Peru S.A.A., PE 22884 1065 71 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1001 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 1821 652 28 RAYA-AS, EG 36992 1508 1498 384 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1247 389 20 LINKdotNET-AS, EG 29571 1184 102 53 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1077 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 576 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 14335 40906 5399 AMAZON-02, US 9808 13506 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12303 3275 579 UNINET, MX 12479 7451 1711 149 UNI2-AS, ES 7545 6162 837 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4737 320 807 CABLEONE, US 22773 4618 3103 322 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4448 347 25 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 13506 13390 CHINAMOBILE-CN China Mobile Communications Grou 8151 12303 11724 UNINET, MX 12479 7451 7302 UNI2-AS, ES 7545 6162 5559 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4448 4423 FPT-AS-AP FPT Telecom Company, VN 22773 4618 4296 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4468 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4737 3930 CABLEONE, US 7552 3938 3910 VIETEL-AS-AP Viettel Group, VN 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 /15:2152 /16:13771 /17:8214 /18:13455 /19:24620 /20:44234 /21:52018 /22:112542 /23:103702 /24:626010 /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 6521 12303 UNINET, MX 12479 6420 7451 UNI2-AS, ES 11492 3552 4737 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3677 SHAW, CA 22773 3020 4618 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2818 3859 VIASAT-SP-BACKBONE, US 16509 2449 14335 AMAZON-02, US 30036 2298 2639 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) ---------------------------------------------- 1:2416 2:1555 3:936 4:10 5:4832 6:165 7:6 8:1537 9:6 11:172 12:1246 13:564 14:2621 15:399 16:303 17:386 18:903 20:572 21:4 22:188 23:8025 24:2705 25:2 27:2810 29:19 31:3355 32:30 33:1 34:81 35:267 36:4368 37:4531 38:9410 39:1076 40:285 41:4317 42:1970 43:2707 44:381 45:18839 46:5147 47:342 49:2012 50:2042 51:593 52:1639 54:365 55:1094 56:11 57:288 58:2244 59:1292 60:1187 61:2907 62:3029 63:1772 64:5626 65:2116 66:5196 67:3200 68:1082 69:3928 70:1032 71:640 72:2894 74:2826 75:1498 76:602 77:2772 78:1920 79:1754 80:2236 81:2097 82:3339 83:1457 84:1975 85:3492 86:1095 87:2134 88:1359 89:4491 90:805 91:8411 92:2789 93:2980 94:4162 95:4469 96:1486 97:312 98:951 99:762 100:71 101:1211 102:4112 103:32302 104:5349 105:784 106:880 107:2781 108:1221 109:4210 110:2239 111:3732 112:2611 113:1841 114:1993 115:2325 116:2079 117:2866 118:3060 119:1928 120:2238 121:1355 122:2823 123:2264 124:1660 125:2877 126:91 128:1607 129:966 130:1300 131:2129 132:791 133:460 134:1611 135:361 136:1489 137:1330 138:2793 139:1608 140:1641 141:1546 142:1909 143:2027 144:1271 145:624 146:2182 147:2118 148:2730 149:2909 150:1265 151:2527 152:2125 153:641 154:7432 155:2044 156:3473 157:1996 158:1429 159:2568 160:3562 161:1976 162:3925 163:2294 164:1910 165:2572 166:1558 167:2092 168:3811 169:781 170:5376 171:1006 172:4259 173:3405 174:902 175:1342 176:3803 177:4745 178:4177 179:2297 180:2610 181:4247 182:3727 183:2481 184:2077 185:21656 186:5374 187:4714 188:4274 189:4359 190:9696 191:1545 192:11406 193:9469 194:7798 195:5566 196:3290 197:3234 198:6240 199:8707 200:8225 201:6349 202:10434 203:10654 204:4564 205:3687 206:4554 207:3665 208:4263 209:5299 210:4751 211:2680 212:4704 213:3863 214:1041 215:52 216:6881 217:3330 218:1557 219:394 220:2188 221:1234 222:752 223:2969 End of report