IPv4 R&E Routing Table Report 21:10 GMT Sat 19 Jul, 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: 989391 Prefixes after maximum aggregation (per Origin AS): 383118 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487006 Number of IPv4 prefixes with a valid ROA: 556082 Number of IPv4 prefixes with an invalid ROA: 135 Number of IPv4 prefixes with no ROA: 433174 Total ASes present in the Internet Routing Table: 77017 Prefixes per ASN: 12.85 Origin-only ASes present in the Internet Routing Table: 65952 Origin ASes announcing only one prefix: 26925 Transit ASes present in the Internet Routing Table: 11065 Transit-only ASes present in the Internet Routing Table: 561 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 52 Max AS path prepend of ASN ( 7438) 33 Prefixes from unregistered ASNs in the Routing Table: 1123 Number of instances of unregistered ASNs: 1159 Number of 32-bit ASNs allocated by the RIRs: 46890 Number of 32-bit ASNs visible in the Routing Table: 38591 Prefixes from 32-bit ASNs in the Routing Table: 205530 Number of bogon 32-bit ASNs visible in the Routing Table: 99 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 446 Number of addresses announced to Internet: 3107096064 Equivalent to 185 /8s, 50 /16s and 134 /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: 322804 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 261467 Total APNIC prefixes after maximum aggregation: 77817 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 252334 Unique aggregates announced from the APNIC address blocks: 104950 APNIC Region origin ASes present in the Internet Routing Table: 14715 APNIC Prefixes per ASN: 17.15 APNIC Region origin ASes announcing only one prefix: 4505 APNIC Region transit ASes present in the Internet Routing Table: 1984 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 34 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10256 Number of APNIC addresses announced to Internet: 749193984 Equivalent to 44 /8s, 167 /16s and 203 /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: 291309 Total ARIN prefixes after maximum aggregation: 132037 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 293095 Unique aggregates announced from the ARIN address blocks: 141195 ARIN Region origin ASes present in the Internet Routing Table: 19233 ARIN Prefixes per ASN: 15.24 ARIN Region origin ASes announcing only one prefix: 7036 ARIN Region transit ASes present in the Internet Routing Table: 1997 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 34 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5259 Number of ARIN addresses announced to Internet: 1349308672 Equivalent to 80 /8s, 108 /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: 276498 Total RIPE prefixes after maximum aggregation: 136073 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 275529 Unique aggregates announced from the RIPE address blocks: 177423 RIPE Region origin ASes present in the Internet Routing Table: 28946 RIPE Prefixes per ASN: 9.52 RIPE Region origin ASes announcing only one prefix: 12042 RIPE Region transit ASes present in the Internet Routing Table: 3995 Average RIPE Region AS path length visible: 4.5 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12559 Number of RIPE addresses announced to Internet: 732215296 Equivalent to 43 /8s, 164 /16s and 184 /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: 124508 Total LACNIC prefixes after maximum aggregation: 29717 LACNIC Deaggregation factor: 4.19 Prefixes being announced from the LACNIC address blocks: 120830 Unique aggregates announced from the LACNIC address blocks: 49184 LACNIC Region origin ASes present in the Internet Routing Table: 11258 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2647 LACNIC Region transit ASes present in the Internet Routing Table: 2528 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9225 Number of LACNIC addresses announced to Internet: 171083520 Equivalent to 10 /8s, 50 /16s and 135 /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: 34486 Total AfriNIC prefixes after maximum aggregation: 6732 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 47156 Unique aggregates announced from the AfriNIC address blocks: 13880 AfriNIC Region origin ASes present in the Internet Routing Table: 1926 AfriNIC Prefixes per ASN: 24.48 AfriNIC Region origin ASes announcing only one prefix: 695 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: 32 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1292 Number of AfriNIC addresses announced to Internet: 105047296 Equivalent to 6 /8s, 66 /16s and 229 /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 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6158 840 622 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4479 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4445 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3701 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3278 1868 100 VNPT-AS-VN VNPT Corp, VN 24560 2905 863 520 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2736 811 177 CMNET-JIANGSU-AP China Mobile communicati 4755 2184 434 193 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 13694 40975 5282 AMAZON-02, US 11492 4810 319 622 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3446 8771 858 COGENT-174, US 22773 3341 3031 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3226 54766 2477 DNIC-AS-00749, US 396982 3196 3855 432 GOOGLE-CLOUD-PLATFORM, US 16625 3066 1298 2225 AKAMAI-AS, US 4155 2864 217 1731 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 7602 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4036 3395 127 AKAMAI-ASN1, NL 9009 3786 361 2107 M247, RO 12389 3120 2317 873 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2321 164 1689 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1545 1852 14 TE-AS TE-AS, EG 203020 1475 163 648 HOSTROYALE, IN 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 12307 3255 574 UNINET, MX 10620 3514 482 1020 Telmex Colombia S.A., CO 13999 2529 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1370 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1346 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1201 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1195 371 22 Telefonica del Peru S.A.A., PE 22884 1068 71 372 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1019 373 162 Axtel, S.A.B. de C.V., MX 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 1733 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36903 1249 554 96 MT-MPLS, MA 36992 1221 1482 324 ETISALAT-MISR, EG 24863 1213 389 22 LINKdotNET-AS, EG 37069 1101 1112 11 MOBINIL, EG 36935 822 520 43 Vodafone-, EG 36914 578 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 532 56 54 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 13694 40975 5282 AMAZON-02, US 8151 12307 3255 574 UNINET, MX 9808 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7602 1712 148 UNI2-AS, ES 7545 6158 840 622 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4810 319 622 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4479 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4445 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 4036 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 8151 12307 11733 UNINET, MX 9808 11823 11707 CHINAMOBILE-CN China Mobile Communications Grou 12479 7602 7454 UNI2-AS, ES 7545 6158 5536 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4479 4454 FPT-AS-AP FPT Telecom Company, VN 11492 4810 4188 CABLEONE, US 9498 4445 4134 BBIL-AP BHARTI Airtel Ltd., IN 20940 4036 3909 AKAMAI-ASN1, NL 7552 3918 3891 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-spar 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:582 /14:1210 /15:2151 /16:13786 /17:8224 /18:13498 /19:24550 /20:43971 /21:51731 /22:111816 /23:102855 /24:614555 /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 12479 6544 7602 UNI2-AS, ES 8151 6527 12307 UNINET, MX 11492 3604 4810 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2494 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2352 13694 AMAZON-02, US 30036 2270 2611 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2201 3514 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) ---------------------------------------------- 1:2405 2:1526 3:854 4:10 5:4759 6:163 7:6 8:1551 9:1 11:172 12:1335 13:458 14:2558 15:365 16:286 17:379 18:895 20:558 21:4 22:188 23:7740 24:2724 25:2 27:2821 29:19 31:3342 32:35 33:1 34:80 35:260 36:3630 37:4566 38:9422 39:911 40:253 41:4210 42:1979 43:2677 44:372 45:18573 46:5108 47:336 49:1869 50:1949 51:591 52:1554 54:327 55:1112 56:11 57:274 58:2176 59:1277 60:1174 61:2790 62:2968 63:1799 64:5533 65:2161 66:4716 67:3102 68:1085 69:3901 70:1043 71:631 72:2850 74:2792 75:1507 76:602 77:2758 78:1922 79:1692 80:2200 81:2052 82:3192 83:1442 84:1888 85:3467 86:1087 87:2133 88:1348 89:4422 90:778 91:8415 92:2700 93:2950 94:4067 95:4421 96:1467 97:310 98:955 99:696 100:71 101:1181 102:3889 103:32243 104:5212 105:770 106:970 107:2639 108:1181 109:4166 110:2233 111:3309 112:2235 113:1841 114:1955 115:2254 116:2062 117:2582 118:2985 119:1890 120:2144 121:1332 122:2791 123:2242 124:1643 125:2877 126:91 128:1620 129:966 130:1309 131:2050 132:775 133:450 134:1645 135:350 136:1452 137:1315 138:2821 139:1586 140:1636 141:1514 142:1907 143:1988 144:1179 145:562 146:2171 147:2103 148:2710 149:2937 150:1224 151:2226 152:2071 153:591 154:7552 155:1847 156:3081 157:1953 158:1349 159:2513 160:3627 161:1902 162:3866 163:2257 164:1845 165:2350 166:1520 167:2023 168:3987 169:787 170:5124 171:1006 172:4246 173:3388 174:918 175:1324 176:3722 177:4708 178:3928 179:2305 180:2600 181:4127 182:3505 183:2149 184:2082 185:21609 186:5218 187:4660 188:4273 189:4324 190:9556 191:1501 192:11351 193:9476 194:7769 195:5586 196:3301 197:3195 198:6217 199:8595 200:8219 201:6387 202:10376 203:10669 204:4677 205:3624 206:4530 207:3636 208:4290 209:5185 210:4596 211:2590 212:4557 213:3835 214:1023 215:46 216:6731 217:3217 218:1365 219:393 220:2141 221:1193 222:743 223:2674 End of report