IPv4 R&E Routing Table Report 21:10 GMT Tue 22 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: 990290 Prefixes after maximum aggregation (per Origin AS): 383521 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487206 Number of IPv4 prefixes with a valid ROA: 556539 Number of IPv4 prefixes with an invalid ROA: 136 Number of IPv4 prefixes with no ROA: 433615 Total ASes present in the Internet Routing Table: 77017 Prefixes per ASN: 12.86 Origin-only ASes present in the Internet Routing Table: 65959 Origin ASes announcing only one prefix: 26917 Transit ASes present in the Internet Routing Table: 11058 Transit-only ASes present in the Internet Routing Table: 560 Paths with bogon ASNs present in the IPv4 Routing Table: 26 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 52 Max AS path prepend of ASN ( 37447) 34 Prefixes from unregistered ASNs in the Routing Table: 1122 Number of instances of unregistered ASNs: 1157 Number of 32-bit ASNs allocated by the RIRs: 46908 Number of 32-bit ASNs visible in the Routing Table: 38605 Prefixes from 32-bit ASNs in the Routing Table: 205895 Number of bogon 32-bit ASNs visible in the Routing Table: 97 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 462 Number of addresses announced to Internet: 3107264000 Equivalent to 185 /8s, 53 /16s and 22 /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: 323065 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 261794 Total APNIC prefixes after maximum aggregation: 77786 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 252701 Unique aggregates announced from the APNIC address blocks: 104948 APNIC Region origin ASes present in the Internet Routing Table: 14710 APNIC Prefixes per ASN: 17.18 APNIC Region origin ASes announcing only one prefix: 4497 APNIC Region transit ASes present in the Internet Routing Table: 1982 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: 10250 Number of APNIC addresses announced to Internet: 749255936 Equivalent to 44 /8s, 168 /16s and 189 /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: 291740 Total ARIN prefixes after maximum aggregation: 132223 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 293473 Unique aggregates announced from the ARIN address blocks: 141377 ARIN Region origin ASes present in the Internet Routing Table: 19234 ARIN Prefixes per ASN: 15.26 ARIN Region origin ASes announcing only one prefix: 7032 ARIN Region transit ASes present in the Internet Routing Table: 1993 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: 5265 Number of ARIN addresses announced to Internet: 1349429504 Equivalent to 80 /8s, 110 /16s and 169 /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: 276581 Total RIPE prefixes after maximum aggregation: 136182 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 275572 Unique aggregates announced from the RIPE address blocks: 177474 RIPE Region origin ASes present in the Internet Routing Table: 28947 RIPE Prefixes per ASN: 9.52 RIPE Region origin ASes announcing only one prefix: 12054 RIPE Region transit ASes present in the Internet Routing Table: 4001 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: 12572 Number of RIPE addresses announced to Internet: 732152576 Equivalent to 43 /8s, 163 /16s and 195 /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: 124505 Total LACNIC prefixes after maximum aggregation: 29803 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 120813 Unique aggregates announced from the LACNIC address blocks: 49071 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: 2635 LACNIC Region transit ASes present in the Internet Routing Table: 2523 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: 9222 Number of LACNIC addresses announced to Internet: 171076352 Equivalent to 10 /8s, 50 /16s and 107 /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: 34548 Total AfriNIC prefixes after maximum aggregation: 6775 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47268 Unique aggregates announced from the AfriNIC address blocks: 13949 AfriNIC Region origin ASes present in the Internet Routing Table: 1930 AfriNIC Prefixes per ASN: 24.49 AfriNIC Region origin ASes announcing only one prefix: 699 AfriNIC Region transit ASes present in the Internet Routing Table: 377 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: 1296 Number of AfriNIC addresses announced to Internet: 105097728 Equivalent to 6 /8s, 67 /16s and 170 /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 12031 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6153 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4475 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3919 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3700 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3279 1868 100 VNPT-AS-VN VNPT Corp, VN 24560 2910 863 508 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2736 811 177 CMNET-JIANGSU-AP China Mobile communicati 4755 2183 434 196 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 13683 40975 5286 AMAZON-02, US 11492 4813 319 611 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3454 8771 858 COGENT-174, US 22773 3341 3031 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3197 3856 433 GOOGLE-CLOUD-PLATFORM, US 16625 3063 1297 2223 AKAMAI-AS, US 4155 2874 218 1732 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 7592 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4037 3395 127 AKAMAI-ASN1, NL 9009 3789 361 2110 M247, RO 12389 3120 2317 873 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 584 TELLCOM-AS, TR 212238 2319 164 1687 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1588 1852 14 TE-AS TE-AS, EG 203020 1476 163 649 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 12273 3259 574 UNINET, MX 10620 3449 470 1086 Telmex Colombia S.A., CO 13999 2527 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 1204 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1195 371 22 Telefonica del Peru S.A.A., PE 22884 1068 71 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1020 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 1728 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1309 1488 357 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1218 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 832 520 43 Vodafone-, EG 36914 579 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 13683 40975 5286 AMAZON-02, US 8151 12273 3259 574 UNINET, MX 9808 12031 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7592 1712 148 UNI2-AS, ES 7545 6153 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4813 319 611 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4475 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 4037 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 12031 11915 CHINAMOBILE-CN China Mobile Communications Grou 8151 12273 11699 UNINET, MX 12479 7592 7444 UNI2-AS, ES 7545 6153 5532 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4475 4450 FPT-AS-AP FPT Telecom Company, VN 11492 4813 4202 CABLEONE, US 9498 4463 4152 BBIL-AP BHARTI Airtel Ltd., IN 20940 4037 3910 AKAMAI-ASN1, NL 7552 3919 3892 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 /15:2152 /16:13792 /17:8221 /18:13505 /19:24538 /20:43972 /21:51738 /22:111901 /23:102896 /24:615321 /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 6536 7592 UNI2-AS, ES 8151 6492 12273 UNINET, MX 11492 3606 4813 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2493 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2357 13683 AMAZON-02, US 30036 2272 2613 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2165 3449 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) ---------------------------------------------- 1:2398 2:1525 3:854 4:10 5:4760 6:163 7:6 8:1554 9:1 11:172 12:1337 13:463 14:2571 15:366 16:286 17:378 18:897 20:558 21:4 22:188 23:7741 24:2725 25:2 27:2812 29:19 31:3342 32:35 33:1 34:80 35:260 36:3744 37:4571 38:9448 39:926 40:251 41:4232 42:1979 43:2680 44:377 45:18585 46:5096 47:336 49:1875 50:2012 51:591 52:1549 54:323 55:1111 56:11 57:274 58:2175 59:1293 60:1173 61:2798 62:2974 63:1796 64:5540 65:2162 66:4726 67:3107 68:1083 69:3905 70:1042 71:628 72:2852 74:2798 75:1507 76:606 77:2760 78:1922 79:1697 80:2204 81:2053 82:3180 83:1439 84:1895 85:3466 86:1085 87:2133 88:1342 89:4430 90:777 91:8416 92:2709 93:2957 94:4061 95:4420 96:1467 97:310 98:955 99:695 100:71 101:1185 102:3875 103:32243 104:5220 105:800 106:972 107:2643 108:1260 109:4185 110:2230 111:3327 112:2257 113:1839 114:1952 115:2263 116:2065 117:2594 118:2986 119:1889 120:2149 121:1332 122:2792 123:2242 124:1644 125:2867 126:91 128:1626 129:964 130:1312 131:2053 132:775 133:450 134:1644 135:350 136:1401 137:1318 138:2832 139:1588 140:1633 141:1505 142:1909 143:1992 144:1183 145:563 146:2179 147:2112 148:2712 149:2936 150:1263 151:2222 152:2074 153:590 154:7597 155:1855 156:3081 157:1949 158:1353 159:2513 160:3632 161:1903 162:3855 163:2265 164:1868 165:2372 166:1520 167:2020 168:3988 169:786 170:5129 171:999 172:4258 173:3391 174:917 175:1327 176:3745 177:4711 178:3936 179:2308 180:2577 181:4120 182:3516 183:2164 184:2081 185:21610 186:5228 187:4661 188:4262 189:4303 190:9551 191:1494 192:11355 193:9484 194:7766 195:5587 196:3277 197:3179 198:6225 199:8612 200:8203 201:6383 202:10388 203:10677 204:4677 205:3656 206:4530 207:3642 208:4294 209:5184 210:4651 211:2592 212:4551 213:3827 214:1023 215:48 216:6755 217:3218 218:1367 219:393 220:2145 221:1194 222:743 223:2674 End of report