IPv4 R&E Routing Table Report 21:10 GMT Mon 21 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: 989698 Prefixes after maximum aggregation (per Origin AS): 383169 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 486946 Number of IPv4 prefixes with a valid ROA: 556264 Number of IPv4 prefixes with an invalid ROA: 135 Number of IPv4 prefixes with no ROA: 433299 Total ASes present in the Internet Routing Table: 77005 Prefixes per ASN: 12.85 Origin-only ASes present in the Internet Routing Table: 65935 Origin ASes announcing only one prefix: 26930 Transit ASes present in the Internet Routing Table: 11070 Transit-only ASes present in the Internet Routing Table: 561 Paths with bogon ASNs present in the IPv4 Routing Table: 25 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: 1103 Number of instances of unregistered ASNs: 1137 Number of 32-bit ASNs allocated by the RIRs: 46911 Number of 32-bit ASNs visible in the Routing Table: 38592 Prefixes from 32-bit ASNs in the Routing Table: 205656 Number of bogon 32-bit ASNs visible in the Routing Table: 95 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 431 Number of addresses announced to Internet: 3106880256 Equivalent to 185 /8s, 47 /16s and 59 /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: 322978 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 261423 Total APNIC prefixes after maximum aggregation: 77763 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 252349 Unique aggregates announced from the APNIC address blocks: 104931 APNIC Region origin ASes present in the Internet Routing Table: 14709 APNIC Prefixes per ASN: 17.16 APNIC Region origin ASes announcing only one prefix: 4504 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: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10245 Number of APNIC addresses announced to Internet: 749103872 Equivalent to 44 /8s, 166 /16s and 107 /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: 291581 Total ARIN prefixes after maximum aggregation: 132127 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 293257 Unique aggregates announced from the ARIN address blocks: 141195 ARIN Region origin ASes present in the Internet Routing Table: 19236 ARIN Prefixes per ASN: 15.25 ARIN Region origin ASes announcing only one prefix: 7035 ARIN Region transit ASes present in the Internet Routing Table: 1999 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: 5262 Number of ARIN addresses announced to Internet: 1349275136 Equivalent to 80 /8s, 108 /16s and 78 /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: 276467 Total RIPE prefixes after maximum aggregation: 136029 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 275532 Unique aggregates announced from the RIPE address blocks: 177422 RIPE Region origin ASes present in the Internet Routing Table: 28934 RIPE Prefixes per ASN: 9.52 RIPE Region origin ASes announcing only one prefix: 12041 RIPE Region transit ASes present in the Internet Routing Table: 4000 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: 12564 Number of RIPE addresses announced to Internet: 732089088 Equivalent to 43 /8s, 162 /16s and 203 /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: 124526 Total LACNIC prefixes after maximum aggregation: 29734 LACNIC Deaggregation factor: 4.19 Prefixes being announced from the LACNIC address blocks: 120856 Unique aggregates announced from the LACNIC address blocks: 49110 LACNIC Region origin ASes present in the Internet Routing Table: 11261 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2654 LACNIC Region transit ASes present in the Internet Routing Table: 2526 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: 171076608 Equivalent to 10 /8s, 50 /16s and 108 /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: 34598 Total AfriNIC prefixes after maximum aggregation: 6779 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47272 Unique aggregates announced from the AfriNIC address blocks: 13919 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: 696 AfriNIC Region transit ASes present in the Internet Routing Table: 381 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: 1296 Number of AfriNIC addresses announced to Internet: 105091072 Equivalent to 6 /8s, 67 /16s and 144 /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 6161 840 622 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4485 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4463 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 3279 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 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 40974 5291 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 3342 3031 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3223 54766 2474 DNIC-AS-00749, US 396982 3197 3856 433 GOOGLE-CLOUD-PLATFORM, US 16625 3063 1297 2223 AKAMAI-AS, US 4155 2870 218 1736 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 7607 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4038 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 1573 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 12309 3259 574 UNINET, MX 10620 3484 474 1027 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 1202 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1196 371 22 Telefonica del Peru S.A.A., PE 22884 1068 71 372 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1022 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 1719 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1294 1488 355 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1215 389 22 LINKdotNET-AS, EG 37069 1101 1112 11 MOBINIL, EG 36935 822 520 43 Vodafone-, EG 36914 577 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 40974 5291 AMAZON-02, US 8151 12309 3259 574 UNINET, MX 9808 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7607 1712 148 UNI2-AS, ES 7545 6161 840 622 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4813 319 611 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4485 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 4038 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 12309 11735 UNINET, MX 9808 11823 11707 CHINAMOBILE-CN China Mobile Communications Grou 12479 7607 7459 UNI2-AS, ES 7545 6161 5539 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4485 4460 FPT-AS-AP FPT Telecom Company, VN 11492 4813 4202 CABLEONE, US 9498 4463 4152 BBIL-AP BHARTI Airtel Ltd., IN 20940 4038 3911 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 /17:8226 /18:13500 /19:24546 /20:43985 /21:51737 /22:111824 /23:102899 /24:614790 /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 6551 7607 UNI2-AS, ES 8151 6527 12309 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 2494 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2354 13683 AMAZON-02, US 30036 2272 2613 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3484 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) ---------------------------------------------- 1:2403 2:1526 3:854 4:10 5:4754 6:163 7:6 8:1551 9:1 11:172 12:1336 13:460 14:2559 15:365 16:286 17:378 18:897 20:558 21:4 22:188 23:7743 24:2722 25:2 27:2810 29:19 31:3337 32:35 33:1 34:80 35:260 36:3620 37:4569 38:9421 39:911 40:252 41:4220 42:1984 43:2683 44:376 45:18554 46:5099 47:336 49:1874 50:1943 51:591 52:1549 54:324 55:1108 56:11 57:274 58:2176 59:1291 60:1174 61:2798 62:2970 63:1799 64:5530 65:2162 66:4702 67:3107 68:1083 69:3900 70:1042 71:631 72:2853 74:2794 75:1506 76:602 77:2758 78:1916 79:1690 80:2199 81:2054 82:3181 83:1437 84:1892 85:3461 86:1086 87:2134 88:1342 89:4421 90:779 91:8414 92:2710 93:2954 94:4053 95:4424 96:1467 97:310 98:955 99:695 100:71 101:1182 102:3887 103:32217 104:5205 105:800 106:970 107:2640 108:1259 109:4188 110:2233 111:3294 112:2237 113:1840 114:1952 115:2255 116:2062 117:2582 118:2983 119:1889 120:2144 121:1332 122:2791 123:2242 124:1644 125:2876 126:90 128:1621 129:966 130:1311 131:2049 132:776 133:450 134:1644 135:323 136:1441 137:1321 138:2825 139:1586 140:1635 141:1505 142:1909 143:1994 144:1184 145:562 146:2169 147:2104 148:2711 149:2932 150:1272 151:2219 152:2075 153:591 154:7584 155:1847 156:3077 157:1943 158:1351 159:2512 160:3630 161:1898 162:3855 163:2259 164:1871 165:2364 166:1522 167:2019 168:3988 169:788 170:5127 171:1003 172:4250 173:3391 174:917 175:1327 176:3744 177:4704 178:3936 179:2316 180:2601 181:4131 182:3511 183:2152 184:2080 185:21613 186:5227 187:4660 188:4270 189:4327 190:9567 191:1493 192:11354 193:9486 194:7768 195:5583 196:3292 197:3195 198:6225 199:8604 200:8207 201:6383 202:10380 203:10675 204:4677 205:3658 206:4525 207:3638 208:4295 209:5186 210:4632 211:2592 212:4548 213:3829 214:1025 215:46 216:6726 217:3223 218:1365 219:393 220:2144 221:1193 222:743 223:2674 End of report