IPv4 R&E Routing Table Report 23:05 GMT Thu 17 Jul, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 986437 Prefixes after maximum aggregation (per Origin AS): 382709 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487018 Number of IPv4 prefixes with a valid ROA: 555425 Number of IPv4 prefixes with an invalid ROA: 778 Number of IPv4 prefixes with no ROA: 430234 Total ASes present in the Internet Routing Table: 76912 Prefixes per ASN: 12.83 Origin-only ASes present in the Internet Routing Table: 65895 Origin ASes announcing only one prefix: 26897 Transit ASes present in the Internet Routing Table: 11017 Transit-only ASes present in the Internet Routing Table: 551 Paths with bogon ASNs present in the IPv4 Routing Table: 34 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 71 Max AS path prepend of ASN ( 63293) 64 Prefixes from unregistered ASNs in the Routing Table: 1157 Number of instances of unregistered ASNs: 1197 Number of 32-bit ASNs allocated by the RIRs: 46856 Number of 32-bit ASNs visible in the Routing Table: 38539 Prefixes from 32-bit ASNs in the Routing Table: 206014 Number of bogon 32-bit ASNs visible in the Routing Table: 96 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 457 Number of addresses announced to Internet: 3106290432 Equivalent to 185 /8s, 38 /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: 321857 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262180 Total APNIC prefixes after maximum aggregation: 77829 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 253089 Unique aggregates announced from the APNIC address blocks: 105206 APNIC Region origin ASes present in the Internet Routing Table: 14680 APNIC Prefixes per ASN: 17.24 APNIC Region origin ASes announcing only one prefix: 4469 APNIC Region transit ASes present in the Internet Routing Table: 1981 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10236 Number of APNIC addresses announced to Internet: 749172992 Equivalent to 44 /8s, 167 /16s and 121 /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: 289620 Total ARIN prefixes after maximum aggregation: 131668 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291433 Unique aggregates announced from the ARIN address blocks: 140999 ARIN Region origin ASes present in the Internet Routing Table: 19189 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7033 ARIN Region transit ASes present in the Internet Routing Table: 1930 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 71 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5241 Number of ARIN addresses announced to Internet: 1349039360 Equivalent to 80 /8s, 104 /16s and 181 /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: 275887 Total RIPE prefixes after maximum aggregation: 135893 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274845 Unique aggregates announced from the RIPE address blocks: 177313 RIPE Region origin ASes present in the Internet Routing Table: 28941 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12052 RIPE Region transit ASes present in the Internet Routing Table: 4000 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 32 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12551 Number of RIPE addresses announced to Internet: 731998208 Equivalent to 43 /8s, 161 /16s and 104 /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: 124336 Total LACNIC prefixes after maximum aggregation: 29813 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120662 Unique aggregates announced from the LACNIC address blocks: 49124 LACNIC Region origin ASes present in the Internet Routing Table: 11264 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2653 LACNIC Region transit ASes present in the Internet Routing Table: 2529 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 37 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9223 Number of LACNIC addresses announced to Internet: 171074304 Equivalent to 10 /8s, 50 /16s and 99 /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: 33257 Total AfriNIC prefixes after maximum aggregation: 6737 AfriNIC Deaggregation factor: 4.94 Prefixes being announced from the AfriNIC address blocks: 45951 Unique aggregates announced from the AfriNIC address blocks: 13961 AfriNIC Region origin ASes present in the Internet Routing Table: 1922 AfriNIC Prefixes per ASN: 23.91 AfriNIC Region origin ASes announcing only one prefix: 690 AfriNIC Region transit ASes present in the Internet Routing Table: 376 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1288 Number of AfriNIC addresses announced to Internet: 104684032 Equivalent to 6 /8s, 61 /16s and 90 /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 6146 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4488 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4461 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 3289 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2905 863 520 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2740 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2187 434 193 TATACOMM-AS TATA Communications formerly Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13676 40962 5268 AMAZON-02, US 11492 4812 319 611 CABLEONE, US 7155 3856 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3506 8769 858 COGENT-174, US 22773 3342 3032 167 ASN-CXA-ALL-CCI-22773-RDC, US 749 3223 54766 2474 DNIC-AS-00749, US 396982 3196 3855 432 GOOGLE-CLOUD-PLATFORM, US 16625 2932 1239 2185 AKAMAI-AS, US 4155 2865 217 1728 USDA-1, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7595 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3938 3395 123 AKAMAI-ASN1, NL 9009 3785 360 2107 M247, RO 12389 3118 2317 872 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 581 TELLCOM-AS, TR 212238 2325 164 1693 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1558 1852 14 TE-AS TE-AS, EG 203020 1475 164 649 HOSTROYALE, IN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12284 3255 573 UNINET, MX 10620 3512 481 1022 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, 6147 1196 371 22 Telefonica del Peru S.A.A., PE 22884 1066 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 11664 1056 278 33 Techtel LMDS Comunicaciones Interactivas 6503 1019 373 162 Axtel, S.A.B. de C.V., MX Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1690 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36903 1249 554 96 MT-MPLS, MA 36992 1220 1482 322 ETISALAT-MISR, EG 36935 822 520 43 Vodafone-, EG 37069 702 1112 11 MOBINIL, EG 24863 660 389 22 LINKdotNET-AS, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36914 567 82 3 KENET-AS, KE 15399 535 56 53 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13676 40962 5268 AMAZON-02, US 8151 12284 3255 573 UNINET, MX 9808 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7595 1712 148 UNI2-AS, ES 7545 6146 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4812 319 611 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4488 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4461 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3938 3395 123 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12284 11711 UNINET, MX 9808 11823 11707 CHINAMOBILE-CN China Mobile Communications Grou 12479 7595 7447 UNI2-AS, ES 7545 6146 5525 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4488 4462 FPT-AS-AP FPT Telecom Company, VN 11492 4812 4201 CABLEONE, US 9498 4461 4150 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3891 VIETEL-AS-AP Viettel Group, VN 20940 3938 3815 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/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/Singapore/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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:92 /12:298 /13:578 /14:1199 /15:2115 /16:13719 /17:8147 /18:13402 /19:24347 /20:43448 /21:51479 /22:111060 /23:102362 /24:614120 /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 6538 7595 UNI2-AS, ES 8151 6508 12284 UNINET, MX 11492 3606 4812 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2815 3856 VIASAT-SP-BACKBONE, US 22773 2493 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2334 13676 AMAZON-02, US 30036 2269 2610 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2199 3512 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2408 2:1497 3:851 4:10 5:4743 6:163 7:6 8:1554 9:1 11:172 12:1337 13:458 14:2555 15:365 16:286 17:382 18:898 20:558 21:4 22:188 23:7675 24:2675 25:2 27:2814 29:19 31:3340 32:35 33:1 34:83 35:256 36:3608 37:4556 38:9461 39:910 40:253 41:4144 42:1971 43:2725 44:369 45:18619 46:5104 47:337 49:1881 50:1943 51:591 52:1554 54:324 55:1110 56:11 57:270 58:2206 59:1299 60:1174 61:2831 62:2939 63:1793 64:5507 65:2164 66:4685 67:3091 68:1086 69:3874 70:1042 71:621 72:2849 74:2775 75:1503 76:608 77:2763 78:1899 79:1705 80:2198 81:2074 82:3177 83:1431 84:1888 85:3455 86:1085 87:2115 88:1311 89:4420 90:777 91:8404 92:2755 93:2945 94:4074 95:4407 96:1442 97:309 98:955 99:696 100:71 101:1437 102:3923 103:32849 104:5212 105:741 106:970 107:2637 108:1251 109:4167 110:2244 111:3304 112:2235 113:1849 114:1958 115:2213 116:2081 117:2581 118:2979 119:1926 120:2156 121:1323 122:2779 123:2235 124:1688 125:2903 126:91 128:1579 129:960 130:1276 131:2030 132:766 133:450 134:1639 135:350 136:1460 137:1128 138:2813 139:1583 140:1627 141:1517 142:1904 143:1983 144:1202 145:560 146:2169 147:2102 148:2708 149:2937 150:1246 151:2229 152:2088 153:525 154:7564 155:1842 156:3056 157:1939 158:1345 159:2506 160:3633 161:1878 162:3854 163:2247 164:1868 165:2326 166:1521 167:2018 168:3950 169:776 170:5134 171:1007 172:4218 173:3386 174:919 175:1326 176:3723 177:4723 178:3944 179:2312 180:2729 181:4117 182:3503 183:2272 184:2065 185:21569 186:5225 187:4630 188:4274 189:4324 190:9556 191:1506 192:11309 193:9465 194:7771 195:5575 196:3264 197:3149 198:6063 199:8599 200:8086 201:6373 202:10382 203:10640 204:4642 205:3590 206:4473 207:3509 208:4262 209:5114 210:4535 211:2591 212:4548 213:3808 214:1020 215:46 216:6748 217:3208 218:1363 219:394 220:2145 221:1191 222:743 223:2686 End of report