IPv4 R&E Routing Table Report 23:05 GMT Wed 27 Aug, 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: 994569 Prefixes after maximum aggregation (per Origin AS): 386519 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 491948 Number of IPv4 prefixes with a valid ROA: 565118 Number of IPv4 prefixes with an invalid ROA: 729 Number of IPv4 prefixes with no ROA: 428722 Total ASes present in the Internet Routing Table: 77157 Prefixes per ASN: 12.89 Origin-only ASes present in the Internet Routing Table: 66099 Origin ASes announcing only one prefix: 26993 Transit ASes present in the Internet Routing Table: 11058 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 31 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1091 Number of instances of unregistered ASNs: 1132 Number of 32-bit ASNs allocated by the RIRs: 47277 Number of 32-bit ASNs visible in the Routing Table: 38838 Prefixes from 32-bit ASNs in the Routing Table: 209060 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: 421 Number of addresses announced to Internet: 3107222784 Equivalent to 185 /8s, 52 /16s and 117 /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: 323824 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265745 Total APNIC prefixes after maximum aggregation: 78652 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256278 Unique aggregates announced from the APNIC address blocks: 105204 APNIC Region origin ASes present in the Internet Routing Table: 14742 APNIC Prefixes per ASN: 17.38 APNIC Region origin ASes announcing only one prefix: 4472 APNIC Region transit ASes present in the Internet Routing Table: 1992 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10305 Number of APNIC addresses announced to Internet: 750030848 Equivalent to 44 /8s, 180 /16s and 144 /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: 290930 Total ARIN prefixes after maximum aggregation: 132897 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293028 Unique aggregates announced from the ARIN address blocks: 142278 ARIN Region origin ASes present in the Internet Routing Table: 19249 ARIN Prefixes per ASN: 15.22 ARIN Region origin ASes announcing only one prefix: 7061 ARIN Region transit ASes present in the Internet Routing Table: 1919 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5301 Number of ARIN addresses announced to Internet: 1349544192 Equivalent to 80 /8s, 112 /16s and 105 /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: 277700 Total RIPE prefixes after maximum aggregation: 137231 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276917 Unique aggregates announced from the RIPE address blocks: 179304 RIPE Region origin ASes present in the Internet Routing Table: 29037 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12099 RIPE Region transit ASes present in the Internet Routing Table: 4023 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12668 Number of RIPE addresses announced to Internet: 732263680 Equivalent to 43 /8s, 165 /16s and 117 /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: 124322 Total LACNIC prefixes after maximum aggregation: 30246 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120536 Unique aggregates announced from the LACNIC address blocks: 49360 LACNIC Region origin ASes present in the Internet Routing Table: 11285 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2645 LACNIC Region transit ASes present in the Internet Routing Table: 2547 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9246 Number of LACNIC addresses announced to Internet: 170739712 Equivalent to 10 /8s, 45 /16s and 72 /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: 34781 Total AfriNIC prefixes after maximum aggregation: 6778 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 47389 Unique aggregates announced from the AfriNIC address blocks: 15433 AfriNIC Region origin ASes present in the Internet Routing Table: 1953 AfriNIC Prefixes per ASN: 24.26 AfriNIC Region origin ASes announcing only one prefix: 716 AfriNIC Region transit ASes present in the Internet Routing Table: 375 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1318 Number of AfriNIC addresses announced to Internet: 104406784 Equivalent to 6 /8s, 57 /16s and 31 /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 12918 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6138 838 615 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4399 348 27 FPT-AS-AP FPT Telecom Company, VN 7552 3941 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3664 1044 68 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2974 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2919 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2177 427 182 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 14000 40852 5379 AMAZON-02, US 11492 4744 315 801 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3651 1320 82 SHAW, CA 22773 3353 3034 180 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3219 3858 437 GOOGLE-CLOUD-PLATFORM, US 174 3179 8759 846 COGENT-174, US 4155 2955 230 1744 USDA-1, US 16625 2902 1229 2167 AKAMAI-AS, 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 7509 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3907 3395 125 AKAMAI-ASN1, NL 9009 3866 366 2185 M247, RO 12389 3118 2315 865 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 585 TELLCOM-AS, TR 212238 2341 167 1708 CDNEXT, GB 203020 1835 221 843 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1603 1852 14 TE-AS TE-AS, EG 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 12288 3269 565 UNINET, MX 10620 3485 472 1050 Telmex Colombia S.A., CO 13999 2531 511 348 Mega Cable, S.A. de C.V., MX 11830 1982 369 64 Instituto Costarricense de Electricidad y 28573 1370 2434 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1181 371 22 Telefonica del Peru S.A.A., PE 11664 1089 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1054 67 377 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1009 2487 55 TIM SA, BR 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 1777 660 28 RAYA-AS, EG 29571 1498 94 37 ORANGE-COTE-IVOIRE, CI 36992 1420 1495 374 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1241 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 971 520 41 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 557 82 3 KENET-AS, KE 15399 548 56 54 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 14000 40852 5379 AMAZON-02, US 9808 12918 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12288 3269 565 UNINET, MX 12479 7509 1711 150 UNI2-AS, ES 7545 6138 838 615 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4744 315 801 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4399 348 27 FPT-AS-AP FPT Telecom Company, VN 7552 3941 1332 27 VIETEL-AS-AP Viettel Group, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 12918 12804 CHINAMOBILE-CN China Mobile Communications Grou 8151 12288 11723 UNINET, MX 12479 7509 7359 UNI2-AS, ES 7545 6138 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4399 4372 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4744 3943 CABLEONE, US 7552 3941 3914 VIETEL-AS-AP Viettel Group, VN 20940 3907 3782 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 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 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 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE Complete listing at https://bgp.nsrc.org/REN/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 /13:576 /14:1199 /15:2124 /16:13731 /17:8133 /18:13387 /19:24460 /20:44170 /21:51679 /22:111993 /23:102894 /24:619762 /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 6500 12288 UNINET, MX 12479 6462 7509 UNI2-AS, ES 11492 3560 4744 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3448 3651 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2503 3353 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2404 14000 AMAZON-02, US 30036 2316 2659 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2205 3485 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) ---------------------------------------------- 1:2420 2:1503 3:923 4:10 5:4814 6:156 7:6 8:1542 9:4 11:172 12:1255 13:475 14:2605 15:388 16:285 17:380 18:900 20:565 21:4 22:188 23:7812 24:2659 25:2 27:2802 29:19 31:3361 32:29 33:1 34:84 35:262 36:4305 37:4545 38:9346 39:991 40:263 41:4250 42:1950 43:2730 44:378 45:18818 46:5101 47:342 49:1983 50:2060 51:591 52:1565 54:335 55:1103 56:11 57:283 58:2277 59:1291 60:1182 61:2901 62:3032 63:1774 64:5596 65:2142 66:4797 67:3089 68:1066 69:3883 70:1037 71:627 72:2856 74:2793 75:1505 76:601 77:2776 78:1895 79:1745 80:2228 81:2080 82:3256 83:1442 84:1916 85:3476 86:1127 87:2124 88:1319 89:4470 90:790 91:8417 92:2766 93:2976 94:4145 95:4430 96:1447 97:310 98:953 99:724 100:71 101:1473 102:3918 103:32825 104:5303 105:759 106:878 107:2652 108:1234 109:4181 110:2241 111:3588 112:2476 113:1838 114:1978 115:2188 116:2091 117:2702 118:3019 119:1950 120:2194 121:1326 122:2802 123:2220 124:1709 125:2910 126:91 128:1554 129:959 130:1282 131:2065 132:784 133:459 134:1623 135:358 136:1481 137:1127 138:2819 139:1598 140:1613 141:1541 142:1901 143:2001 144:1200 145:585 146:2173 147:2102 148:2719 149:2898 150:1265 151:2411 152:2126 153:563 154:7210 155:1976 156:3145 157:1964 158:1474 159:2539 160:3597 161:1955 162:3897 163:2283 164:1884 165:2512 166:1556 167:2074 168:3864 169:771 170:5252 171:997 172:4232 173:3398 174:904 175:1327 176:3787 177:4811 178:4021 179:2316 180:2730 181:4186 182:3621 183:2362 184:2055 185:21611 186:5340 187:4595 188:4308 189:4325 190:9400 191:1558 192:11343 193:9468 194:7791 195:5646 196:3291 197:3218 198:6094 199:8640 200:8083 201:6360 202:10416 203:10610 204:4559 205:3625 206:4464 207:3523 208:4269 209:5148 210:4663 211:2651 212:4623 213:3823 214:1041 215:51 216:6805 217:3296 218:1440 219:393 220:2149 221:1208 222:747 223:2826 End of report