IPv4 R&E Routing Table Report 23:05 GMT Thu 25 Sep, 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: 1002279 Prefixes after maximum aggregation (per Origin AS): 388895 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495586 Number of IPv4 prefixes with a valid ROA: 572517 Number of IPv4 prefixes with an invalid ROA: 1009 Number of IPv4 prefixes with no ROA: 428753 Total ASes present in the Internet Routing Table: 77285 Prefixes per ASN: 12.97 Origin-only ASes present in the Internet Routing Table: 66238 Origin ASes announcing only one prefix: 27056 Transit ASes present in the Internet Routing Table: 11047 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 29 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 97 Max AS path prepend of ASN ( 37447) 77 Prefixes from unregistered ASNs in the Routing Table: 1072 Number of instances of unregistered ASNs: 1103 Number of 32-bit ASNs allocated by the RIRs: 47551 Number of 32-bit ASNs visible in the Routing Table: 39007 Prefixes from 32-bit ASNs in the Routing Table: 211397 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 429 Number of addresses announced to Internet: 3111511296 Equivalent to 185 /8s, 117 /16s and 229 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 326357 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269383 Total APNIC prefixes after maximum aggregation: 79423 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 259294 Unique aggregates announced from the APNIC address blocks: 105799 APNIC Region origin ASes present in the Internet Routing Table: 14785 APNIC Prefixes per ASN: 17.54 APNIC Region origin ASes announcing only one prefix: 4469 APNIC Region transit ASes present in the Internet Routing Table: 1988 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: 10356 Number of APNIC addresses announced to Internet: 751198720 Equivalent to 44 /8s, 198 /16s and 98 /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: 293133 Total ARIN prefixes after maximum aggregation: 133580 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 294591 Unique aggregates announced from the ARIN address blocks: 142878 ARIN Region origin ASes present in the Internet Routing Table: 19290 ARIN Prefixes per ASN: 15.27 ARIN Region origin ASes announcing only one prefix: 7087 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: 49 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5336 Number of ARIN addresses announced to Internet: 1352638976 Equivalent to 80 /8s, 159 /16s and 162 /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: 279042 Total RIPE prefixes after maximum aggregation: 138105 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278623 Unique aggregates announced from the RIPE address blocks: 180454 RIPE Region origin ASes present in the Internet Routing Table: 29063 RIPE Prefixes per ASN: 9.59 RIPE Region origin ASes announcing only one prefix: 12109 RIPE Region transit ASes present in the Internet Routing Table: 4016 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: 12728 Number of RIPE addresses announced to Internet: 732908032 Equivalent to 43 /8s, 175 /16s and 74 /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: 124540 Total LACNIC prefixes after maximum aggregation: 30246 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120773 Unique aggregates announced from the LACNIC address blocks: 49426 LACNIC Region origin ASes present in the Internet Routing Table: 11293 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2672 LACNIC Region transit ASes present in the Internet Routing Table: 2528 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: 9256 Number of LACNIC addresses announced to Internet: 170710272 Equivalent to 10 /8s, 44 /16s and 213 /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: 35109 Total AfriNIC prefixes after maximum aggregation: 6839 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 48569 Unique aggregates announced from the AfriNIC address blocks: 16651 AfriNIC Region origin ASes present in the Internet Routing Table: 1964 AfriNIC Prefixes per ASN: 24.73 AfriNIC Region origin ASes announcing only one prefix: 719 AfriNIC Region transit ASes present in the Internet Routing Table: 382 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 81 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1331 Number of AfriNIC addresses announced to Internet: 103822336 Equivalent to 6 /8s, 48 /16s and 52 /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 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6162 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4475 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3742 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3121 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2925 862 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2189 432 186 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 14375 40906 5402 AMAZON-02, US 11492 4746 320 804 CABLEONE, US 22773 3948 3045 314 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3678 1320 82 SHAW, CA 396982 3267 4824 459 GOOGLE-CLOUD-PLATFORM, US 174 3253 8770 875 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3058 237 1707 USDA-1, US 16625 2909 1240 2174 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 7456 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3951 370 2222 M247, RO 20940 3908 3395 124 AKAMAI-ASN1, NL 12389 3122 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2439 174 1763 CDNEXT, GB 34984 2414 363 572 TELLCOM-AS, TR 203020 1867 198 870 HOSTROYALE, IN 8452 1620 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 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 12361 3276 575 UNINET, MX 10620 3492 473 1048 Telmex Colombia S.A., CO 13999 2542 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1230 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1058 67 366 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1005 2486 56 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 1846 652 28 RAYA-AS, EG 36992 1509 1498 384 ETISALAT-MISR, EG 29571 1280 102 53 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1247 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1077 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 575 82 3 KENET-AS, KE 15399 549 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 14375 40906 5402 AMAZON-02, US 9808 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12361 3276 575 UNINET, MX 12479 7456 1711 149 UNI2-AS, ES 7545 6162 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4746 320 804 CABLEONE, US 18403 4475 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 1332 28 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 13674 13558 CHINAMOBILE-CN China Mobile Communications Grou 8151 12361 11786 UNINET, MX 12479 7456 7307 UNI2-AS, ES 7545 6162 5559 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4475 4449 FPT-AS-AP FPT Telecom Company, VN 9498 4469 4159 BBIL-AP BHARTI Airtel Ltd., IN 11492 4746 3942 CABLEONE, US 7552 3951 3923 VIETEL-AS-AP Viettel Group, VN 20940 3908 3784 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 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 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, 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 /11:93 /12:301 /13:579 /14:1199 /15:2124 /16:13733 /17:8151 /18:13369 /19:24487 /20:44156 /21:51802 /22:112292 /23:103380 /24:626542 /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 6578 12361 UNINET, MX 12479 6427 7456 UNI2-AS, ES 11492 3560 4746 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3678 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2508 3948 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2449 14375 AMAZON-02, US 30036 2297 2638 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2210 3492 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) ---------------------------------------------- 1:2430 2:1531 3:940 4:10 5:4847 6:165 7:6 8:1534 9:6 11:172 12:1245 13:560 14:2633 15:401 16:304 17:388 18:907 20:573 21:4 22:188 23:7840 24:2650 25:2 27:2795 29:19 31:3353 32:31 33:1 34:84 35:272 36:4456 37:4529 38:9492 39:1091 40:293 41:4304 42:1975 43:2761 44:374 45:18962 46:5126 47:344 49:2023 50:2036 51:594 52:1606 54:365 55:1098 56:11 57:282 58:2277 59:1310 60:1188 61:2954 62:3043 63:1767 64:5619 65:2148 66:4892 67:3098 68:1086 69:3922 70:1041 71:630 72:2905 74:2818 75:1497 76:602 77:2771 78:1896 79:1758 80:2239 81:2098 82:3425 83:1456 84:1976 85:3510 86:1095 87:2123 88:1323 89:4503 90:813 91:8396 92:2778 93:2977 94:4184 95:4455 96:1471 97:312 98:953 99:762 100:71 101:1472 102:4124 103:32921 104:5361 105:777 106:880 107:2654 108:1210 109:4200 110:2251 111:3774 112:2649 113:1865 114:1994 115:2279 116:2101 117:2932 118:3060 119:1966 120:2263 121:1346 122:2816 123:2245 124:1711 125:2920 126:91 128:1571 129:959 130:1278 131:2109 132:780 133:460 134:1610 135:364 136:1485 137:1123 138:2791 139:1610 140:1636 141:1554 142:1906 143:2037 144:1283 145:625 146:2171 147:2115 148:2737 149:2910 150:1279 151:2504 152:2168 153:576 154:7514 155:2043 156:3477 157:2003 158:1420 159:2578 160:3561 161:1975 162:3930 163:2289 164:1920 165:2579 166:1562 167:2092 168:3805 169:773 170:5340 171:1008 172:4249 173:3411 174:903 175:1350 176:3814 177:4700 178:4216 179:2272 180:2762 181:4262 182:3728 183:2636 184:2055 185:21633 186:5386 187:4649 188:4281 189:4366 190:9688 191:1559 192:11375 193:9457 194:7785 195:5572 196:3269 197:3363 198:6096 199:8714 200:8096 201:6354 202:10431 203:10654 204:4571 205:3600 206:4502 207:3540 208:4277 209:5276 210:4697 211:2684 212:4798 213:3882 214:1043 215:52 216:6914 217:3328 218:1567 219:396 220:2193 221:1234 222:750 223:3025 End of report