IPv4 R&E Routing Table Report 23:05 GMT Thu 15 May, 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: 979735 Prefixes after maximum aggregation (per Origin AS): 378204 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 479359 Number of IPv4 prefixes with a valid ROA: 543741 Number of IPv4 prefixes with an invalid ROA: 380 Number of IPv4 prefixes with no ROA: 435614 Total ASes present in the Internet Routing Table: 76699 Prefixes per ASN: 12.77 Origin-only ASes present in the Internet Routing Table: 65758 Origin ASes announcing only one prefix: 26917 Transit ASes present in the Internet Routing Table: 10941 Transit-only ASes present in the Internet Routing Table: 544 Paths with bogon ASNs present in the IPv4 Routing Table: 25 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 79 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1021 Number of instances of unregistered ASNs: 1038 Number of 32-bit ASNs allocated by the RIRs: 46405 Number of 32-bit ASNs visible in the Routing Table: 38177 Prefixes from 32-bit ASNs in the Routing Table: 202655 Number of bogon 32-bit ASNs visible in the Routing Table: 42 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 475 Number of addresses announced to Internet: 3108383744 Equivalent to 185 /8s, 70 /16s and 44 /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: 320177 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 257550 Total APNIC prefixes after maximum aggregation: 76863 APNIC Deaggregation factor: 3.35 Prefixes being announced from the APNIC address blocks: 248712 Unique aggregates announced from the APNIC address blocks: 102944 APNIC Region origin ASes present in the Internet Routing Table: 14547 APNIC Prefixes per ASN: 17.10 APNIC Region origin ASes announcing only one prefix: 4411 APNIC Region transit ASes present in the Internet Routing Table: 1965 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 32 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10084 Number of APNIC addresses announced to Internet: 748380160 Equivalent to 44 /8s, 155 /16s and 96 /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: 288338 Total ARIN prefixes after maximum aggregation: 130416 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 289611 Unique aggregates announced from the ARIN address blocks: 138790 ARIN Region origin ASes present in the Internet Routing Table: 19204 ARIN Prefixes per ASN: 15.08 ARIN Region origin ASes announcing only one prefix: 7043 ARIN Region transit ASes present in the Internet Routing Table: 1927 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: 5200 Number of ARIN addresses announced to Internet: 1352196864 Equivalent to 80 /8s, 152 /16s and 227 /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: 273086 Total RIPE prefixes after maximum aggregation: 133837 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 271204 Unique aggregates announced from the RIPE address blocks: 174428 RIPE Region origin ASes present in the Internet Routing Table: 28899 RIPE Prefixes per ASN: 9.38 RIPE Region origin ASes announcing only one prefix: 12069 RIPE Region transit ASes present in the Internet Routing Table: 3965 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12431 Number of RIPE addresses announced to Internet: 730849536 Equivalent to 43 /8s, 143 /16s and 225 /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: 124177 Total LACNIC prefixes after maximum aggregation: 29674 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 119864 Unique aggregates announced from the LACNIC address blocks: 48926 LACNIC Region origin ASes present in the Internet Routing Table: 11237 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2702 LACNIC Region transit ASes present in the Internet Routing Table: 2514 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 29 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9190 Number of LACNIC addresses announced to Internet: 171712768 Equivalent to 10 /8s, 60 /16s and 33 /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: 35563 Total AfriNIC prefixes after maximum aggregation: 6781 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 49869 Unique aggregates announced from the AfriNIC address blocks: 13878 AfriNIC Region origin ASes present in the Internet Routing Table: 1902 AfriNIC Prefixes per ASN: 26.22 AfriNIC Region origin ASes announcing only one prefix: 692 AfriNIC Region transit ASes present in the Internet Routing Table: 374 Average AfriNIC Region AS path length visible: 5.6 Max AfriNIC Region AS path length visible: 79 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1272 Number of AfriNIC addresses announced to Internet: 105019392 Equivalent to 6 /8s, 66 /16s and 120 /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 10989 8756 96 CHINAMOBILE-CN China Mobile Communication 7545 6164 842 652 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4367 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4278 533 300 BBIL-AP BHARTI Airtel Ltd., IN 7552 3899 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3689 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3269 1869 101 VNPT-AS-VN VNPT Corp, VN 24560 2865 852 534 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 45090 2173 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 4755 2171 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 13378 40826 4981 AMAZON-02, US 11492 4727 313 592 CABLEONE, US 7155 3864 286 85 VIASAT-SP-BACKBONE, US 6327 3622 1320 81 SHAW, CA 174 3462 8750 909 COGENT-174, US 22773 3346 3015 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3243 54815 2494 DNIC-AS-00749, US 396982 3166 3852 416 GOOGLE-CLOUD-PLATFORM, US 16625 3029 1264 2227 AKAMAI-AS, US 36352 2787 228 854 AS-COLOCROSSING, 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 7692 1714 148 UNI2-AS, ES 39891 4797 293 62 ALJAWWALSTC-AS, SA 20940 3957 3395 123 AKAMAI-ASN1, NL 9009 3772 325 1957 M247, RO 12389 3070 2305 887 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2391 360 581 TELLCOM-AS, TR 212238 2142 150 1576 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1540 1852 14 TE-AS TE-AS, EG 62240 1421 94 736 CLOUVIDER Clouvider - Global ASN, GB 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 12099 3247 582 UNINET, MX 10620 3500 480 1019 Telmex Colombia S.A., CO 13999 2517 540 364 Mega Cable, S.A. de C.V., MX 11830 1996 369 64 Instituto Costarricense de Electricidad y 28573 1358 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1338 785 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1195 371 22 Telefonica del Peru S.A.A., PE 11664 1109 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1058 67 379 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1042 374 163 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 1778 632 28 RAYA-AS, EG 24863 1652 389 16 LINKdotNET-AS, EG 29571 1597 102 33 ORANGE-COTE-IVOIRE, CI 36992 1432 1519 280 ETISALAT-MISR, EG 36903 1247 553 103 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1040 523 45 Vodafone-, EG 20011 980 185 285 INTERNET-SOLUTIONS, ZA 36914 551 82 3 KENET-AS, KE 15399 545 57 60 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 13378 40826 4981 AMAZON-02, US 8151 12099 3247 582 UNINET, MX 9808 10989 8756 96 CHINAMOBILE-CN China Mobile Communication 12479 7692 1714 148 UNI2-AS, ES 7545 6164 842 652 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 293 62 ALJAWWALSTC-AS, SA 11492 4727 313 592 CABLEONE, US 18403 4367 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4278 533 300 BBIL-AP BHARTI Airtel Ltd., IN 20940 3957 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 12099 11517 UNINET, MX 9808 10989 10893 CHINAMOBILE-CN China Mobile Communications Grou 12479 7692 7544 UNI2-AS, ES 7545 6164 5512 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 4735 ALJAWWALSTC-AS, SA 18403 4367 4342 FPT-AS-AP FPT Telecom Company, VN 11492 4727 4135 CABLEONE, US 9498 4278 3978 BBIL-AP BHARTI Airtel Ltd., IN 7552 3899 3873 VIETEL-AS-AP Viettel Group, VN 20940 3957 3834 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 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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: 3491 CONSOLE-CONNECT-ASN, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.152.48.0/24 Origin: 46167 RESERVED, ZZ 23.152.48.0/24 Transit: 7018 ATT-INTERNET4, 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 /9:16 /10:41 /11:92 /12:299 /13:579 /14:1213 /15:2143 /16:13936 /17:8209 /18:13617 /19:24472 /20:43742 /21:51362 /22:111426 /23:101415 /24:607157 /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 6610 7692 UNI2-AS, ES 8151 6299 12099 UNINET, MX 11492 3533 4727 CABLEONE, US 39891 3489 4797 ALJAWWALSTC-AS, SA 6327 3417 3622 SHAW, CA 7155 2823 3864 VIASAT-SP-BACKBONE, US 22773 2499 3346 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2326 13378 AMAZON-02, US 30036 2227 2567 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2186 3500 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) ---------------------------------------------- 1:2334 2:1504 3:737 4:11 5:4680 6:158 7:6 8:1580 9:1 11:172 12:1366 13:412 14:2519 15:353 16:283 17:373 18:919 20:518 21:4 22:188 23:7509 24:2740 25:2 27:2748 29:19 31:3257 32:36 33:1 34:82 35:204 36:2906 37:4629 38:9149 39:910 40:169 41:4210 42:1968 43:2610 44:384 45:18606 46:5032 47:301 49:1931 50:1889 51:590 52:1554 54:315 55:1094 56:11 57:255 58:2207 59:1226 60:1167 61:2807 62:2918 63:1807 64:5462 65:2172 66:4621 67:3057 68:1117 69:3831 70:1066 71:624 72:2816 74:2763 75:1611 76:614 77:2703 78:1871 79:1752 80:2198 81:2067 82:3119 83:1424 84:1856 85:3418 86:1066 87:2152 88:1286 89:4367 90:774 91:8330 92:2690 93:2891 94:4050 95:4293 96:1418 97:312 98:980 99:686 100:72 101:1387 102:3920 103:32610 104:5027 105:764 106:1033 107:2644 108:1216 109:4077 110:2247 111:3323 112:2070 113:1789 114:1972 115:2159 116:2065 117:2602 118:2868 119:1953 120:1921 121:1367 122:2748 123:2157 124:1613 125:2850 126:91 128:1579 129:949 130:1284 131:1960 132:773 133:451 134:1535 135:332 136:1378 137:1115 138:2877 139:1592 140:1583 141:1502 142:1899 143:1744 144:1115 145:504 146:2157 147:2095 148:2686 149:2861 150:1085 151:1898 152:2080 153:497 154:8024 155:1962 156:3307 157:1890 158:1298 159:2446 160:3836 161:1877 162:3744 163:2130 164:1699 165:2194 166:1481 167:1901 168:4276 169:778 170:5078 171:1006 172:4458 173:3283 174:913 175:1306 176:3693 177:4677 178:3617 179:2256 180:2672 181:4063 182:3429 183:2135 184:2054 185:21528 186:5113 187:4434 188:4243 189:4261 190:9544 191:1469 192:11196 193:9474 194:7766 195:5509 196:3286 197:3654 198:6060 199:8473 200:8069 201:6342 202:10251 203:10487 204:4524 205:3564 206:4453 207:3459 208:4245 209:5150 210:4526 211:2541 212:4528 213:3715 214:1028 215:48 216:6698 217:3131 218:1340 219:397 220:2087 221:1084 222:716 223:2387 End of report