IPv4 R&E Routing Table Report 23:05 GMT Fri 18 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: 986725 Prefixes after maximum aggregation (per Origin AS): 382706 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 486864 Number of IPv4 prefixes with a valid ROA: 555548 Number of IPv4 prefixes with an invalid ROA: 770 Number of IPv4 prefixes with no ROA: 430407 Total ASes present in the Internet Routing Table: 76908 Prefixes per ASN: 12.83 Origin-only ASes present in the Internet Routing Table: 65889 Origin ASes announcing only one prefix: 26886 Transit ASes present in the Internet Routing Table: 11019 Transit-only ASes present in the Internet Routing Table: 554 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: 1196 Number of instances of unregistered ASNs: 1236 Number of 32-bit ASNs allocated by the RIRs: 46864 Number of 32-bit ASNs visible in the Routing Table: 38536 Prefixes from 32-bit ASNs in the Routing Table: 206126 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: 458 Number of addresses announced to Internet: 3106899968 Equivalent to 185 /8s, 47 /16s and 136 /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: 321868 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262204 Total APNIC prefixes after maximum aggregation: 77760 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 253123 Unique aggregates announced from the APNIC address blocks: 105005 APNIC Region origin ASes present in the Internet Routing Table: 14677 APNIC Prefixes per ASN: 17.25 APNIC Region origin ASes announcing only one prefix: 4471 APNIC Region transit ASes present in the Internet Routing Table: 1982 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: 749198848 Equivalent to 44 /8s, 167 /16s and 222 /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: 289758 Total ARIN prefixes after maximum aggregation: 131716 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291492 Unique aggregates announced from the ARIN address blocks: 140993 ARIN Region origin ASes present in the Internet Routing Table: 19191 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7029 ARIN Region transit ASes present in the Internet Routing Table: 1932 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: 5244 Number of ARIN addresses announced to Internet: 1349346304 Equivalent to 80 /8s, 109 /16s and 100 /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: 275812 Total RIPE prefixes after maximum aggregation: 135938 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274831 Unique aggregates announced from the RIPE address blocks: 177408 RIPE Region origin ASes present in the Internet Routing Table: 28950 RIPE Prefixes per ASN: 9.49 RIPE Region origin ASes announcing only one prefix: 12061 RIPE Region transit ASes present in the Internet Routing Table: 4002 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12557 Number of RIPE addresses announced to Internet: 732193536 Equivalent to 43 /8s, 164 /16s and 99 /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: 124357 Total LACNIC prefixes after maximum aggregation: 29801 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120696 Unique aggregates announced from the LACNIC address blocks: 49113 LACNIC Region origin ASes present in the Internet Routing Table: 11257 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2644 LACNIC Region transit ASes present in the Internet Routing Table: 2530 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9221 Number of LACNIC addresses announced to Internet: 171045888 Equivalent to 10 /8s, 49 /16s and 244 /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: 33398 Total AfriNIC prefixes after maximum aggregation: 6715 AfriNIC Deaggregation factor: 4.97 Prefixes being announced from the AfriNIC address blocks: 46125 Unique aggregates announced from the AfriNIC address blocks: 13955 AfriNIC Region origin ASes present in the Internet Routing Table: 1906 AfriNIC Prefixes per ASN: 24.20 AfriNIC Region origin ASes announcing only one prefix: 681 AfriNIC Region transit ASes present in the Internet Routing Table: 375 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: 1278 Number of AfriNIC addresses announced to Internet: 104862976 Equivalent to 6 /8s, 64 /16s and 21 /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 6158 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4500 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 2186 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 13682 40974 5272 AMAZON-02, US 11492 4813 319 611 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3497 8771 860 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 2933 1239 2183 AKAMAI-AS, US 4155 2865 217 1731 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 7600 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3927 3395 123 AKAMAI-ASN1, NL 9009 3784 360 2106 M247, RO 12389 3119 2317 872 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2402 361 582 TELLCOM-AS, TR 212238 2323 164 1691 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1545 1852 14 TE-AS TE-AS, EG 203020 1475 163 648 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 12306 3255 574 UNINET, MX 10620 3513 481 1019 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 1065 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 1733 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36903 1249 554 96 MT-MPLS, MA 36992 1221 1482 324 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 551 82 3 KENET-AS, KE 15399 545 57 61 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 13682 40974 5272 AMAZON-02, US 8151 12306 3255 574 UNINET, MX 9808 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7600 1712 148 UNI2-AS, ES 7545 6158 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4813 319 611 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4500 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4461 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3927 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 12306 11732 UNINET, MX 9808 11823 11707 CHINAMOBILE-CN China Mobile Communications Grou 12479 7600 7452 UNI2-AS, ES 7545 6158 5537 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4500 4474 FPT-AS-AP FPT Telecom Company, VN 11492 4813 4202 CABLEONE, US 9498 4461 4150 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3891 VIETEL-AS-AP Viettel Group, VN 20940 3927 3804 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 23.141.252.0/24 Origin: 26548 PUREVOLTAGE-INC, US 23.141.252.0/24 Transit: 6939 HURRICANE, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, 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 /14:1200 /15:2124 /16:13732 /17:8160 /18:13417 /19:24377 /20:43492 /21:51488 /22:111090 /23:102355 /24:614251 /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 6542 7600 UNI2-AS, ES 8151 6526 12306 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 2493 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2342 13682 AMAZON-02, US 30036 2270 2611 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2200 3513 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) ---------------------------------------------- 1:2416 2:1494 3:855 4:10 5:4765 6:163 7:6 8:1554 9:1 11:172 12:1336 13:455 14:2560 15:365 16:286 17:383 18:896 20:558 21:4 22:188 23:7675 24:2675 25:2 27:2804 29:19 31:3343 32:35 33:1 34:83 35:257 36:3640 37:4559 38:9439 39:911 40:253 41:4147 42:1982 43:2722 44:368 45:18658 46:5084 47:336 49:1875 50:1943 51:591 52:1553 54:327 55:1110 56:11 57:271 58:2208 59:1296 60:1174 61:2830 62:2941 63:1792 64:5522 65:2164 66:4695 67:3092 68:1084 69:3872 70:1042 71:622 72:2848 74:2777 75:1503 76:608 77:2757 78:1894 79:1691 80:2199 81:2046 82:3173 83:1434 84:1879 85:3457 86:1086 87:2122 88:1312 89:4418 90:778 91:8403 92:2699 93:2942 94:4069 95:4396 96:1445 97:310 98:955 99:696 100:71 101:1437 102:3877 103:32835 104:5210 105:770 106:970 107:2639 108:1253 109:4170 110:2244 111:3309 112:2235 113:1851 114:1955 115:2212 116:2080 117:2582 118:2979 119:1917 120:2156 121:1323 122:2784 123:2228 124:1692 125:2904 126:91 128:1579 129:963 130:1289 131:2031 132:764 133:450 134:1637 135:350 136:1450 137:1122 138:2818 139:1580 140:1633 141:1516 142:1904 143:1992 144:1199 145:562 146:2163 147:2099 148:2708 149:2935 150:1246 151:2235 152:2066 153:525 154:7569 155:1849 156:3077 157:1957 158:1344 159:2508 160:3641 161:1878 162:3857 163:2243 164:1869 165:2329 166:1522 167:2023 168:3985 169:781 170:5134 171:1006 172:4219 173:3391 174:918 175:1327 176:3722 177:4726 178:3928 179:2310 180:2729 181:4130 182:3506 183:2272 184:2064 185:21573 186:5232 187:4661 188:4270 189:4326 190:9558 191:1504 192:11306 193:9467 194:7770 195:5576 196:3275 197:3158 198:6073 199:8593 200:8088 201:6382 202:10380 203:10640 204:4643 205:3604 206:4473 207:3510 208:4261 209:5126 210:4533 211:2590 212:4549 213:3811 214:1023 215:46 216:6748 217:3211 218:1358 219:394 220:2144 221:1190 222:742 223:2687 End of report