IPv4 R&E Routing Table Report 23:05 GMT Tue 22 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: 988495 Prefixes after maximum aggregation (per Origin AS): 382950 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487311 Number of IPv4 prefixes with a valid ROA: 556111 Number of IPv4 prefixes with an invalid ROA: 585 Number of IPv4 prefixes with no ROA: 431799 Total ASes present in the Internet Routing Table: 76917 Prefixes per ASN: 12.85 Origin-only ASes present in the Internet Routing Table: 65914 Origin ASes announcing only one prefix: 26906 Transit ASes present in the Internet Routing Table: 11003 Transit-only ASes present in the Internet Routing Table: 544 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: 52 Max AS path prepend of ASN ( 37447) 36 Prefixes from unregistered ASNs in the Routing Table: 1163 Number of instances of unregistered ASNs: 1198 Number of 32-bit ASNs allocated by the RIRs: 46908 Number of 32-bit ASNs visible in the Routing Table: 38557 Prefixes from 32-bit ASNs in the Routing Table: 206398 Number of bogon 32-bit ASNs visible in the Routing Table: 86 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 456 Number of addresses announced to Internet: 3107051264 Equivalent to 185 /8s, 49 /16s and 215 /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: 322217 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262567 Total APNIC prefixes after maximum aggregation: 77727 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 253496 Unique aggregates announced from the APNIC address blocks: 105004 APNIC Region origin ASes present in the Internet Routing Table: 14680 APNIC Prefixes per ASN: 17.27 APNIC Region origin ASes announcing only one prefix: 4467 APNIC Region transit ASes present in the Internet Routing Table: 1977 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: 10238 Number of APNIC addresses announced to Internet: 749263104 Equivalent to 44 /8s, 168 /16s and 217 /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: 290052 Total ARIN prefixes after maximum aggregation: 131859 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291718 Unique aggregates announced from the ARIN address blocks: 141289 ARIN Region origin ASes present in the Internet Routing Table: 19199 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7037 ARIN Region transit ASes present in the Internet Routing Table: 1926 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5251 Number of ARIN addresses announced to Internet: 1349365248 Equivalent to 80 /8s, 109 /16s and 174 /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: 275881 Total RIPE prefixes after maximum aggregation: 135999 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274871 Unique aggregates announced from the RIPE address blocks: 177446 RIPE Region origin ASes present in the Internet Routing Table: 28944 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12065 RIPE Region transit ASes present in the Internet Routing Table: 4012 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: 12565 Number of RIPE addresses announced to Internet: 732128512 Equivalent to 43 /8s, 163 /16s and 101 /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: 124304 Total LACNIC prefixes after maximum aggregation: 29825 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120627 Unique aggregates announced from the LACNIC address blocks: 49088 LACNIC Region origin ASes present in the Internet Routing Table: 11254 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2643 LACNIC Region transit ASes present in the Internet Routing Table: 2518 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: 9213 Number of LACNIC addresses announced to Internet: 171069440 Equivalent to 10 /8s, 50 /16s and 80 /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: 34528 Total AfriNIC prefixes after maximum aggregation: 6774 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47327 Unique aggregates announced from the AfriNIC address blocks: 14100 AfriNIC Region origin ASes present in the Internet Routing Table: 1925 AfriNIC Prefixes per ASN: 24.59 AfriNIC Region origin ASes announcing only one prefix: 694 AfriNIC Region transit ASes present in the Internet Routing Table: 374 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 41 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1290 Number of AfriNIC addresses announced to Internet: 104974592 Equivalent to 6 /8s, 65 /16s and 201 /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 12031 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6153 840 620 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4480 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3919 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3700 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3290 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2910 863 508 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2740 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2187 434 196 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 13678 40975 5282 AMAZON-02, US 11492 4813 319 611 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3502 8771 857 COGENT-174, US 22773 3341 3032 167 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3197 3856 433 GOOGLE-CLOUD-PLATFORM, US 16625 2930 1238 2181 AKAMAI-AS, US 4155 2873 218 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 7593 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3919 3395 123 AKAMAI-ASN1, NL 9009 3787 360 2109 M247, RO 12389 3119 2317 872 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2321 164 1689 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1588 1852 14 TE-AS TE-AS, EG 203020 1476 163 649 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 12309 3259 574 UNINET, MX 10620 3484 474 1027 Telmex Colombia S.A., CO 13999 2527 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 11664 1066 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1066 68 368 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1020 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 1728 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1309 1488 357 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1227 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 832 520 43 Vodafone-, EG 36914 580 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 532 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 13678 40975 5282 AMAZON-02, US 8151 12309 3259 574 UNINET, MX 9808 12031 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7593 1712 148 UNI2-AS, ES 7545 6153 840 620 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4813 319 611 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4480 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3919 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 12031 11915 CHINAMOBILE-CN China Mobile Communications Grou 8151 12309 11735 UNINET, MX 12479 7593 7445 UNI2-AS, ES 7545 6153 5533 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4480 4454 FPT-AS-AP FPT Telecom Company, VN 11492 4813 4202 CABLEONE, US 9498 4463 4152 BBIL-AP BHARTI Airtel Ltd., IN 7552 3919 3892 VIETEL-AS-AP Viettel Group, VN 20940 3919 3796 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 /14:1200 /15:2127 /16:13752 /17:8157 /18:13421 /19:24399 /20:43828 /21:51508 /22:111571 /23:102435 /24:615058 /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 6541 7593 UNI2-AS, ES 8151 6527 12309 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 2492 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2358 13678 AMAZON-02, US 30036 2272 2613 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3484 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) ---------------------------------------------- 1:2410 2:1491 3:854 4:10 5:4762 6:163 7:6 8:1554 9:1 11:172 12:1337 13:463 14:2573 15:365 16:286 17:377 18:897 20:558 21:4 22:188 23:7686 24:2675 25:2 27:2797 29:19 31:3348 32:35 33:1 34:83 35:257 36:3761 37:4562 38:9464 39:926 40:251 41:4237 42:1974 43:2725 44:371 45:18673 46:5078 47:336 49:1881 50:2006 51:591 52:1550 54:323 55:1112 56:11 57:271 58:2208 59:1301 60:1173 61:2830 62:2969 63:1790 64:5528 65:2163 66:4704 67:3093 68:1083 69:3876 70:1041 71:619 72:2852 74:2781 75:1503 76:606 77:2759 78:1900 79:1696 80:2199 81:2049 82:3167 83:1436 84:1889 85:3456 86:1086 87:2123 88:1307 89:4431 90:777 91:8408 92:2706 93:2949 94:4062 95:4396 96:1447 97:310 98:955 99:695 100:71 101:1441 102:3874 103:32842 104:5217 105:797 106:972 107:2643 108:1256 109:4188 110:2241 111:3331 112:2257 113:1849 114:1952 115:2221 116:2080 117:2594 118:2978 119:1918 120:2162 121:1323 122:2785 123:2228 124:1691 125:2894 126:91 128:1584 129:959 130:1290 131:2032 132:766 133:450 134:1637 135:350 136:1446 137:1125 138:2820 139:1586 140:1629 141:1505 142:1907 143:1991 144:1200 145:563 146:2169 147:2102 148:2711 149:2935 150:1277 151:2228 152:2068 153:524 154:7612 155:1856 156:3084 157:1953 158:1353 159:2507 160:3636 161:1889 162:3848 163:2254 164:1870 165:2367 166:1521 167:2017 168:3979 169:779 170:5128 171:999 172:4241 173:3391 174:917 175:1330 176:3744 177:4696 178:3932 179:2311 180:2718 181:4132 182:3514 183:2279 184:2063 185:21568 186:5225 187:4657 188:4270 189:4327 190:9564 191:1492 192:11311 193:9473 194:7763 195:5579 196:3268 197:3197 198:6077 199:8607 200:8081 201:6383 202:10391 203:10649 204:4646 205:3591 206:4472 207:3515 208:4270 209:5127 210:4590 211:2592 212:4542 213:3814 214:1023 215:48 216:6733 217:3214 218:1365 219:393 220:2148 221:1192 222:743 223:2688 End of report