IPv4 R&E Routing Table Report 23:05 GMT Tue 15 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: 985057 Prefixes after maximum aggregation (per Origin AS): 382568 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 486533 Number of IPv4 prefixes with a valid ROA: 554223 Number of IPv4 prefixes with an invalid ROA: 670 Number of IPv4 prefixes with no ROA: 430164 Total ASes present in the Internet Routing Table: 76872 Prefixes per ASN: 12.81 Origin-only ASes present in the Internet Routing Table: 65866 Origin ASes announcing only one prefix: 26874 Transit ASes present in the Internet Routing Table: 11006 Transit-only ASes present in the Internet Routing Table: 552 Paths with bogon ASNs present in the IPv4 Routing Table: 31 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: 1158 Number of instances of unregistered ASNs: 1195 Number of 32-bit ASNs allocated by the RIRs: 46832 Number of 32-bit ASNs visible in the Routing Table: 38512 Prefixes from 32-bit ASNs in the Routing Table: 205763 Number of bogon 32-bit ASNs visible in the Routing Table: 90 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 467 Number of addresses announced to Internet: 3106039040 Equivalent to 185 /8s, 34 /16s and 101 /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: 321539 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 261851 Total APNIC prefixes after maximum aggregation: 77807 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 252799 Unique aggregates announced from the APNIC address blocks: 105227 APNIC Region origin ASes present in the Internet Routing Table: 14672 APNIC Prefixes per ASN: 17.23 APNIC Region origin ASes announcing only one prefix: 4467 APNIC Region transit ASes present in the Internet Routing Table: 1979 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: 10229 Number of APNIC addresses announced to Internet: 749157120 Equivalent to 44 /8s, 167 /16s and 59 /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: 289207 Total ARIN prefixes after maximum aggregation: 131692 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291130 Unique aggregates announced from the ARIN address blocks: 140821 ARIN Region origin ASes present in the Internet Routing Table: 19168 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7022 ARIN Region transit ASes present in the Internet Routing Table: 1917 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: 5234 Number of ARIN addresses announced to Internet: 1349505280 Equivalent to 80 /8s, 111 /16s and 209 /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: 275732 Total RIPE prefixes after maximum aggregation: 135745 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274562 Unique aggregates announced from the RIPE address blocks: 176953 RIPE Region origin ASes present in the Internet Routing Table: 28936 RIPE Prefixes per ASN: 9.49 RIPE Region origin ASes announcing only one prefix: 12053 RIPE Region transit ASes present in the Internet Routing Table: 4001 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: 12542 Number of RIPE addresses announced to Internet: 731519744 Equivalent to 43 /8s, 154 /16s and 27 /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: 123880 Total LACNIC prefixes after maximum aggregation: 29823 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 120239 Unique aggregates announced from the LACNIC address blocks: 49126 LACNIC Region origin ASes present in the Internet Routing Table: 11261 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: 2539 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9223 Number of LACNIC addresses announced to Internet: 170993408 Equivalent to 10 /8s, 49 /16s and 39 /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: 33229 Total AfriNIC prefixes after maximum aggregation: 6733 AfriNIC Deaggregation factor: 4.94 Prefixes being announced from the AfriNIC address blocks: 45860 Unique aggregates announced from the AfriNIC address blocks: 13986 AfriNIC Region origin ASes present in the Internet Routing Table: 1917 AfriNIC Prefixes per ASN: 23.92 AfriNIC Region origin ASes announcing only one prefix: 687 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: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1284 Number of AfriNIC addresses announced to Internet: 104605440 Equivalent to 6 /8s, 60 /16s and 39 /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 11817 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6144 839 620 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4461 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4456 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3913 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3700 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3288 1869 101 VNPT-AS-VN VNPT Corp, VN 24560 2902 862 519 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2653 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2189 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 13663 40959 5264 AMAZON-02, US 11492 4789 317 607 CABLEONE, US 7155 3856 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3521 8770 853 COGENT-174, US 22773 3342 3032 167 ASN-CXA-ALL-CCI-22773-RDC, US 749 3225 54767 2476 DNIC-AS-00749, US 396982 3194 3854 430 GOOGLE-CLOUD-PLATFORM, US 16625 2933 1239 2186 AKAMAI-AS, US 4155 2859 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 7630 1713 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3951 3395 123 AKAMAI-ASN1, NL 9009 3769 357 2093 M247, RO 12389 3116 2317 872 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 581 TELLCOM-AS, TR 212238 2327 166 1697 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1558 1852 14 TE-AS TE-AS, EG 203020 1474 164 648 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 12307 3255 574 UNINET, MX 10620 3512 481 1022 Telmex Colombia S.A., CO 13999 2526 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1368 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1344 786 204 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1196 371 22 Telefonica del Peru S.A.A., PE 22884 1063 68 378 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 11664 1056 278 33 Techtel LMDS Comunicaciones Interactivas 6503 1022 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 1685 633 33 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36903 1249 554 96 MT-MPLS, MA 36992 1206 1477 333 ETISALAT-MISR, EG 36935 822 520 43 Vodafone-, EG 37069 702 1112 11 MOBINIL, EG 24863 655 389 22 LINKdotNET-AS, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36914 566 82 3 KENET-AS, KE 15399 535 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 13663 40959 5264 AMAZON-02, US 8151 12307 3255 574 UNINET, MX 9808 11817 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7630 1713 150 UNI2-AS, ES 7545 6144 839 620 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4789 317 607 CABLEONE, US 9498 4461 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4456 347 26 FPT-AS-AP FPT Telecom Company, VN 20940 3951 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 12307 11733 UNINET, MX 9808 11817 11701 CHINAMOBILE-CN China Mobile Communications Grou 12479 7630 7480 UNI2-AS, ES 7545 6144 5524 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4456 4430 FPT-AS-AP FPT Telecom Company, VN 11492 4789 4182 CABLEONE, US 9498 4461 4150 BBIL-AP BHARTI Airtel Ltd., IN 7552 3913 3886 VIETEL-AS-AP Viettel Group, VN 20940 3951 3828 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, US 23.147.225.0/24 Origin: 27392 639-DATACENTERS, US 23.147.225.0/24 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 /13:579 /14:1199 /15:2114 /16:13718 /17:8152 /18:13406 /19:24338 /20:43442 /21:51407 /22:110902 /23:102299 /24:613040 /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 6570 7630 UNI2-AS, ES 8151 6530 12307 UNINET, MX 11492 3583 4789 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2815 3856 VIASAT-SP-BACKBONE, US 22773 2493 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2342 13663 AMAZON-02, US 30036 2268 2609 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2199 3512 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) ---------------------------------------------- 1:2406 2:1495 3:851 4:10 5:4734 6:163 7:6 8:1555 9:1 11:172 12:1339 13:458 14:2556 15:366 16:286 17:383 18:893 20:556 21:4 22:188 23:7665 24:2674 25:2 27:2802 29:19 31:3337 32:35 33:1 34:83 35:256 36:3538 37:4561 38:9400 39:909 40:253 41:4136 42:1945 43:2719 44:367 45:18573 46:5079 47:337 49:1890 50:1940 51:591 52:1554 54:324 55:1068 56:11 57:269 58:2212 59:1299 60:1174 61:2829 62:2939 63:1790 64:5520 65:2165 66:4697 67:3088 68:1086 69:3867 70:1043 71:622 72:2846 74:2772 75:1503 76:607 77:2762 78:1897 79:1708 80:2198 81:2071 82:3167 83:1436 84:1881 85:3455 86:1083 87:2129 88:1310 89:4419 90:776 91:8410 92:2749 93:2939 94:4074 95:4412 96:1448 97:309 98:955 99:700 100:72 101:1435 102:3893 103:32846 104:5276 105:740 106:968 107:2632 108:1249 109:4160 110:2243 111:3287 112:2217 113:1847 114:1956 115:2210 116:2085 117:2575 118:2978 119:1939 120:2131 121:1322 122:2781 123:2230 124:1683 125:2903 126:91 128:1574 129:959 130:1282 131:2030 132:766 133:450 134:1575 135:350 136:1430 137:1129 138:2754 139:1581 140:1633 141:1522 142:1906 143:1985 144:1202 145:558 146:2170 147:2100 148:2691 149:2933 150:1245 151:2225 152:2074 153:526 154:7533 155:1833 156:3029 157:1941 158:1341 159:2503 160:3629 161:1853 162:3852 163:2229 164:1867 165:2085 166:1520 167:2018 168:3977 169:773 170:5128 171:1000 172:4411 173:3382 174:917 175:1322 176:3719 177:4726 178:3945 179:2305 180:2739 181:4088 182:3498 183:2258 184:2067 185:21528 186:5202 187:4628 188:4258 189:4327 190:9553 191:1479 192:11297 193:9455 194:7769 195:5575 196:3276 197:3146 198:6062 199:8583 200:8090 201:6367 202:10384 203:10609 204:4582 205:3607 206:4476 207:3489 208:4260 209:5112 210:4561 211:2590 212:4544 213:3796 214:1022 215:46 216:6756 217:3179 218:1362 219:394 220:2141 221:1185 222:710 223:2646 End of report