IPv4 R&E Routing Table Report 23:05 GMT Mon 17 Nov, 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: 1011012 Prefixes after maximum aggregation (per Origin AS): 391895 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 501452 Number of IPv4 prefixes with a valid ROA: 587249 Number of IPv4 prefixes with an invalid ROA: 763 Number of IPv4 prefixes with no ROA: 423000 Total ASes present in the Internet Routing Table: 77460 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66383 Origin ASes announcing only one prefix: 27076 Transit ASes present in the Internet Routing Table: 11077 Transit-only ASes present in the Internet Routing Table: 556 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 965 Number of instances of unregistered ASNs: 994 Number of 32-bit ASNs allocated by the RIRs: 48012 Number of 32-bit ASNs visible in the Routing Table: 39294 Prefixes from 32-bit ASNs in the Routing Table: 216082 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: 404 Number of addresses announced to Internet: 3102852864 Equivalent to 184 /8s, 241 /16s and 199 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 331427 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271504 Total APNIC prefixes after maximum aggregation: 80197 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 261073 Unique aggregates announced from the APNIC address blocks: 106049 APNIC Region origin ASes present in the Internet Routing Table: 14851 APNIC Prefixes per ASN: 17.58 APNIC Region origin ASes announcing only one prefix: 4492 APNIC Region transit ASes present in the Internet Routing Table: 2011 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10430 Number of APNIC addresses announced to Internet: 748456960 Equivalent to 44 /8s, 156 /16s and 140 /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: 296623 Total ARIN prefixes after maximum aggregation: 133662 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296626 Unique aggregates announced from the ARIN address blocks: 145309 ARIN Region origin ASes present in the Internet Routing Table: 19346 ARIN Prefixes per ASN: 15.33 ARIN Region origin ASes announcing only one prefix: 7107 ARIN Region transit ASes present in the Internet Routing Table: 1914 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5404 Number of ARIN addresses announced to Internet: 1344858112 Equivalent to 80 /8s, 40 /16s and 232 /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: 281417 Total RIPE prefixes after maximum aggregation: 139776 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281764 Unique aggregates announced from the RIPE address blocks: 182775 RIPE Region origin ASes present in the Internet Routing Table: 29094 RIPE Prefixes per ASN: 9.68 RIPE Region origin ASes announcing only one prefix: 12093 RIPE Region transit ASes present in the Internet Routing Table: 4041 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: 12813 Number of RIPE addresses announced to Internet: 735525632 Equivalent to 43 /8s, 215 /16s and 59 /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: 124960 Total LACNIC prefixes after maximum aggregation: 30738 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121022 Unique aggregates announced from the LACNIC address blocks: 49563 LACNIC Region origin ASes present in the Internet Routing Table: 11308 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2663 LACNIC Region transit ASes present in the Internet Routing Table: 2546 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9299 Number of LACNIC addresses announced to Internet: 170782720 Equivalent to 10 /8s, 45 /16s and 240 /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: 35543 Total AfriNIC prefixes after maximum aggregation: 6857 AfriNIC Deaggregation factor: 5.18 Prefixes being announced from the AfriNIC address blocks: 50123 Unique aggregates announced from the AfriNIC address blocks: 17398 AfriNIC Region origin ASes present in the Internet Routing Table: 1985 AfriNIC Prefixes per ASN: 25.25 AfriNIC Region origin ASes announcing only one prefix: 721 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1348 Number of AfriNIC addresses announced to Internet: 103074816 Equivalent to 6 /8s, 36 /16s and 204 /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 13391 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6080 833 586 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4534 539 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4365 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3971 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3694 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3316 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2941 865 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2485 272 1919 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14246 37281 5388 AMAZON-02, US 11492 4787 317 804 CABLEONE, US 22773 4655 3108 379 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3295 4859 476 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2865 1224 2146 AKAMAI-AS, US 36352 2850 231 912 AS-COLOCROSSING, US 30036 2664 367 285 MEDIACOM-ENTERPRISE-BUSINESS, 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 7294 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4027 382 2291 M247, RO 20940 3856 3394 124 AKAMAI-ASN1, NL 12389 3143 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2483 175 1790 CDNEXT, GB 34984 2418 363 576 TELLCOM-AS, TR 8452 1694 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1486 169 856 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 12548 3317 577 UNINET, MX 10620 3455 463 1098 Telmex Colombia S.A., CO 13999 2505 511 345 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1017 2486 56 TIM SA, BR 18881 914 1127 31 TELEFONICA BRASIL S.A, 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 1985 630 32 RAYA-AS, EG 36992 1680 1509 397 ETISALAT-MISR, EG 24863 1266 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1086 520 31 Vodafone-, EG 37069 1086 1112 11 MOBINIL, EG 29571 1071 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 563 82 3 KENET-AS, KE 15399 552 57 56 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 14246 37281 5388 AMAZON-02, US 9808 13391 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12548 3317 577 UNINET, MX 12479 7294 1711 149 UNI2-AS, ES 7545 6080 833 586 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4787 317 804 CABLEONE, US 22773 4655 3108 379 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4534 539 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4365 347 24 FPT-AS-AP FPT Telecom Company, 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 13391 13274 CHINAMOBILE-CN China Mobile Communications Grou 8151 12548 11971 UNINET, MX 12479 7294 7145 UNI2-AS, ES 7545 6080 5494 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4365 4341 FPT-AS-AP FPT Telecom Company, VN 22773 4655 4276 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4534 4216 BBIL-AP BHARTI Airtel Ltd., IN 11492 4787 3983 CABLEONE, US 7552 3971 3943 VIETEL-AS-AP Viettel Group, VN 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 3737 AS-PTD, 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 23.159.56.0/24 Origin: 174 COGENT-174, US 23.159.56.0/24 Transit: 6453 AS6453, 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 /8:18 /9:14 /10:41 /11:94 /12:298 /13:578 /14:1193 /15:2090 /16:13643 /17:8148 /18:13408 /19:24610 /20:44377 /21:51877 /22:112690 /23:104718 /24:633215 /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 6751 12548 UNINET, MX 12479 6236 7294 UNI2-AS, ES 11492 3600 4787 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 2997 4655 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2420 14246 AMAZON-02, US 30036 2320 2664 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2210 3455 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) ---------------------------------------------- 1:2447 2:1533 3:960 4:10 5:4980 6:188 7:6 8:1514 9:6 11:172 12:1234 13:558 14:2602 15:412 16:303 17:385 18:905 20:583 21:4 22:188 23:8038 24:2559 25:2 27:2783 29:19 31:3364 32:31 33:1 34:84 35:275 36:4549 37:4565 38:9315 39:1174 40:461 41:4433 42:1926 43:2861 44:400 45:19281 46:5122 47:374 49:2157 50:2053 51:596 52:1623 54:352 55:1112 56:11 57:287 58:2315 59:1324 60:1185 61:3031 62:3087 63:1734 64:5906 65:2114 66:5879 67:3213 68:1493 69:4120 70:1038 71:624 72:3010 74:2894 75:1516 76:601 77:2762 78:1909 79:1784 80:2281 81:2106 82:3737 83:1465 84:2016 85:3579 86:1105 87:2133 88:1335 89:4592 90:838 91:8392 92:2832 93:2986 94:4175 95:4535 96:1461 97:311 98:952 99:746 100:68 101:1345 102:4252 103:32838 104:5470 105:772 106:913 107:2799 108:1192 109:4224 110:2251 111:3865 112:2749 113:1893 114:2083 115:2242 116:2127 117:3100 118:3055 119:2043 120:2343 121:1502 122:2856 123:2265 124:1643 125:2926 126:125 128:1571 129:958 130:1500 131:2243 132:783 133:462 134:1627 135:363 136:1495 137:1137 138:2860 139:1596 140:1699 141:1559 142:2245 143:2123 144:1311 145:634 146:2180 147:2120 148:2783 149:2847 150:1297 151:2650 152:2265 153:600 154:8166 155:2239 156:3668 157:2207 158:1404 159:2657 160:3672 161:2004 162:3986 163:2324 164:1956 165:2566 166:1320 167:2118 168:3829 169:783 170:5412 171:1104 172:4468 173:3423 174:909 175:1354 176:3757 177:4691 178:4293 179:2264 180:2901 181:4331 182:3807 183:2549 184:2062 185:21657 186:5432 187:4716 188:4394 189:4423 190:9676 191:1506 192:11409 193:9507 194:7834 195:5596 196:3243 197:3344 198:6062 199:6099 200:8060 201:6366 202:10385 203:10543 204:4601 205:3654 206:4343 207:3732 208:4237 209:5316 210:4710 211:2647 212:4872 213:3990 214:1041 215:52 216:7122 217:3337 218:1573 219:401 220:2197 221:1267 222:762 223:3122 End of report