IPv4 R&E Routing Table Report 23:05 GMT Mon 27 Oct, 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: 1010036 Prefixes after maximum aggregation (per Origin AS): 392149 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498494 Number of IPv4 prefixes with a valid ROA: 581376 Number of IPv4 prefixes with an invalid ROA: 576 Number of IPv4 prefixes with no ROA: 428084 Total ASes present in the Internet Routing Table: 77377 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66311 Origin ASes announcing only one prefix: 27074 Transit ASes present in the Internet Routing Table: 11066 Transit-only ASes present in the Internet Routing Table: 544 Paths with bogon ASNs present in the IPv4 Routing Table: 26 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: 1018 Number of instances of unregistered ASNs: 1047 Number of 32-bit ASNs allocated by the RIRs: 47816 Number of 32-bit ASNs visible in the Routing Table: 39173 Prefixes from 32-bit ASNs in the Routing Table: 214361 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 414 Number of addresses announced to Internet: 3111674880 Equivalent to 185 /8s, 120 /16s and 100 /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: 329620 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270289 Total APNIC prefixes after maximum aggregation: 80237 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260076 Unique aggregates announced from the APNIC address blocks: 105641 APNIC Region origin ASes present in the Internet Routing Table: 14808 APNIC Prefixes per ASN: 17.56 APNIC Region origin ASes announcing only one prefix: 4485 APNIC Region transit ASes present in the Internet Routing Table: 1999 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10385 Number of APNIC addresses announced to Internet: 751700992 Equivalent to 44 /8s, 206 /16s and 12 /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: 297875 Total ARIN prefixes after maximum aggregation: 134785 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298786 Unique aggregates announced from the ARIN address blocks: 144681 ARIN Region origin ASes present in the Internet Routing Table: 19335 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7104 ARIN Region transit ASes present in the Internet Routing Table: 1910 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: 5382 Number of ARIN addresses announced to Internet: 1352221440 Equivalent to 80 /8s, 153 /16s and 67 /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: 280396 Total RIPE prefixes after maximum aggregation: 139122 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280176 Unique aggregates announced from the RIPE address blocks: 181416 RIPE Region origin ASes present in the Internet Routing Table: 29076 RIPE Prefixes per ASN: 9.64 RIPE Region origin ASes announcing only one prefix: 12092 RIPE Region transit ASes present in the Internet Routing Table: 4050 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 27 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12782 Number of RIPE addresses announced to Internet: 733094144 Equivalent to 43 /8s, 178 /16s and 33 /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: 124963 Total LACNIC prefixes after maximum aggregation: 30430 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121045 Unique aggregates announced from the LACNIC address blocks: 49501 LACNIC Region origin ASes present in the Internet Routing Table: 11313 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2675 LACNIC Region transit ASes present in the Internet Routing Table: 2550 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: 9286 Number of LACNIC addresses announced to Internet: 170723584 Equivalent to 10 /8s, 45 /16s and 9 /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: 35495 Total AfriNIC prefixes after maximum aggregation: 6889 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 49539 Unique aggregates announced from the AfriNIC address blocks: 16887 AfriNIC Region origin ASes present in the Internet Routing Table: 1973 AfriNIC Prefixes per ASN: 25.11 AfriNIC Region origin ASes announcing only one prefix: 718 AfriNIC Region transit ASes present in the Internet Routing Table: 377 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: 1338 Number of AfriNIC addresses announced to Internet: 103711488 Equivalent to 6 /8s, 46 /16s and 131 /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 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6127 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4486 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4419 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3985 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3307 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3237 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2935 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2467 271 1911 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 14369 41099 5365 AMAZON-02, US 11492 4772 316 803 CABLEONE, US 22773 4283 3087 374 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3686 1320 82 SHAW, CA 396982 3278 4826 469 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 4155 3131 243 1748 USDA-1, US 16625 2857 1214 2142 AKAMAI-AS, US 36352 2854 231 908 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 7334 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3998 377 2280 M247, RO 20940 3893 3395 122 AKAMAI-ASN1, NL 12389 3140 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2510 177 1819 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1721 206 1005 HOSTROYALE, IN 8452 1669 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 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 12460 3290 576 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2510 510 349 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1374 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1279 371 23 Telefonica del Peru S.A.A., PE 11664 1230 278 34 Techtel LMDS Comunicaciones Interactivas 22884 1056 67 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1026 2486 56 TIM SA, 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 1967 630 32 RAYA-AS, EG 36992 1679 1509 399 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1261 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1119 523 47 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 569 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 14369 41099 5365 AMAZON-02, US 9808 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12460 3290 576 UNINET, MX 12479 7334 1711 149 UNI2-AS, ES 7545 6127 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4772 316 803 CABLEONE, US 9498 4486 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4419 347 24 FPT-AS-AP FPT Telecom Company, VN 22773 4283 3087 374 ASN-CXA-ALL-CCI-22773-RDC, US 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 13307 13190 CHINAMOBILE-CN China Mobile Communications Grou 8151 12460 11884 UNINET, MX 12479 7334 7185 UNI2-AS, ES 7545 6127 5537 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4419 4395 FPT-AS-AP FPT Telecom Company, VN 9498 4486 4175 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3969 CABLEONE, US 7552 3985 3957 VIETEL-AS-AP Viettel Group, VN 22773 4283 3909 ASN-CXA-ALL-CCI-22773-RDC, US 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 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 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 397015 UNALLOCATED 8.44.246.0/24 3356 LEVEL3, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 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 23.140.216.0/24 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /11:93 /12:300 /13:579 /14:1196 /15:2122 /16:13748 /17:8176 /18:13424 /19:24577 /20:44251 /21:51867 /22:112630 /23:104269 /24:632733 /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 6669 12460 UNINET, MX 12479 6293 7334 UNI2-AS, ES 11492 3586 4772 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3686 SHAW, CA 7155 2819 3860 VIASAT-SP-BACKBONE, US 22773 2626 4283 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2421 14369 AMAZON-02, US 30036 2295 2637 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 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) ---------------------------------------------- 1:2436 2:1521 3:963 4:10 5:4871 6:171 7:6 8:1507 9:6 11:172 12:1238 13:536 14:2656 15:402 16:303 17:387 18:907 20:580 21:4 22:189 23:8030 24:2561 25:2 27:2794 29:19 31:3348 32:31 33:1 34:84 35:275 36:4503 37:4548 38:9514 39:1097 40:466 41:4303 42:1936 43:2817 44:395 45:19250 46:5173 47:370 49:2131 50:2049 51:595 52:1631 54:356 55:1100 56:11 57:285 58:2319 59:1314 60:1189 61:2961 62:3086 63:1760 64:5842 65:2132 66:5600 67:3139 68:1474 69:4107 70:1042 71:628 72:2982 74:2846 75:1507 76:601 77:2764 78:1898 79:1752 80:2240 81:2115 82:3443 83:1465 84:1985 85:3575 86:1100 87:2130 88:1329 89:4521 90:815 91:8385 92:2803 93:2983 94:4154 95:4479 96:1466 97:312 98:948 99:751 100:71 101:1131 102:4201 103:32783 104:5442 105:762 106:896 107:2775 108:1201 109:4210 110:2258 111:3825 112:2722 113:1869 114:2084 115:2246 116:2111 117:3045 118:3058 119:2025 120:2317 121:1493 122:2807 123:2253 124:1707 125:2913 126:124 128:1561 129:960 130:1409 131:2194 132:785 133:461 134:1617 135:365 136:1488 137:1133 138:2817 139:1583 140:1627 141:1559 142:2207 143:2083 144:1304 145:627 146:2180 147:2122 148:2760 149:2889 150:1298 151:2633 152:2216 153:583 154:8138 155:2204 156:3199 157:2005 158:1429 159:2600 160:3633 161:2004 162:3964 163:2303 164:1949 165:2559 166:1513 167:2101 168:3783 169:774 170:5407 171:1058 172:4476 173:3424 174:903 175:1349 176:3754 177:4685 178:4308 179:2286 180:2885 181:4298 182:3758 183:2559 184:2053 185:21653 186:5382 187:4682 188:4394 189:4417 190:9717 191:1564 192:11381 193:9482 194:7823 195:5576 196:3255 197:3343 198:6092 199:8842 200:8088 201:6380 202:10434 203:10597 204:4604 205:3630 206:4360 207:3715 208:4242 209:5367 210:4693 211:2675 212:4876 213:3917 214:1038 215:53 216:7139 217:3390 218:1576 219:400 220:2200 221:1257 222:754 223:3112 End of report