IPv4 R&E Routing Table Report 23:05 GMT Sun 02 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: 1009015 Prefixes after maximum aggregation (per Origin AS): 390890 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 499647 Number of IPv4 prefixes with a valid ROA: 584045 Number of IPv4 prefixes with an invalid ROA: 584 Number of IPv4 prefixes with no ROA: 424386 Total ASes present in the Internet Routing Table: 77368 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66308 Origin ASes announcing only one prefix: 27074 Transit ASes present in the Internet Routing Table: 11060 Transit-only ASes present in the Internet Routing Table: 551 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: 992 Number of instances of unregistered ASNs: 1021 Number of 32-bit ASNs allocated by the RIRs: 47879 Number of 32-bit ASNs visible in the Routing Table: 39173 Prefixes from 32-bit ASNs in the Routing Table: 215136 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: 416 Number of addresses announced to Internet: 3112877056 Equivalent to 185 /8s, 138 /16s and 188 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 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: 331007 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271069 Total APNIC prefixes after maximum aggregation: 80437 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260914 Unique aggregates announced from the APNIC address blocks: 106130 APNIC Region origin ASes present in the Internet Routing Table: 14808 APNIC Prefixes per ASN: 17.62 APNIC Region origin ASes announcing only one prefix: 4488 APNIC Region transit ASes present in the Internet Routing Table: 2004 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: 10390 Number of APNIC addresses announced to Internet: 751761408 Equivalent to 44 /8s, 206 /16s and 248 /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: 295619 Total ARIN prefixes after maximum aggregation: 133223 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296227 Unique aggregates announced from the ARIN address blocks: 144995 ARIN Region origin ASes present in the Internet Routing Table: 19352 ARIN Prefixes per ASN: 15.31 ARIN Region origin ASes announcing only one prefix: 7124 ARIN Region transit ASes present in the Internet Routing Table: 1913 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: 5399 Number of ARIN addresses announced to Internet: 1353237504 Equivalent to 80 /8s, 168 /16s and 196 /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: 280667 Total RIPE prefixes after maximum aggregation: 139342 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281063 Unique aggregates announced from the RIPE address blocks: 182132 RIPE Region origin ASes present in the Internet Routing Table: 29092 RIPE Prefixes per ASN: 9.66 RIPE Region origin ASes announcing only one prefix: 12103 RIPE Region transit ASes present in the Internet Routing Table: 4043 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: 12791 Number of RIPE addresses announced to Internet: 733714944 Equivalent to 43 /8s, 187 /16s and 154 /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: 125507 Total LACNIC prefixes after maximum aggregation: 30416 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121601 Unique aggregates announced from the LACNIC address blocks: 49473 LACNIC Region origin ASes present in the Internet Routing Table: 11311 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2662 LACNIC Region transit ASes present in the Internet Routing Table: 2548 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: 9292 Number of LACNIC addresses announced to Internet: 170707200 Equivalent to 10 /8s, 44 /16s and 201 /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: 35161 Total AfriNIC prefixes after maximum aggregation: 6798 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 48794 Unique aggregates announced from the AfriNIC address blocks: 16552 AfriNIC Region origin ASes present in the Internet Routing Table: 1928 AfriNIC Prefixes per ASN: 25.31 AfriNIC Region origin ASes announcing only one prefix: 697 AfriNIC Region transit ASes present in the Internet Routing Table: 367 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: 1301 Number of AfriNIC addresses announced to Internet: 103234304 Equivalent to 6 /8s, 39 /16s and 59 /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 13379 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6114 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4500 537 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4402 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3985 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3717 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3311 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2936 864 504 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 14435 41087 5380 AMAZON-02, US 11492 4776 317 802 CABLEONE, US 22773 4642 3110 403 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3688 1320 82 SHAW, CA 396982 3279 4826 470 GOOGLE-CLOUD-PLATFORM, US 749 3216 54766 2467 DNIC-AS-00749, US 16625 2860 1218 2142 AKAMAI-AS, US 36352 2855 231 915 AS-COLOCROSSING, US 30036 2648 363 323 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 7298 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4021 378 2290 M247, RO 20940 3890 3395 122 AKAMAI-ASN1, NL 12389 3150 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2524 177 1818 CDNEXT, GB 34984 2416 363 574 TELLCOM-AS, TR 8452 1645 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1594 186 925 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 12497 3301 570 UNINET, MX 10620 3455 463 1098 Telmex Colombia S.A., CO 13999 2506 511 350 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1375 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1278 371 23 Telefonica del Peru S.A.A., PE 11664 1265 278 33 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 1963 630 32 RAYA-AS, EG 36992 1678 1509 399 ETISALAT-MISR, EG 29571 1286 102 52 ORANGE-COTE-IVOIRE, CI 24863 1262 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 559 82 3 KENET-AS, KE 37342 536 32 1 MOVITEL, MZ 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 14435 41087 5380 AMAZON-02, US 9808 13379 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12497 3301 570 UNINET, MX 12479 7298 1711 149 UNI2-AS, ES 7545 6114 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4776 317 802 CABLEONE, US 22773 4642 3110 403 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4500 537 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4402 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 13379 13262 CHINAMOBILE-CN China Mobile Communications Grou 8151 12497 11927 UNINET, MX 12479 7298 7149 UNI2-AS, ES 7545 6114 5524 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4402 4378 FPT-AS-AP FPT Telecom Company, VN 22773 4642 4239 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4500 4187 BBIL-AP BHARTI Airtel Ltd., IN 11492 4776 3974 CABLEONE, US 7552 3985 3957 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 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 /11:94 /12:298 /13:579 /14:1196 /15:2122 /16:13763 /17:8141 /18:13429 /19:24569 /20:44237 /21:51857 /22:112489 /23:104459 /24:631711 /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 6693 12497 UNINET, MX 12479 6259 7298 UNI2-AS, ES 11492 3589 4776 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3476 3688 SHAW, CA 22773 2985 4642 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2438 14435 AMAZON-02, US 30036 2306 2648 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) ---------------------------------------------- 1:2434 2:1524 3:968 4:10 5:4898 6:172 7:6 8:1508 9:6 11:172 12:1241 13:549 14:2655 15:401 16:303 17:386 18:911 20:581 21:4 22:188 23:8016 24:2559 25:2 27:2793 29:19 31:3357 32:31 33:1 34:84 35:275 36:4510 37:4548 38:9356 39:1169 40:473 41:4249 42:1941 43:2824 44:398 45:19272 46:5180 47:368 49:2137 50:2048 51:595 52:1628 54:357 55:1094 56:11 57:289 58:2314 59:1316 60:1192 61:3006 62:3100 63:1753 64:5885 65:2129 66:5884 67:3234 68:1487 69:4123 70:1041 71:629 72:2989 74:2870 75:1508 76:601 77:2763 78:1906 79:1780 80:2267 81:2120 82:3574 83:1468 84:1995 85:3586 86:1109 87:2141 88:1326 89:4519 90:813 91:8407 92:2810 93:2990 94:4164 95:4542 96:1470 97:312 98:947 99:761 100:71 101:1478 102:4126 103:32712 104:5462 105:775 106:910 107:2791 108:1193 109:4209 110:2259 111:3852 112:2755 113:1893 114:2084 115:2247 116:2116 117:3073 118:3051 119:2030 120:2342 121:1491 122:2851 123:2245 124:1710 125:2920 126:124 128:1572 129:958 130:1436 131:2206 132:779 133:461 134:1623 135:365 136:1491 137:1138 138:2846 139:1588 140:1679 141:1577 142:2177 143:2116 144:1319 145:632 146:2179 147:2111 148:2776 149:2828 150:1290 151:2663 152:2266 153:585 154:7927 155:2209 156:3173 157:1998 158:1385 159:2627 160:3756 161:1984 162:3979 163:2314 164:1951 165:2549 166:1320 167:2123 168:3816 169:760 170:5431 171:1063 172:4482 173:3431 174:905 175:1348 176:3750 177:4777 178:4308 179:2302 180:2893 181:4308 182:3777 183:2587 184:2063 185:21659 186:5421 187:4741 188:4393 189:4480 190:9720 191:1617 192:11408 193:9489 194:7848 195:5575 196:3199 197:3336 198:6107 199:6094 200:8085 201:6382 202:10455 203:10613 204:4595 205:3621 206:4357 207:3711 208:4245 209:5364 210:4702 211:2666 212:4881 213:3961 214:1032 215:53 216:7143 217:3382 218:1574 219:400 220:2198 221:1265 222:763 223:3117 End of report