IPv4 R&E Routing Table Report 23:05 GMT Fri 31 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: 1011900 Prefixes after maximum aggregation (per Origin AS): 392680 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 499843 Number of IPv4 prefixes with a valid ROA: 584129 Number of IPv4 prefixes with an invalid ROA: 586 Number of IPv4 prefixes with no ROA: 427185 Total ASes present in the Internet Routing Table: 77373 Prefixes per ASN: 13.08 Origin-only ASes present in the Internet Routing Table: 66321 Origin ASes announcing only one prefix: 27086 Transit ASes present in the Internet Routing Table: 11052 Transit-only ASes present in the Internet Routing Table: 550 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: 991 Number of instances of unregistered ASNs: 1020 Number of 32-bit ASNs allocated by the RIRs: 47855 Number of 32-bit ASNs visible in the Routing Table: 39178 Prefixes from 32-bit ASNs in the Routing Table: 215113 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: 430 Number of addresses announced to Internet: 3112694528 Equivalent to 185 /8s, 135 /16s and 243 /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: 330758 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271053 Total APNIC prefixes after maximum aggregation: 80401 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260951 Unique aggregates announced from the APNIC address blocks: 106156 APNIC Region origin ASes present in the Internet Routing Table: 14815 APNIC Prefixes per ASN: 17.61 APNIC Region origin ASes announcing only one prefix: 4493 APNIC Region transit ASes present in the Internet Routing Table: 2006 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: 10397 Number of APNIC addresses announced to Internet: 751725824 Equivalent to 44 /8s, 206 /16s and 109 /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: 298852 Total ARIN prefixes after maximum aggregation: 134996 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 299401 Unique aggregates announced from the ARIN address blocks: 144987 ARIN Region origin ASes present in the Internet Routing Table: 19344 ARIN Prefixes per ASN: 15.48 ARIN Region origin ASes announcing only one prefix: 7119 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: 5394 Number of ARIN addresses announced to Internet: 1353002496 Equivalent to 80 /8s, 165 /16s and 46 /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: 280763 Total RIPE prefixes after maximum aggregation: 139406 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281049 Unique aggregates announced from the RIPE address blocks: 182139 RIPE Region origin ASes present in the Internet Routing Table: 29090 RIPE Prefixes per ASN: 9.66 RIPE Region origin ASes announcing only one prefix: 12098 RIPE Region transit ASes present in the Internet Routing Table: 4042 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: 12789 Number of RIPE addresses announced to Internet: 733707264 Equivalent to 43 /8s, 187 /16s and 124 /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: 125111 Total LACNIC prefixes after maximum aggregation: 30391 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121205 Unique aggregates announced from the LACNIC address blocks: 49466 LACNIC Region origin ASes present in the Internet Routing Table: 11310 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2672 LACNIC Region transit ASes present in the Internet Routing Table: 2542 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: 9289 Number of LACNIC addresses announced to Internet: 170710528 Equivalent to 10 /8s, 44 /16s and 214 /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: 35130 Total AfriNIC prefixes after maximum aggregation: 6811 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 48864 Unique aggregates announced from the AfriNIC address blocks: 16719 AfriNIC Region origin ASes present in the Internet Routing Table: 1937 AfriNIC Prefixes per ASN: 25.23 AfriNIC Region origin ASes announcing only one prefix: 704 AfriNIC Region transit ASes present in the Internet Routing Table: 366 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: 1309 Number of AfriNIC addresses announced to Internet: 103290368 Equivalent to 6 /8s, 40 /16s and 22 /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 13383 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6114 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4499 537 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 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 3310 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 2482 272 1916 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 14419 41085 5373 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 4155 3141 243 1759 USDA-1, US 16625 2860 1218 2142 AKAMAI-AS, US 36352 2855 231 915 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 7298 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4017 378 2289 M247, RO 20940 3892 3395 122 AKAMAI-ASN1, NL 12389 3149 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2525 177 1819 CDNEXT, GB 34984 2416 363 574 TELLCOM-AS, TR 203020 1709 205 1003 HOSTROYALE, IN 8452 1665 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 12494 3301 570 UNINET, MX 10620 3456 463 1099 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 1378 2435 257 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1283 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1277 371 22 Telefonica del Peru S.A.A., PE 22884 1058 67 362 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 1284 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 14419 41085 5373 AMAZON-02, US 9808 13383 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12494 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 4499 537 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 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 13383 13266 CHINAMOBILE-CN China Mobile Communications Grou 8151 12494 11924 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 4416 4392 FPT-AS-AP FPT Telecom Company, VN 22773 4642 4239 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4499 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 /11:93 /12:300 /13:579 /14:1196 /15:2122 /16:13756 /17:8138 /18:13423 /19:24572 /20:44254 /21:51861 /22:112570 /23:104488 /24:634477 /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 6691 12494 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 2436 14419 AMAZON-02, US 30036 2305 2647 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) ---------------------------------------------- 1:2434 2:1519 3:967 4:10 5:4896 6:172 7:6 8:1508 9:6 11:172 12:1241 13:549 14:2655 15:400 16:303 17:386 18:909 20:581 21:4 22:188 23:8015 24:2558 25:2 27:2793 29:19 31:3360 32:31 33:1 34:84 35:275 36:4509 37:4541 38:9346 39:1169 40:473 41:4267 42:1943 43:2826 44:395 45:19262 46:5185 47:368 49:2140 50:2050 51:595 52:1628 54:357 55:1104 56:11 57:289 58:2314 59:1316 60:1191 61:3017 62:3099 63:1758 64:5870 65:2130 66:5887 67:3236 68:1488 69:4123 70:1041 71:629 72:2991 74:2875 75:1504 76:601 77:2766 78:1905 79:1784 80:2256 81:2113 82:3571 83:1468 84:1989 85:3588 86:1107 87:2139 88:1326 89:4535 90:813 91:8399 92:2808 93:2989 94:4163 95:4536 96:1470 97:312 98:947 99:761 100:71 101:1476 102:4149 103:32763 104:5460 105:773 106:906 107:2791 108:1194 109:4204 110:2259 111:3853 112:2756 113:1893 114:2084 115:2248 116:2116 117:3073 118:3058 119:2030 120:2343 121:1490 122:2852 123:2244 124:1709 125:2920 126:124 128:1578 129:958 130:1438 131:2205 132:776 133:461 134:1623 135:365 136:1489 137:1133 138:2827 139:1583 140:1679 141:1568 142:2175 143:2120 144:1324 145:632 146:2179 147:2129 148:2773 149:2823 150:1296 151:2663 152:2265 153:585 154:7898 155:2210 156:3187 157:2001 158:1384 159:2625 160:3750 161:2002 162:3979 163:2317 164:1949 165:2554 166:1516 167:2124 168:3794 169:759 170:5427 171:1063 172:4492 173:3429 174:905 175:1348 176:3750 177:4727 178:4310 179:2299 180:2894 181:4309 182:3776 183:2591 184:2059 185:21665 186:5390 187:4708 188:4395 189:4458 190:9697 191:1570 192:11400 193:9495 194:7848 195:5577 196:3190 197:3329 198:6105 199:8847 200:8080 201:6382 202:10450 203:10614 204:4593 205:3637 206:4357 207:3711 208:4244 209:5357 210:4697 211:2667 212:4880 213:3960 214:1036 215:53 216:7143 217:3389 218:1578 219:400 220:2199 221:1265 222:763 223:3117 End of report