IPv4 R&E Routing Table Report 23:05 GMT Sat 01 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: 1008736 Prefixes after maximum aggregation (per Origin AS): 391019 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 499829 Number of IPv4 prefixes with a valid ROA: 583921 Number of IPv4 prefixes with an invalid ROA: 587 Number of IPv4 prefixes with no ROA: 424228 Total ASes present in the Internet Routing Table: 77378 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66324 Origin ASes announcing only one prefix: 27097 Transit ASes present in the Internet Routing Table: 11054 Transit-only ASes present in the Internet Routing Table: 552 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: 995 Number of instances of unregistered ASNs: 1024 Number of 32-bit ASNs allocated by the RIRs: 47869 Number of 32-bit ASNs visible in the Routing Table: 39181 Prefixes from 32-bit ASNs in the Routing Table: 215162 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: 412 Number of addresses announced to Internet: 3112995328 Equivalent to 185 /8s, 140 /16s and 138 /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: 330786 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270955 Total APNIC prefixes after maximum aggregation: 80381 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260890 Unique aggregates announced from the APNIC address blocks: 106103 APNIC Region origin ASes present in the Internet Routing Table: 14802 APNIC Prefixes per ASN: 17.63 APNIC Region origin ASes announcing only one prefix: 4500 APNIC Region transit ASes present in the Internet Routing Table: 1997 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: 751772416 Equivalent to 44 /8s, 207 /16s and 35 /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: 295672 Total ARIN prefixes after maximum aggregation: 133242 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296279 Unique aggregates announced from the ARIN address blocks: 144981 ARIN Region origin ASes present in the Internet Routing Table: 19343 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7118 ARIN Region transit ASes present in the Internet Routing Table: 1909 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: 1353211904 Equivalent to 80 /8s, 168 /16s and 96 /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: 280836 Total RIPE prefixes after maximum aggregation: 139434 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281044 Unique aggregates announced from the RIPE address blocks: 182132 RIPE Region origin ASes present in the Internet Routing Table: 29088 RIPE Prefixes per ASN: 9.66 RIPE Region origin ASes announcing only one prefix: 12101 RIPE Region transit ASes present in the Internet Routing Table: 4047 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: 12788 Number of RIPE addresses announced to Internet: 733713152 Equivalent to 43 /8s, 187 /16s and 147 /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: 125028 Total LACNIC prefixes after maximum aggregation: 30413 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121112 Unique aggregates announced from the LACNIC address blocks: 49467 LACNIC Region origin ASes present in the Internet Routing Table: 11302 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2665 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: 9285 Number of LACNIC addresses announced to Internet: 170620160 Equivalent to 10 /8s, 43 /16s and 117 /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: 35250 Total AfriNIC prefixes after maximum aggregation: 6869 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 48999 Unique aggregates announced from the AfriNIC address blocks: 16780 AfriNIC Region origin ASes present in the Internet Routing Table: 1963 AfriNIC Prefixes per ASN: 24.96 AfriNIC Region origin ASes announcing only one prefix: 713 AfriNIC Region transit ASes present in the Internet Routing Table: 373 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: 1329 Number of AfriNIC addresses announced to Internet: 103456512 Equivalent to 6 /8s, 42 /16s and 159 /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 4399 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 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 14430 41086 5379 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 7299 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 2525 177 1819 CDNEXT, GB 34984 2416 363 574 TELLCOM-AS, TR 203020 1709 205 1003 HOSTROYALE, IN 8452 1664 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 12496 3301 569 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2504 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 1018 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 566 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 14430 41086 5379 AMAZON-02, US 9808 13383 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12496 3301 569 UNINET, MX 12479 7299 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 4399 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 12496 11927 UNINET, MX 12479 7299 7150 UNI2-AS, ES 7545 6114 5524 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4399 4375 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 /11:94 /12:298 /13:579 /14:1196 /15:2122 /16:13760 /17:8139 /18:13423 /19:24571 /20:44246 /21:51843 /22:112575 /23:104398 /24:631421 /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 12496 UNINET, MX 12479 6260 7299 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 2437 14430 AMAZON-02, US 30036 2306 2648 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) ---------------------------------------------- 1:2433 2:1520 3:968 4:10 5:4895 6:172 7:6 8:1508 9:6 11:172 12:1240 13:549 14:2655 15:401 16:303 17:386 18:910 20:581 21:4 22:188 23:8010 24:2559 25:2 27:2793 29:19 31:3363 32:31 33:1 34:84 35:275 36:4511 37:4544 38:9349 39:1169 40:473 41:4263 42:1936 43:2821 44:396 45:19248 46:5183 47:368 49:2137 50:2048 51:595 52:1628 54:357 55:1087 56:11 57:289 58:2314 59:1316 60:1191 61:3016 62:3100 63:1757 64:5881 65:2130 66:5887 67:3233 68:1488 69:4122 70:1041 71:629 72:2989 74:2872 75:1507 76:601 77:2766 78:1905 79:1782 80:2255 81:2113 82:3571 83:1468 84:1989 85:3586 86:1108 87:2141 88:1326 89:4527 90:813 91:8405 92:2810 93:2992 94:4163 95:4544 96:1470 97:312 98:947 99:761 100:71 101:1477 102:4154 103:32695 104:5459 105:775 106:910 107:2791 108:1192 109:4206 110:2260 111:3853 112:2755 113:1891 114:2084 115:2246 116:2116 117:3072 118:3053 119:2030 120:2343 121:1491 122:2854 123:2245 124:1708 125:2920 126:124 128:1573 129:958 130:1436 131:2197 132:768 133:461 134:1623 135:365 136:1490 137:1137 138:2829 139:1584 140:1681 141:1576 142:2176 143:2119 144:1323 145:632 146:2179 147:2110 148:2776 149:2823 150:1290 151:2661 152:2266 153:585 154:7927 155:2208 156:3187 157:1999 158:1384 159:2627 160:3757 161:2003 162:3982 163:2313 164:1948 165:2557 166:1320 167:2122 168:3792 169:763 170:5409 171:1063 172:4489 173:3429 174:905 175:1348 176:3750 177:4722 178:4313 179:2299 180:2893 181:4305 182:3776 183:2589 184:2064 185:21656 186:5384 187:4704 188:4395 189:4461 190:9712 191:1570 192:11412 193:9488 194:7845 195:5577 196:3203 197:3334 198:6107 199:6088 200:8074 201:6381 202:10455 203:10604 204:4597 205:3632 206:4359 207:3709 208:4245 209:5368 210:4701 211:2667 212:4879 213:3959 214:1035 215:53 216:7140 217:3384 218:1578 219:400 220:2199 221:1265 222:763 223:3117 End of report