IPv4 R&E Routing Table Report 23:05 GMT Sat 03 Jan, 2026 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: 1021801 Prefixes after maximum aggregation (per Origin AS): 393883 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506018 Number of IPv4 prefixes with a valid ROA: 609217 Number of IPv4 prefixes with an invalid ROA: 625 Number of IPv4 prefixes with no ROA: 411959 Total ASes present in the Internet Routing Table: 77612 Prefixes per ASN: 13.17 Origin-only ASes present in the Internet Routing Table: 66510 Origin ASes announcing only one prefix: 27097 Transit ASes present in the Internet Routing Table: 11102 Transit-only ASes present in the Internet Routing Table: 564 Paths with bogon ASNs present in the IPv4 Routing Table: 40 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 966 Number of instances of unregistered ASNs: 995 Number of 32-bit ASNs allocated by the RIRs: 48311 Number of 32-bit ASNs visible in the Routing Table: 39510 Prefixes from 32-bit ASNs in the Routing Table: 220156 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: 525 Number of addresses announced to Internet: 3104250368 Equivalent to 185 /8s, 7 /16s and 26 /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: 334033 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277517 Total APNIC prefixes after maximum aggregation: 80871 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 264166 Unique aggregates announced from the APNIC address blocks: 106418 APNIC Region origin ASes present in the Internet Routing Table: 14907 APNIC Prefixes per ASN: 17.72 APNIC Region origin ASes announcing only one prefix: 4507 APNIC Region transit ASes present in the Internet Routing Table: 2003 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: 10493 Number of APNIC addresses announced to Internet: 753013504 Equivalent to 44 /8s, 226 /16s and 19 /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: 298829 Total ARIN prefixes after maximum aggregation: 134657 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299032 Unique aggregates announced from the ARIN address blocks: 145686 ARIN Region origin ASes present in the Internet Routing Table: 19359 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7073 ARIN Region transit ASes present in the Internet Routing Table: 1924 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: 5420 Number of ARIN addresses announced to Internet: 1342461440 Equivalent to 80 /8s, 4 /16s and 86 /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: 282620 Total RIPE prefixes after maximum aggregation: 139937 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283748 Unique aggregates announced from the RIPE address blocks: 184194 RIPE Region origin ASes present in the Internet Routing Table: 29130 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12095 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: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12894 Number of RIPE addresses announced to Internet: 735131392 Equivalent to 43 /8s, 209 /16s and 55 /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: 125595 Total LACNIC prefixes after maximum aggregation: 30845 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121404 Unique aggregates announced from the LACNIC address blocks: 49771 LACNIC Region origin ASes present in the Internet Routing Table: 11332 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2687 LACNIC Region transit ASes present in the Internet Routing Table: 2551 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9335 Number of LACNIC addresses announced to Internet: 170178048 Equivalent to 10 /8s, 36 /16s and 182 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 36274 Total AfriNIC prefixes after maximum aggregation: 6922 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52926 Unique aggregates announced from the AfriNIC address blocks: 19499 AfriNIC Region origin ASes present in the Internet Routing Table: 2004 AfriNIC Prefixes per ASN: 26.41 AfriNIC Region origin ASes announcing only one prefix: 735 AfriNIC Region transit ASes present in the Internet Routing Table: 382 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1368 Number of AfriNIC addresses announced to Internet: 103164160 Equivalent to 6 /8s, 38 /16s and 41 /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 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6035 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4656 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4339 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3730 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3400 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3327 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3116 196 614 LCS-AS-AP LARUS Limited, HK 24560 2958 865 497 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 14054 38463 5420 AMAZON-02, US 22773 4748 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3689 1320 82 SHAW, CA 396982 3319 4867 493 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 174 3041 8770 863 COGENT-174, US 16625 2852 1221 2134 AKAMAI-AS, US 36352 2705 222 888 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 7278 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3945 368 2269 M247, RO 20940 3828 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2568 182 1867 CDNEXT, GB 34984 2421 371 574 TELLCOM-AS, TR 8452 1709 1852 14 TE-AS TE-AS, EG 203020 1615 242 783 HOSTROYALE, IN 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 12651 3293 593 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2488 506 351 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1370 2430 270 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1260 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR 18881 905 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 1982 638 33 RAYA-AS, EG 36992 1847 1534 341 ETISALAT-MISR, EG 24863 1267 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1109 523 46 Vodafone-, EG 37069 1100 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 551 82 3 KENET-AS, KE 328608 550 47 168 Africa-on-Cloud-AS, ZA 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 14054 38463 5420 AMAZON-02, US 9808 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12651 3293 593 UNINET, MX 12479 7278 1711 149 UNI2-AS, ES 7545 6035 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4748 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 9498 4656 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4339 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 13382 13262 CHINAMOBILE-CN China Mobile Communications Grou 8151 12651 12058 UNINET, MX 12479 7278 7129 UNI2-AS, ES 7545 6035 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4748 4374 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4656 4320 BBIL-AP BHARTI Airtel Ltd., IN 18403 4339 4315 FPT-AS-AP FPT Telecom Company, VN 7552 4056 4027 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE, 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 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 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 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US 21861 UNALLOCATED 12.37.59.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, 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 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 /12:299 /13:577 /14:1197 /15:2090 /16:13643 /17:8170 /18:13440 /19:24701 /20:44694 /21:51931 /22:112876 /23:105600 /24:642419 /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 6853 12651 UNINET, MX 12479 6209 7278 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3536 4691 CABLEONE, US 6327 3477 3689 SHAW, CA 22773 3053 4748 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2479 14054 AMAZON-02, US 30036 2306 2649 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 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) ---------------------------------------------- 1:2465 2:1519 3:980 4:10 5:5007 6:187 7:6 8:1508 9:15 11:172 12:1234 13:617 14:2629 15:418 16:275 17:385 18:913 20:591 21:4 22:188 23:8086 24:2628 25:2 27:2800 29:19 31:3391 32:31 33:1 34:84 35:286 36:4639 37:4518 38:9901 39:1223 40:438 41:4508 42:1907 43:2954 44:410 45:19678 46:4988 47:396 49:2164 50:2051 51:598 52:1253 54:229 55:1122 56:11 57:306 58:2315 59:1352 60:1171 61:3089 62:3107 63:1764 64:6105 65:2139 66:5998 67:3260 68:1505 69:4206 70:1031 71:616 72:3083 74:2952 75:1517 76:600 77:2758 78:1929 79:1786 80:2301 81:2091 82:3937 83:1469 84:2026 85:3672 86:1101 87:2196 88:1358 89:4633 90:833 91:8428 92:2825 93:3019 94:4269 95:4556 96:1444 97:311 98:957 99:791 100:68 101:1316 102:4321 103:32861 104:5465 105:770 106:921 107:2815 108:1210 109:4256 110:2309 111:4003 112:2879 113:1969 114:2094 115:2266 116:2174 117:3245 118:2979 119:2108 120:2424 121:1505 122:2951 123:2283 124:1653 125:2966 126:125 128:1569 129:943 130:1540 131:2268 132:752 133:462 134:1625 135:539 136:1508 137:1209 138:2984 139:1600 140:1776 141:1561 142:2440 143:2123 144:1400 145:627 146:2185 147:2140 148:2781 149:2923 150:1331 151:2589 152:2248 153:844 154:9503 155:2304 156:4537 157:2246 158:1480 159:2729 160:3651 161:1993 162:3997 163:2332 164:1962 165:2651 166:1305 167:2196 168:3895 169:806 170:5456 171:1117 172:4516 173:3421 174:900 175:1354 176:3783 177:4733 178:4309 179:2294 180:2972 181:4355 182:3870 183:2676 184:2039 185:21699 186:5504 187:4782 188:4615 189:4465 190:9658 191:1527 192:11404 193:9503 194:7862 195:5642 196:3251 197:3273 198:6060 199:6108 200:8018 201:6382 202:10609 203:10578 204:4666 205:3697 206:4371 207:3833 208:4349 209:5438 210:4724 211:2681 212:4936 213:4029 214:1061 215:54 216:7123 217:3452 218:1614 219:412 220:2189 221:1298 222:775 223:3247 End of report