IPv4 R&E Routing Table Report 23:05 GMT Fri 02 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: 1021623 Prefixes after maximum aggregation (per Origin AS): 393870 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505964 Number of IPv4 prefixes with a valid ROA: 608924 Number of IPv4 prefixes with an invalid ROA: 624 Number of IPv4 prefixes with no ROA: 412075 Total ASes present in the Internet Routing Table: 77619 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66505 Origin ASes announcing only one prefix: 27093 Transit ASes present in the Internet Routing Table: 11114 Transit-only ASes present in the Internet Routing Table: 568 Paths with bogon ASNs present in the IPv4 Routing Table: 40 Average AS path length visible in the Internet Routing Table: 4.7 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: 48308 Number of 32-bit ASNs visible in the Routing Table: 39515 Prefixes from 32-bit ASNs in the Routing Table: 220143 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: 583 Number of addresses announced to Internet: 3104494592 Equivalent to 185 /8s, 10 /16s and 212 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 334103 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277319 Total APNIC prefixes after maximum aggregation: 80910 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 263972 Unique aggregates announced from the APNIC address blocks: 106403 APNIC Region origin ASes present in the Internet Routing Table: 14915 APNIC Prefixes per ASN: 17.70 APNIC Region origin ASes announcing only one prefix: 4508 APNIC Region transit ASes present in the Internet Routing Table: 2014 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: 10501 Number of APNIC addresses announced to Internet: 752995328 Equivalent to 44 /8s, 225 /16s and 204 /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: 298861 Total ARIN prefixes after maximum aggregation: 134642 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299074 Unique aggregates announced from the ARIN address blocks: 145653 ARIN Region origin ASes present in the Internet Routing Table: 19360 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7072 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: 1342460416 Equivalent to 80 /8s, 4 /16s and 82 /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: 282546 Total RIPE prefixes after maximum aggregation: 139905 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283646 Unique aggregates announced from the RIPE address blocks: 184174 RIPE Region origin ASes present in the Internet Routing Table: 29125 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 4052 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: 12892 Number of RIPE addresses announced to Internet: 735111680 Equivalent to 43 /8s, 208 /16s and 234 /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: 125682 Total LACNIC prefixes after maximum aggregation: 30844 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121476 Unique aggregates announced from the LACNIC address blocks: 49785 LACNIC Region origin ASes present in the Internet Routing Table: 11334 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2688 LACNIC Region transit ASes present in the Internet Routing Table: 2548 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: 170482432 Equivalent to 10 /8s, 41 /16s and 91 /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: 36249 Total AfriNIC prefixes after maximum aggregation: 6918 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52872 Unique aggregates announced from the AfriNIC address blocks: 19491 AfriNIC Region origin ASes present in the Internet Routing Table: 2001 AfriNIC Prefixes per ASN: 26.42 AfriNIC Region origin ASes announcing only one prefix: 734 AfriNIC Region transit ASes present in the Internet Routing Table: 381 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: 1367 Number of AfriNIC addresses announced to Internet: 103140608 Equivalent to 6 /8s, 37 /16s and 205 /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 4654 542 335 BBIL-AP BHARTI Airtel Ltd., IN 18403 4344 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 3115 195 613 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 14049 38462 5421 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 2855 1221 2136 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 2567 182 1866 CDNEXT, GB 34984 2421 371 574 TELLCOM-AS, TR 8452 1703 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 12650 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 1013 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 1266 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 554 82 3 KENET-AS, KE 15399 548 56 55 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 14049 38462 5421 AMAZON-02, US 9808 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12650 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 4654 542 335 BBIL-AP BHARTI Airtel Ltd., IN 18403 4344 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 12650 12057 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 18403 4344 4320 FPT-AS-AP FPT Telecom Company, VN 9498 4654 4319 BBIL-AP BHARTI Airtel Ltd., IN 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 /16:13647 /17:8169 /18:13440 /19:24699 /20:44673 /21:51912 /22:112852 /23:105618 /24:642286 /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 6852 12650 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 14049 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 2:1521 3:980 4:10 5:4995 6:187 7:6 8:1508 9:14 11:172 12:1234 13:614 14:2629 15:418 16:275 17:385 18:913 20:591 21:4 22:188 23:8053 24:2713 25:2 27:2799 29:19 31:3390 32:31 33:1 34:84 35:286 36:4639 37:4517 38:9905 39:1223 40:434 41:4485 42:1911 43:2953 44:411 45:19679 46:5029 47:396 49:2163 50:2052 51:598 52:1253 54:229 55:1127 56:11 57:306 58:2311 59:1353 60:1171 61:3089 62:3092 63:1764 64:6107 65:2139 66:5996 67:3259 68:1504 69:4204 70:1028 71:616 72:3082 74:2949 75:1517 76:599 77:2758 78:1929 79:1780 80:2300 81:2088 82:3935 83:1468 84:2025 85:3666 86:1101 87:2195 88:1358 89:4633 90:834 91:8429 92:2826 93:3019 94:4268 95:4556 96:1444 97:311 98:957 99:791 100:68 101:1332 102:4330 103:32868 104:5462 105:770 106:921 107:2815 108:1210 109:4257 110:2303 111:4004 112:2878 113:1968 114:2090 115:2266 116:2174 117:3246 118:2952 119:2104 120:2424 121:1500 122:2938 123:2262 124:1654 125:2962 126:125 128:1569 129:943 130:1540 131:2264 132:756 133:462 134:1624 135:539 136:1494 137:1207 138:2980 139:1598 140:1775 141:1562 142:2430 143:2128 144:1398 145:627 146:2186 147:2141 148:2780 149:2921 150:1329 151:2588 152:2248 153:844 154:9506 155:2303 156:4524 157:2248 158:1481 159:2729 160:3653 161:1993 162:4000 163:2326 164:1963 165:2653 166:1306 167:2196 168:3905 169:807 170:5449 171:1117 172:4516 173:3422 174:900 175:1354 176:3783 177:4759 178:4309 179:2295 180:2968 181:4354 182:3863 183:2676 184:2039 185:21696 186:5501 187:4777 188:4615 189:4478 190:9662 191:1554 192:11406 193:9505 194:7853 195:5628 196:3253 197:3275 198:6062 199:6100 200:8026 201:6382 202:10543 203:10561 204:4669 205:3700 206:4372 207:3824 208:4351 209:5440 210:4723 211:2681 212:4927 213:4029 214:1063 215:54 216:7115 217:3454 218:1614 219:406 220:2191 221:1298 222:775 223:3251 End of report