IPv4 R&E Routing Table Report 23:05 GMT Wed 24 Dec, 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: 1021300 Prefixes after maximum aggregation (per Origin AS): 393857 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505800 Number of IPv4 prefixes with a valid ROA: 608011 Number of IPv4 prefixes with an invalid ROA: 624 Number of IPv4 prefixes with no ROA: 412665 Total ASes present in the Internet Routing Table: 77617 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66516 Origin ASes announcing only one prefix: 27094 Transit ASes present in the Internet Routing Table: 11101 Transit-only ASes present in the Internet Routing Table: 568 Paths with bogon ASNs present in the IPv4 Routing Table: 42 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: 972 Number of instances of unregistered ASNs: 1001 Number of 32-bit ASNs allocated by the RIRs: 48281 Number of 32-bit ASNs visible in the Routing Table: 39509 Prefixes from 32-bit ASNs in the Routing Table: 219928 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: 646 Number of addresses announced to Internet: 3105481216 Equivalent to 185 /8s, 25 /16s and 226 /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: 333457 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277183 Total APNIC prefixes after maximum aggregation: 80780 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 263623 Unique aggregates announced from the APNIC address blocks: 106391 APNIC Region origin ASes present in the Internet Routing Table: 14917 APNIC Prefixes per ASN: 17.67 APNIC Region origin ASes announcing only one prefix: 4519 APNIC Region transit ASes present in the Internet Routing Table: 2008 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: 10502 Number of APNIC addresses announced to Internet: 753135872 Equivalent to 44 /8s, 227 /16s and 241 /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: 298662 Total ARIN prefixes after maximum aggregation: 134620 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299000 Unique aggregates announced from the ARIN address blocks: 145645 ARIN Region origin ASes present in the Internet Routing Table: 19353 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7064 ARIN Region transit ASes present in the Internet Routing Table: 1923 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: 5419 Number of ARIN addresses announced to Internet: 1343072512 Equivalent to 80 /8s, 13 /16s and 169 /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: 282573 Total RIPE prefixes after maximum aggregation: 140008 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283449 Unique aggregates announced from the RIPE address blocks: 183981 RIPE Region origin ASes present in the Internet Routing Table: 29123 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12085 RIPE Region transit ASes present in the Internet Routing Table: 4046 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: 12887 Number of RIPE addresses announced to Internet: 735265536 Equivalent to 43 /8s, 211 /16s and 67 /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: 125665 Total LACNIC prefixes after maximum aggregation: 30847 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121435 Unique aggregates announced from the LACNIC address blocks: 49743 LACNIC Region origin ASes present in the Internet Routing Table: 11330 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2686 LACNIC Region transit ASes present in the Internet Routing Table: 2544 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9333 Number of LACNIC addresses announced to Internet: 170494720 Equivalent to 10 /8s, 41 /16s and 139 /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: 36245 Total AfriNIC prefixes after maximum aggregation: 6945 AfriNIC Deaggregation factor: 5.22 Prefixes being announced from the AfriNIC address blocks: 53147 Unique aggregates announced from the AfriNIC address blocks: 19515 AfriNIC Region origin ASes present in the Internet Routing Table: 2003 AfriNIC Prefixes per ASN: 26.53 AfriNIC Region origin ASes announcing only one prefix: 740 AfriNIC Region transit ASes present in the Internet Routing Table: 385 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: 1368 Number of AfriNIC addresses announced to Internet: 103188736 Equivalent to 6 /8s, 38 /16s and 137 /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 13341 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6036 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4638 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4341 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4041 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3727 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3376 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3323 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3167 199 633 LCS-AS-AP LARUS Limited, HK 24560 2955 865 496 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 13990 38461 5438 AMAZON-02, US 22773 4778 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 82 SHAW, CA 174 3445 8769 863 COGENT-174, US 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2844 1218 2134 AKAMAI-AS, US 36352 2702 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 7285 1711 149 UNI2-AS, ES 39891 4901 302 70 ALJAWWALSTC-AS, SA 9009 3960 369 2270 M247, RO 20940 3833 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2566 182 1866 CDNEXT, GB 34984 2421 371 575 TELLCOM-AS, TR 8452 1699 1852 14 TE-AS TE-AS, EG 203020 1617 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 12639 3277 590 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2489 506 351 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1259 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 2486 56 TIM SA, BR 18881 904 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 1940 402 13 RAYA-AS, EG 36992 1847 1538 336 ETISALAT-MISR, EG 24863 1266 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1100 1096 13 MOBINIL, EG 29571 1071 94 22 ORANGE-COTE-IVOIRE, CI 36935 1058 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 567 82 3 KENET-AS, KE 15399 549 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 13990 38461 5438 AMAZON-02, US 9808 13341 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12639 3277 590 UNINET, MX 12479 7285 1711 149 UNI2-AS, ES 7545 6036 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 70 ALJAWWALSTC-AS, SA 22773 4778 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 9498 4638 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4341 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 13341 13221 CHINAMOBILE-CN China Mobile Communications Grou 8151 12639 12049 UNINET, MX 12479 7285 7136 UNI2-AS, ES 7545 6036 5457 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4831 ALJAWWALSTC-AS, SA 22773 4778 4411 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4341 4317 FPT-AS-AP FPT Telecom Company, VN 9498 4638 4305 BBIL-AP BHARTI Airtel Ltd., IN 7552 4041 4012 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 /13:578 /14:1199 /15:2091 /16:13650 /17:8157 /18:13430 /19:24699 /20:44708 /21:51951 /22:112909 /23:105500 /24:641965 /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 6844 12639 UNINET, MX 12479 6216 7285 UNI2-AS, ES 39891 3587 4901 ALJAWWALSTC-AS, SA 11492 3533 4688 CABLEONE, US 6327 3478 3690 SHAW, CA 22773 3048 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2456 13990 AMAZON-02, US 30036 2323 2666 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2450 2:1514 3:978 4:10 5:4986 6:187 7:6 8:1501 9:10 11:172 12:1230 13:599 14:2627 15:417 16:274 17:383 18:914 20:587 21:4 22:188 23:8065 24:2561 25:2 27:2796 29:19 31:3396 32:31 33:1 34:84 35:286 36:4617 37:4519 38:10388 39:1211 40:437 41:4517 42:1916 43:2931 44:411 45:19643 46:5057 47:393 49:2161 50:2052 51:597 52:1273 54:225 55:1129 56:11 57:307 58:2320 59:1341 60:1170 61:3089 62:3100 63:1754 64:5989 65:2123 66:5920 67:3233 68:1502 69:4186 70:1030 71:616 72:3077 74:2923 75:1516 76:597 77:2750 78:1921 79:1799 80:2301 81:2086 82:3899 83:1471 84:2025 85:3642 86:1104 87:2195 88:1358 89:4623 90:835 91:8427 92:2832 93:3018 94:4260 95:4554 96:1428 97:311 98:955 99:784 100:68 101:1338 102:4336 103:32872 104:5452 105:765 106:920 107:2815 108:1209 109:4238 110:2311 111:3982 112:2824 113:1953 114:2091 115:2263 116:2181 117:3173 118:2915 119:2103 120:2412 121:1504 122:2945 123:2286 124:1651 125:2960 126:125 128:1573 129:943 130:1529 131:2247 132:760 133:462 134:1633 135:539 136:1500 137:1210 138:3007 139:1593 140:1771 141:1563 142:2428 143:2126 144:1376 145:625 146:2185 147:2135 148:2787 149:2935 150:1325 151:2581 152:2252 153:813 154:9520 155:2276 156:4703 157:2250 158:1476 159:2728 160:3663 161:1993 162:3983 163:2329 164:1964 165:2657 166:1308 167:2197 168:3904 169:806 170:5449 171:1119 172:4526 173:3422 174:901 175:1353 176:3785 177:4731 178:4324 179:2283 180:2970 181:4351 182:3864 183:2663 184:2037 185:21683 186:5528 187:4771 188:4532 189:4462 190:9668 191:1535 192:11401 193:9507 194:7858 195:5646 196:3301 197:3288 198:6054 199:6107 200:8064 201:6380 202:10473 203:10579 204:4634 205:3715 206:4383 207:3802 208:4343 209:5447 210:4719 211:2681 212:4918 213:4031 214:1066 215:54 216:7108 217:3455 218:1606 219:411 220:2192 221:1291 222:775 223:3235 End of report