IPv4 R&E Routing Table Report 23:00 GMT Wed 14 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: 1023986 Prefixes after maximum aggregation (per Origin AS): 394758 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506697 Number of IPv4 prefixes with a valid ROA: 610571 Number of IPv4 prefixes with an invalid ROA: 666 Number of IPv4 prefixes with no ROA: 412749 Total ASes present in the Internet Routing Table: 77676 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66598 Origin ASes announcing only one prefix: 27143 Transit ASes present in the Internet Routing Table: 11078 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: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1015 Number of instances of unregistered ASNs: 1044 Number of 32-bit ASNs allocated by the RIRs: 48375 Number of 32-bit ASNs visible in the Routing Table: 39601 Prefixes from 32-bit ASNs in the Routing Table: 220167 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: 534 Number of addresses announced to Internet: 3105560576 Equivalent to 185 /8s, 27 /16s and 24 /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: 333819 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279610 Total APNIC prefixes after maximum aggregation: 81609 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 265966 Unique aggregates announced from the APNIC address blocks: 106691 APNIC Region origin ASes present in the Internet Routing Table: 14952 APNIC Prefixes per ASN: 17.79 APNIC Region origin ASes announcing only one prefix: 4534 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: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10538 Number of APNIC addresses announced to Internet: 753636352 Equivalent to 44 /8s, 235 /16s and 148 /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: 299397 Total ARIN prefixes after maximum aggregation: 134809 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299420 Unique aggregates announced from the ARIN address blocks: 145818 ARIN Region origin ASes present in the Internet Routing Table: 19369 ARIN Prefixes per ASN: 15.46 ARIN Region origin ASes announcing only one prefix: 7075 ARIN Region transit ASes present in the Internet Routing Table: 1920 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 27 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5444 Number of ARIN addresses announced to Internet: 1344485888 Equivalent to 80 /8s, 35 /16s and 58 /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: 282237 Total RIPE prefixes after maximum aggregation: 139944 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283811 Unique aggregates announced from the RIPE address blocks: 184513 RIPE Region origin ASes present in the Internet Routing Table: 29118 RIPE Prefixes per ASN: 9.75 RIPE Region origin ASes announcing only one prefix: 12106 RIPE Region transit ASes present in the Internet Routing Table: 4040 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 209 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12911 Number of RIPE addresses announced to Internet: 733542144 Equivalent to 43 /8s, 184 /16s and 247 /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: 125639 Total LACNIC prefixes after maximum aggregation: 30851 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121462 Unique aggregates announced from the LACNIC address blocks: 49787 LACNIC Region origin ASes present in the Internet Routing Table: 11339 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2680 LACNIC Region transit ASes present in the Internet Routing Table: 2535 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: 9337 Number of LACNIC addresses announced to Internet: 170476800 Equivalent to 10 /8s, 41 /16s and 69 /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: 36088 Total AfriNIC prefixes after maximum aggregation: 6859 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 52793 Unique aggregates announced from the AfriNIC address blocks: 19430 AfriNIC Region origin ASes present in the Internet Routing Table: 2005 AfriNIC Prefixes per ASN: 26.33 AfriNIC Region origin ASes announcing only one prefix: 748 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: 1371 Number of AfriNIC addresses announced to Internet: 103116544 Equivalent to 6 /8s, 37 /16s and 111 /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 13474 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4676 543 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4377 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4053 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3410 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3330 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3163 198 613 LCS-AS-AP LARUS Limited, HK 24560 2955 865 498 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 14158 38739 5427 AMAZON-02, US 22773 4778 3099 365 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4635 308 1031 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3696 1321 70 SHAW, CA 396982 3325 4868 496 GOOGLE-CLOUD-PLATFORM, US 174 3192 8770 854 COGENT-174, US 749 3145 54729 2396 DNIC-AS-00749, US 16625 2821 1210 2120 AKAMAI-AS, US 36352 2707 222 890 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 7263 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3928 367 2247 M247, RO 20940 3830 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2575 183 1872 CDNEXT, GB 34984 2424 372 576 TELLCOM-AS, TR 8452 1713 1852 14 TE-AS TE-AS, EG 203020 1626 243 800 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 12716 3308 596 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2487 508 350 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1374 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1255 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 2486 56 TIM SA, BR 18881 912 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 1850 1534 342 ETISALAT-MISR, EG 24863 1266 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1137 524 47 Vodafone-, EG 37069 1101 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 572 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 14158 38739 5427 AMAZON-02, US 9808 13474 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12716 3308 596 UNINET, MX 12479 7263 1711 149 UNI2-AS, ES 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4778 3099 365 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4676 543 339 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 18403 4377 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 13474 13354 CHINAMOBILE-CN China Mobile Communications Grou 8151 12716 12120 UNINET, MX 12479 7263 7114 UNI2-AS, ES 7545 6027 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4778 4413 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4377 4353 FPT-AS-AP FPT Telecom Company, VN 9498 4676 4337 BBIL-AP BHARTI Airtel Ltd., IN 7552 4053 4024 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 395476 UNALLOCATED 12.36.194.0/24 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 /10:40 /11:93 /12:302 /13:578 /14:1198 /15:2089 /16:13655 /17:8179 /18:13422 /19:24733 /20:44690 /21:51958 /22:113107 /23:105774 /24:644138 /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 6884 12716 UNINET, MX 12479 6194 7263 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3478 3696 SHAW, CA 22773 3049 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2503 14158 AMAZON-02, US 30036 2310 2652 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) ---------------------------------------------- 1:2484 2:1496 3:978 4:9 5:5018 6:187 7:6 8:1490 9:15 11:172 12:1225 13:634 14:2642 15:417 16:275 17:389 18:916 20:595 21:4 22:188 23:8112 24:2625 25:2 27:2809 29:19 31:3413 32:31 34:84 35:289 36:4626 37:4509 38:9915 39:1243 40:434 41:4484 42:1938 43:2983 44:413 45:19545 46:4973 47:395 49:2168 50:2058 51:598 52:1259 54:235 55:1118 56:11 57:309 58:2317 59:1349 60:1171 61:3123 62:3107 63:1766 64:6113 65:2139 66:5999 67:3257 68:1499 69:4205 70:1037 71:616 72:3073 74:2942 75:1516 76:606 77:2769 78:1920 79:1800 80:2292 81:2078 82:4001 83:1475 84:2028 85:3677 86:1095 87:2206 88:1352 89:4634 90:829 91:8409 92:2861 93:3012 94:4270 95:4526 96:1440 97:312 98:956 99:791 100:69 101:1580 102:4313 103:32900 104:5446 105:768 106:905 107:2820 108:1210 109:4190 110:2310 111:4025 112:3061 113:1974 114:2166 115:2226 116:2174 117:3286 118:2988 119:2113 120:2579 121:1508 122:2954 123:2290 124:1652 125:2974 126:125 128:1576 129:951 130:1544 131:2267 132:764 133:461 134:1620 135:535 136:1623 137:1225 138:2984 139:1608 140:1764 141:1570 142:2468 143:2138 144:1432 145:631 146:2191 147:2271 148:2796 149:2914 150:1332 151:2592 152:2250 153:845 154:9634 155:2287 156:4580 157:2239 158:1487 159:2738 160:3653 161:1999 162:3995 163:2328 164:1970 165:2653 166:1301 167:2197 168:3910 169:835 170:5443 171:1119 172:4555 173:3428 174:893 175:1358 176:3774 177:4682 178:4248 179:2301 180:3113 181:4353 182:3884 183:2740 184:2023 185:21679 186:5524 187:4790 188:4605 189:4482 190:9672 191:1518 192:11414 193:9508 194:7830 195:5676 196:3252 197:3297 198:6079 199:6141 200:8050 201:6383 202:10560 203:10582 204:4670 205:3692 206:4344 207:3818 208:4357 209:5441 210:4730 211:2687 212:4950 213:4033 214:1066 215:54 216:7125 217:3460 218:1620 219:421 220:2191 221:1305 222:875 223:3273 End of report