IPv4 R&E Routing Table Report 23:00 GMT Thu 15 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: 1024562 Prefixes after maximum aggregation (per Origin AS): 394822 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 507209 Number of IPv4 prefixes with a valid ROA: 611028 Number of IPv4 prefixes with an invalid ROA: 660 Number of IPv4 prefixes with no ROA: 412874 Total ASes present in the Internet Routing Table: 77683 Prefixes per ASN: 13.19 Origin-only ASes present in the Internet Routing Table: 66587 Origin ASes announcing only one prefix: 27125 Transit ASes present in the Internet Routing Table: 11096 Transit-only ASes present in the Internet Routing Table: 569 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: 1012 Number of instances of unregistered ASNs: 1041 Number of 32-bit ASNs allocated by the RIRs: 48386 Number of 32-bit ASNs visible in the Routing Table: 39611 Prefixes from 32-bit ASNs in the Routing Table: 220595 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: 518 Number of addresses announced to Internet: 3105546496 Equivalent to 185 /8s, 26 /16s and 225 /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: 333862 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279862 Total APNIC prefixes after maximum aggregation: 81666 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 266187 Unique aggregates announced from the APNIC address blocks: 106838 APNIC Region origin ASes present in the Internet Routing Table: 14963 APNIC Prefixes per ASN: 17.79 APNIC Region origin ASes announcing only one prefix: 4541 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: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10547 Number of APNIC addresses announced to Internet: 753674240 Equivalent to 44 /8s, 236 /16s and 40 /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: 299445 Total ARIN prefixes after maximum aggregation: 134777 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299467 Unique aggregates announced from the ARIN address blocks: 146005 ARIN Region origin ASes present in the Internet Routing Table: 19363 ARIN Prefixes per ASN: 15.47 ARIN Region origin ASes announcing only one prefix: 7066 ARIN Region transit ASes present in the Internet Routing Table: 1921 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: 5441 Number of ARIN addresses announced to Internet: 1344299264 Equivalent to 80 /8s, 32 /16s and 97 /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: 282153 Total RIPE prefixes after maximum aggregation: 139946 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283753 Unique aggregates announced from the RIPE address blocks: 184578 RIPE Region origin ASes present in the Internet Routing Table: 29112 RIPE Prefixes per ASN: 9.75 RIPE Region origin ASes announcing only one prefix: 12092 RIPE Region transit ASes present in the Internet Routing Table: 4042 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: 12909 Number of RIPE addresses announced to Internet: 733562368 Equivalent to 43 /8s, 185 /16s and 70 /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: 125724 Total LACNIC prefixes after maximum aggregation: 30852 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121557 Unique aggregates announced from the LACNIC address blocks: 49787 LACNIC Region origin ASes present in the Internet Routing Table: 11343 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2679 LACNIC Region transit ASes present in the Internet Routing Table: 2536 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: 9340 Number of LACNIC addresses announced to Internet: 170510336 Equivalent to 10 /8s, 41 /16s and 200 /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: 36366 Total AfriNIC prefixes after maximum aggregation: 6897 AfriNIC Deaggregation factor: 5.27 Prefixes being announced from the AfriNIC address blocks: 53080 Unique aggregates announced from the AfriNIC address blocks: 19558 AfriNIC Region origin ASes present in the Internet Routing Table: 2006 AfriNIC Prefixes per ASN: 26.46 AfriNIC Region origin ASes announcing only one prefix: 747 AfriNIC Region transit ASes present in the Internet Routing Table: 383 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1374 Number of AfriNIC addresses announced to Internet: 103203840 Equivalent to 6 /8s, 38 /16s and 196 /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 13499 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4679 543 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4397 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4052 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3419 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3331 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3147 197 612 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 14140 38738 5435 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 3698 1321 70 SHAW, CA 396982 3327 4868 498 GOOGLE-CLOUD-PLATFORM, US 174 3192 8769 852 COGENT-174, US 749 3144 54729 2395 DNIC-AS-00749, US 16625 2820 1209 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 7240 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3906 365 2233 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 1716 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 12638 3300 602 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2485 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 1258 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 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 1850 1534 342 ETISALAT-MISR, EG 24863 1280 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1146 524 47 Vodafone-, EG 37069 1101 1096 13 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 569 82 3 KENET-AS, KE 328608 552 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 14140 38738 5435 AMAZON-02, US 9808 13499 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12638 3300 602 UNINET, MX 12479 7240 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 4679 543 340 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 18403 4397 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 13499 13379 CHINAMOBILE-CN China Mobile Communications Grou 8151 12638 12036 UNINET, MX 12479 7240 7091 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 4397 4373 FPT-AS-AP FPT Telecom Company, VN 9498 4679 4339 BBIL-AP BHARTI Airtel Ltd., IN 7552 4052 4023 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 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 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3, 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 /15:2087 /16:13654 /17:8174 /18:13429 /19:24725 /20:44657 /21:51961 /22:113162 /23:105816 /24:644656 /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 6824 12638 UNINET, MX 12479 6171 7240 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3479 3698 SHAW, CA 22773 3049 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2498 14140 AMAZON-02, US 30036 2316 2658 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) ---------------------------------------------- 1:2488 2:1495 3:979 4:9 5:5014 6:187 7:6 8:1488 9:14 11:172 12:1226 13:625 14:2642 15:418 16:275 17:390 18:917 20:595 21:4 22:188 23:8112 24:2623 25:2 27:2810 29:19 31:3410 32:31 34:84 35:290 36:4632 37:4510 38:9905 39:1246 40:434 41:4511 42:1963 43:2985 44:415 45:19706 46:4976 47:393 49:2168 50:2061 51:598 52:1253 54:235 55:1117 56:11 57:308 58:2319 59:1353 60:1171 61:3124 62:3109 63:1766 64:6160 65:2132 66:5991 67:3257 68:1493 69:4201 70:1029 71:617 72:3062 74:2930 75:1513 76:606 77:2767 78:1918 79:1799 80:2292 81:2079 82:4010 83:1475 84:2020 85:3674 86:1096 87:2206 88:1352 89:4635 90:827 91:8410 92:2855 93:3011 94:4273 95:4516 96:1441 97:311 98:957 99:785 100:69 101:1581 102:4334 103:32925 104:5433 105:768 106:906 107:2821 108:1213 109:4220 110:2313 111:4049 112:3063 113:1972 114:2165 115:2269 116:2178 117:3284 118:2981 119:2115 120:2581 121:1508 122:2956 123:2294 124:1653 125:2974 126:125 128:1579 129:934 130:1545 131:2286 132:764 133:461 134:1620 135:534 136:1628 137:1225 138:2994 139:1603 140:1764 141:1557 142:2467 143:2138 144:1542 145:631 146:2191 147:2274 148:2814 149:2913 150:1326 151:2596 152:2249 153:846 154:9641 155:2270 156:4603 157:2249 158:1488 159:2736 160:3653 161:1995 162:3996 163:2328 164:1971 165:2655 166:1301 167:2199 168:3921 169:837 170:5444 171:1118 172:4540 173:3432 174:893 175:1357 176:3775 177:4697 178:4243 179:2288 180:3114 181:4356 182:3886 183:2745 184:2024 185:21679 186:5531 187:4796 188:4607 189:4485 190:9673 191:1519 192:11414 193:9499 194:7837 195:5680 196:3253 197:3289 198:6077 199:6123 200:8067 201:6370 202:10593 203:10588 204:4664 205:3683 206:4346 207:3808 208:4365 209:5432 210:4732 211:2685 212:4951 213:4035 214:1065 215:54 216:7133 217:3459 218:1619 219:421 220:2190 221:1308 222:875 223:3283 End of report