IPv4 R&E Routing Table Report 23:00 GMT Fri 16 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: 1024012 Prefixes after maximum aggregation (per Origin AS): 394770 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506987 Number of IPv4 prefixes with a valid ROA: 610754 Number of IPv4 prefixes with an invalid ROA: 645 Number of IPv4 prefixes with no ROA: 412613 Total ASes present in the Internet Routing Table: 77697 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66597 Origin ASes announcing only one prefix: 27151 Transit ASes present in the Internet Routing Table: 11100 Transit-only ASes present in the Internet Routing Table: 571 Paths with bogon ASNs present in the IPv4 Routing Table: 41 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: 1017 Number of instances of unregistered ASNs: 1047 Number of 32-bit ASNs allocated by the RIRs: 48399 Number of 32-bit ASNs visible in the Routing Table: 39617 Prefixes from 32-bit ASNs in the Routing Table: 220539 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 482 Number of addresses announced to Internet: 3105409536 Equivalent to 185 /8s, 24 /16s and 202 /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: 333841 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279548 Total APNIC prefixes after maximum aggregation: 81600 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 266204 Unique aggregates announced from the APNIC address blocks: 106777 APNIC Region origin ASes present in the Internet Routing Table: 14964 APNIC Prefixes per ASN: 17.79 APNIC Region origin ASes announcing only one prefix: 4544 APNIC Region transit ASes present in the Internet Routing Table: 2012 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: 10545 Number of APNIC addresses announced to Internet: 753628928 Equivalent to 44 /8s, 235 /16s and 119 /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: 299490 Total ARIN prefixes after maximum aggregation: 134795 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299464 Unique aggregates announced from the ARIN address blocks: 146068 ARIN Region origin ASes present in the Internet Routing Table: 19370 ARIN Prefixes per ASN: 15.46 ARIN Region origin ASes announcing only one prefix: 7076 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: 5445 Number of ARIN addresses announced to Internet: 1344272128 Equivalent to 80 /8s, 31 /16s and 247 /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: 282006 Total RIPE prefixes after maximum aggregation: 139897 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283698 Unique aggregates announced from the RIPE address blocks: 184519 RIPE Region origin ASes present in the Internet Routing Table: 29117 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12101 RIPE Region transit ASes present in the Internet Routing Table: 4046 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: 12913 Number of RIPE addresses announced to Internet: 733513216 Equivalent to 43 /8s, 184 /16s and 134 /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: 125626 Total LACNIC prefixes after maximum aggregation: 30858 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121455 Unique aggregates announced from the LACNIC address blocks: 49789 LACNIC Region origin ASes present in the Internet Routing Table: 11341 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2682 LACNIC Region transit ASes present in the Internet Routing Table: 2539 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: 9342 Number of LACNIC addresses announced to Internet: 170501888 Equivalent to 10 /8s, 41 /16s and 167 /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: 36325 Total AfriNIC prefixes after maximum aggregation: 6931 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52709 Unique aggregates announced from the AfriNIC address blocks: 19427 AfriNIC Region origin ASes present in the Internet Routing Table: 2005 AfriNIC Prefixes per ASN: 26.29 AfriNIC Region origin ASes announcing only one prefix: 748 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: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1372 Number of AfriNIC addresses announced to Internet: 103201536 Equivalent to 6 /8s, 38 /16s and 187 /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 13501 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 4386 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 3328 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2959 865 498 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2800 176 553 LCS-AS-AP LARUS Limited, HK 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 14061 38739 5437 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 3181 8768 839 COGENT-174, US 749 3145 54729 2396 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 1712 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1586 237 776 HOSTROYALE, IN 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 12676 3300 603 UNINET, MX 10620 3432 457 1107 Telmex Colombia S.A., CO 13999 2486 508 350 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1256 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 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 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 576 82 3 KENET-AS, KE 328608 561 48 172 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 14061 38739 5437 AMAZON-02, US 9808 13501 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12676 3300 603 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 4386 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 13501 13381 CHINAMOBILE-CN China Mobile Communications Grou 8151 12676 12073 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 4386 4362 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 /15:2088 /16:13654 /17:8170 /18:13428 /19:24714 /20:44629 /21:51946 /22:113108 /23:105841 /24:644193 /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 6857 12676 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 2497 14061 AMAZON-02, US 30036 2318 2660 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3432 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) ---------------------------------------------- 1:2492 2:1496 3:975 4:9 5:5015 6:183 7:6 8:1491 9:14 11:172 12:1226 13:625 14:2640 15:414 16:203 17:390 18:918 20:595 21:4 22:188 23:8124 24:2622 25:2 27:2814 29:19 31:3412 32:31 34:84 35:290 36:4632 37:4512 38:9902 39:1247 40:439 41:4495 42:1937 43:2992 44:414 45:19693 46:4927 47:403 49:2168 50:2060 51:598 52:1253 54:233 55:1117 56:11 57:307 58:2339 59:1352 60:1171 61:3124 62:3109 63:1764 64:6163 65:2140 66:5989 67:3258 68:1492 69:4203 70:1030 71:617 72:3062 74:2940 75:1513 76:606 77:2758 78:1918 79:1799 80:2289 81:2081 82:4007 83:1474 84:2015 85:3673 86:1095 87:2203 88:1352 89:4619 90:827 91:8408 92:2855 93:3010 94:4272 95:4521 96:1444 97:312 98:956 99:785 100:69 101:1571 102:4335 103:32946 104:5433 105:769 106:908 107:2822 108:1222 109:4218 110:2307 111:4053 112:3079 113:1971 114:2165 115:2266 116:2181 117:3284 118:2973 119:2098 120:2580 121:1508 122:2956 123:2296 124:1654 125:2974 126:125 128:1580 129:949 130:1546 131:2279 132:763 133:461 134:1620 135:534 136:1628 137:1223 138:2991 139:1605 140:1763 141:1563 142:2468 143:2133 144:1553 145:631 146:2191 147:2269 148:2816 149:2913 150:1326 151:2597 152:2246 153:846 154:9527 155:2267 156:4403 157:2241 158:1490 159:2740 160:3640 161:1997 162:4003 163:2330 164:1972 165:2651 166:1303 167:2190 168:3919 169:842 170:5436 171:1117 172:4544 173:3432 174:893 175:1357 176:3772 177:4710 178:4254 179:2292 180:3114 181:4358 182:3886 183:2745 184:2023 185:21678 186:5529 187:4828 188:4611 189:4486 190:9657 191:1517 192:11415 193:9484 194:7835 195:5681 196:3250 197:3282 198:6076 199:6122 200:8037 201:6380 202:10598 203:10593 204:4666 205:3690 206:4363 207:3811 208:4367 209:5426 210:4731 211:2687 212:4905 213:4034 214:1067 215:54 216:7133 217:3455 218:1619 219:421 220:2192 221:1310 222:876 223:3283 End of report