IPv4 R&E Routing Table Report 23:05 GMT Fri 09 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: 1022152 Prefixes after maximum aggregation (per Origin AS): 394251 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506295 Number of IPv4 prefixes with a valid ROA: 609624 Number of IPv4 prefixes with an invalid ROA: 663 Number of IPv4 prefixes with no ROA: 411865 Total ASes present in the Internet Routing Table: 77653 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66567 Origin ASes announcing only one prefix: 27110 Transit ASes present in the Internet Routing Table: 11086 Transit-only ASes present in the Internet Routing Table: 565 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: 1059 Number of instances of unregistered ASNs: 1088 Number of 32-bit ASNs allocated by the RIRs: 48328 Number of 32-bit ASNs visible in the Routing Table: 39576 Prefixes from 32-bit ASNs in the Routing Table: 220258 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: 543 Number of addresses announced to Internet: 3103793664 Equivalent to 185 /8s, 0 /16s and 34 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 333635 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277889 Total APNIC prefixes after maximum aggregation: 81054 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 264600 Unique aggregates announced from the APNIC address blocks: 106712 APNIC Region origin ASes present in the Internet Routing Table: 14944 APNIC Prefixes per ASN: 17.71 APNIC Region origin ASes announcing only one prefix: 4527 APNIC Region transit ASes present in the Internet Routing Table: 2007 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: 10528 Number of APNIC addresses announced to Internet: 752846592 Equivalent to 44 /8s, 223 /16s and 135 /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: 299124 Total ARIN prefixes after maximum aggregation: 134787 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299151 Unique aggregates announced from the ARIN address blocks: 145686 ARIN Region origin ASes present in the Internet Routing Table: 19352 ARIN Prefixes per ASN: 15.46 ARIN Region origin ASes announcing only one prefix: 7071 ARIN Region transit ASes present in the Internet Routing Table: 1918 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: 5436 Number of ARIN addresses announced to Internet: 1343221760 Equivalent to 80 /8s, 15 /16s and 240 /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: 282194 Total RIPE prefixes after maximum aggregation: 139949 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283467 Unique aggregates announced from the RIPE address blocks: 184132 RIPE Region origin ASes present in the Internet Routing Table: 29120 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12095 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: 12908 Number of RIPE addresses announced to Internet: 733698304 Equivalent to 43 /8s, 187 /16s and 89 /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: 125487 Total LACNIC prefixes after maximum aggregation: 30843 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121277 Unique aggregates announced from the LACNIC address blocks: 49749 LACNIC Region origin ASes present in the Internet Routing Table: 11329 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2677 LACNIC Region transit ASes present in the Internet Routing Table: 2540 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: 9333 Number of LACNIC addresses announced to Internet: 170479360 Equivalent to 10 /8s, 41 /16s and 79 /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: 36399 Total AfriNIC prefixes after maximum aggregation: 6911 AfriNIC Deaggregation factor: 5.27 Prefixes being announced from the AfriNIC address blocks: 53114 Unique aggregates announced from the AfriNIC address blocks: 19544 AfriNIC Region origin ASes present in the Internet Routing Table: 2006 AfriNIC Prefixes per ASN: 26.48 AfriNIC Region origin ASes announcing only one prefix: 740 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 1371 Number of AfriNIC addresses announced to Internet: 103210240 Equivalent to 6 /8s, 38 /16s and 221 /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 13405 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 574 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4670 543 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4332 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4059 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 3326 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3162 198 620 LCS-AS-AP LARUS Limited, HK 24560 2953 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 38565 5438 AMAZON-02, US 22773 4775 3099 365 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4634 308 1032 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3696 1321 70 SHAW, CA 396982 3326 4868 494 GOOGLE-CLOUD-PLATFORM, US 174 3175 8769 852 COGENT-174, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2834 1216 2125 AKAMAI-AS, US 36352 2704 222 887 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 7266 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3919 366 2243 M247, RO 20940 3830 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2574 183 1871 CDNEXT, GB 34984 2423 371 575 TELLCOM-AS, TR 8452 1709 1852 14 TE-AS TE-AS, EG 203020 1620 243 799 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 12706 3307 595 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2485 507 353 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2433 265 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1257 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR 18881 903 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 1849 1534 341 ETISALAT-MISR, EG 24863 1266 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1110 524 47 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 567 82 3 KENET-AS, KE 328608 559 48 171 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 14158 38565 5438 AMAZON-02, US 9808 13405 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12706 3307 595 UNINET, MX 12479 7266 1711 149 UNI2-AS, ES 7545 6028 833 574 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4775 3099 365 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4670 543 336 BBIL-AP BHARTI Airtel Ltd., IN 11492 4634 308 1032 CABLEONE, US 18403 4332 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 13405 13285 CHINAMOBILE-CN China Mobile Communications Grou 8151 12706 12111 UNINET, MX 12479 7266 7117 UNI2-AS, ES 7545 6028 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4775 4410 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4670 4334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4332 4308 FPT-AS-AP FPT Telecom Company, VN 7552 4059 4030 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 202485 UNALLOCATED 5.83.128.0/24 49581 FERDINANDZINK, DE 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 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 /13:577 /14:1196 /15:2088 /16:13639 /17:8170 /18:13437 /19:24725 /20:44691 /21:51893 /22:112992 /23:105560 /24:642719 /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 6881 12706 UNINET, MX 12479 6197 7266 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4634 CABLEONE, US 6327 3478 3696 SHAW, CA 22773 3046 4775 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2501 14158 AMAZON-02, US 30036 2307 2648 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) ---------------------------------------------- 1:2477 2:1498 3:990 4:9 5:5001 6:187 7:6 8:1506 9:15 11:172 12:1234 13:625 14:2636 15:418 16:275 17:389 18:917 20:594 21:4 22:188 23:8105 24:2622 25:2 27:2808 29:19 31:3400 32:31 34:84 35:288 36:4621 37:4488 38:9917 39:1237 40:437 41:4511 42:1912 43:2973 44:412 45:19692 46:4989 47:395 49:2167 50:2052 51:599 52:1257 54:233 55:1121 56:11 57:309 58:2318 59:1347 60:1171 61:3091 62:3097 63:1765 64:6116 65:2140 66:5995 67:3256 68:1500 69:4203 70:1029 71:616 72:3073 74:2957 75:1516 76:598 77:2766 78:1916 79:1783 80:2294 81:2080 82:3976 83:1473 84:2028 85:3676 86:1099 87:2202 88:1354 89:4619 90:826 91:8414 92:2834 93:3015 94:4236 95:4529 96:1435 97:311 98:955 99:789 100:69 101:1337 102:4346 103:32914 104:5458 105:773 106:907 107:2813 108:1211 109:4214 110:2309 111:4017 112:2965 113:1971 114:2094 115:2263 116:2172 117:3256 118:2975 119:2109 120:2432 121:1506 122:2941 123:2289 124:1654 125:2974 126:125 128:1572 129:958 130:1538 131:2255 132:764 133:461 134:1629 135:536 136:1607 137:1222 138:2978 139:1600 140:1773 141:1561 142:2427 143:2125 144:1414 145:627 146:2187 147:2159 148:2785 149:2914 150:1326 151:2590 152:2248 153:848 154:9637 155:2316 156:4583 157:2250 158:1487 159:2735 160:3656 161:1988 162:3988 163:2323 164:1970 165:2654 166:1285 167:2196 168:3902 169:806 170:5421 171:1117 172:4555 173:3424 174:894 175:1357 176:3771 177:4699 178:4236 179:2296 180:2972 181:4335 182:3883 183:2701 184:2021 185:21696 186:5505 187:4781 188:4605 189:4475 190:9652 191:1510 192:11417 193:9503 194:7832 195:5681 196:3254 197:3289 198:6062 199:6103 200:8003 201:6383 202:10575 203:10568 204:4660 205:3687 206:4351 207:3820 208:4350 209:5448 210:4728 211:2685 212:4909 213:4031 214:1062 215:54 216:7131 217:3454 218:1616 219:414 220:2191 221:1302 222:775 223:3270 End of report