IPv4 R&E Routing Table Report 23:00 GMT Sun 18 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: 1024178 Prefixes after maximum aggregation (per Origin AS): 394646 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506948 Number of IPv4 prefixes with a valid ROA: 610852 Number of IPv4 prefixes with an invalid ROA: 571 Number of IPv4 prefixes with no ROA: 412755 Total ASes present in the Internet Routing Table: 77705 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66602 Origin ASes announcing only one prefix: 27156 Transit ASes present in the Internet Routing Table: 11103 Transit-only ASes present in the Internet Routing Table: 564 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: 1019 Number of instances of unregistered ASNs: 1049 Number of 32-bit ASNs allocated by the RIRs: 48432 Number of 32-bit ASNs visible in the Routing Table: 39621 Prefixes from 32-bit ASNs in the Routing Table: 220688 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: 466 Number of addresses announced to Internet: 3105672192 Equivalent to 185 /8s, 28 /16s and 204 /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: 334038 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279638 Total APNIC prefixes after maximum aggregation: 81660 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 266215 Unique aggregates announced from the APNIC address blocks: 106833 APNIC Region origin ASes present in the Internet Routing Table: 14972 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4549 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: 10553 Number of APNIC addresses announced to Internet: 753604352 Equivalent to 44 /8s, 235 /16s and 23 /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: 134744 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299436 Unique aggregates announced from the ARIN address blocks: 146096 ARIN Region origin ASes present in the Internet Routing Table: 19368 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: 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: 5442 Number of ARIN addresses announced to Internet: 1344393728 Equivalent to 80 /8s, 33 /16s and 210 /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: 282368 Total RIPE prefixes after maximum aggregation: 139886 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284132 Unique aggregates announced from the RIPE address blocks: 184646 RIPE Region origin ASes present in the Internet Routing Table: 29126 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12109 RIPE Region transit ASes present in the Internet Routing Table: 4044 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: 12912 Number of RIPE addresses announced to Internet: 733704960 Equivalent to 43 /8s, 187 /16s and 115 /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: 125756 Total LACNIC prefixes after maximum aggregation: 30739 LACNIC Deaggregation factor: 4.09 Prefixes being announced from the LACNIC address blocks: 121591 Unique aggregates announced from the LACNIC address blocks: 49700 LACNIC Region origin ASes present in the Internet Routing Table: 11339 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: 9339 Number of LACNIC addresses announced to Internet: 170533632 Equivalent to 10 /8s, 42 /16s and 35 /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: 36273 Total AfriNIC prefixes after maximum aggregation: 6928 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52338 Unique aggregates announced from the AfriNIC address blocks: 19278 AfriNIC Region origin ASes present in the Internet Routing Table: 2007 AfriNIC Prefixes per ASN: 26.08 AfriNIC Region origin ASes announcing only one prefix: 748 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: 1375 Number of AfriNIC addresses announced to Internet: 103152128 Equivalent to 6 /8s, 37 /16s and 250 /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 13502 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4683 543 338 BBIL-AP BHARTI Airtel Ltd., IN 18403 4403 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 3327 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2959 865 498 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2801 176 552 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 14021 38705 5428 AMAZON-02, US 11492 4635 308 1031 CABLEONE, US 22773 4496 3082 299 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3698 1321 70 SHAW, CA 396982 3327 4868 498 GOOGLE-CLOUD-PLATFORM, US 174 3179 8768 839 COGENT-174, US 749 3145 54729 2396 DNIC-AS-00749, US 16625 2820 1209 2120 AKAMAI-AS, US 36352 2706 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 7242 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3905 365 2232 M247, RO 20940 3830 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2573 183 1870 CDNEXT, GB 34984 2425 364 577 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 203020 1623 243 798 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 12679 3300 603 UNINET, MX 10620 3433 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 1257 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 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 1841 1532 339 ETISALAT-MISR, EG 24863 1283 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1144 522 45 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 566 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 14021 38705 5428 AMAZON-02, US 9808 13502 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12679 3300 603 UNINET, MX 12479 7242 1711 149 UNI2-AS, ES 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4683 543 338 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 22773 4496 3082 299 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4403 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 13502 13382 CHINAMOBILE-CN China Mobile Communications Grou 8151 12679 12076 UNINET, MX 12479 7242 7093 UNI2-AS, ES 7545 6027 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4403 4379 FPT-AS-AP FPT Telecom Company, VN 9498 4683 4345 BBIL-AP BHARTI Airtel Ltd., IN 22773 4496 4197 ASN-CXA-ALL-CCI-22773-RDC, US 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 /15:2086 /16:13663 /17:8179 /18:13456 /19:24727 /20:44724 /21:51994 /22:113186 /23:105896 /24:644026 /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 6860 12679 UNINET, MX 12479 6173 7242 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3479 3698 SHAW, CA 22773 3049 4496 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2487 14021 AMAZON-02, US 30036 2318 2660 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) ---------------------------------------------- 1:2482 2:1513 3:977 4:9 5:5004 6:185 7:6 8:1490 9:14 11:172 12:1227 13:621 14:2639 15:414 16:179 17:389 18:917 20:596 21:4 22:188 23:8119 24:2622 25:2 27:2813 29:19 31:3423 32:31 34:84 35:290 36:4632 37:4520 38:9892 39:1245 40:439 41:4445 42:1966 43:2989 44:412 45:19572 46:4927 47:402 48:20 49:2196 50:2061 51:598 52:1254 54:235 55:1071 56:11 57:307 58:2341 59:1353 60:1171 61:3124 62:3101 63:1765 64:6165 65:2134 66:5993 67:3258 68:1489 69:4206 70:1030 71:617 72:3063 74:2944 75:1513 76:606 77:2755 78:1923 79:1797 80:2293 81:2118 82:4014 83:1477 84:2020 85:3670 86:1094 87:2205 88:1351 89:4633 90:827 91:8404 92:2851 93:3009 94:4276 95:4517 96:1447 97:312 98:956 99:782 100:69 101:1583 102:4319 103:32925 104:5440 105:767 106:908 107:2823 108:1221 109:4241 110:2310 111:4052 112:3078 113:1973 114:2165 115:2266 116:2179 117:3285 118:2970 119:2116 120:2580 121:1508 122:2956 123:2296 124:1653 125:2974 126:125 128:1580 129:940 130:1543 131:2282 132:765 133:461 134:1620 135:534 136:1631 137:1222 138:2989 139:1609 140:1759 141:1564 142:2463 143:2130 144:1551 145:631 146:2190 147:2275 148:2812 149:2914 150:1326 151:2611 152:2266 153:846 154:9423 155:2278 156:4290 157:2247 158:1494 159:2741 160:3645 161:1999 162:4011 163:2331 164:1970 165:2652 166:1302 167:2191 168:3909 169:852 170:5445 171:1116 172:4546 173:3431 174:893 175:1356 176:3771 177:4711 178:4272 179:2288 180:3114 181:4364 182:3887 183:2744 184:2023 185:21640 186:5533 187:4823 188:4623 189:4489 190:9678 191:1515 192:11421 193:9483 194:7840 195:5680 196:3255 197:3273 198:6074 199:6114 200:8060 201:6383 202:10594 203:10596 204:4668 205:3689 206:4363 207:3810 208:4364 209:5433 210:4731 211:2685 212:4953 213:4036 214:1060 215:54 216:7136 217:3452 218:1619 219:421 220:2192 221:1308 222:876 223:3283 End of report