IPv4 R&E Routing Table Report 23:00 GMT Mon 06 Apr, 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: 1036488 Prefixes after maximum aggregation (per Origin AS): 398269 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 512208 Number of IPv4 prefixes with a valid ROA: 626923 Number of IPv4 prefixes with an invalid ROA: 445 Number of IPv4 prefixes with no ROA: 409120 Total ASes present in the Internet Routing Table: 78142 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66961 Origin ASes announcing only one prefix: 27319 Transit ASes present in the Internet Routing Table: 11181 Transit-only ASes present in the Internet Routing Table: 582 Paths with bogon ASNs present in the IPv4 Routing Table: 40 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1028 Number of instances of unregistered ASNs: 1060 Number of 32-bit ASNs allocated by the RIRs: 49225 Number of 32-bit ASNs visible in the Routing Table: 40238 Prefixes from 32-bit ASNs in the Routing Table: 226714 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 396 Number of addresses announced to Internet: 3107339264 Equivalent to 185 /8s, 54 /16s and 60 /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: 337805 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282919 Total APNIC prefixes after maximum aggregation: 82396 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269804 Unique aggregates announced from the APNIC address blocks: 107491 APNIC Region origin ASes present in the Internet Routing Table: 15104 APNIC Prefixes per ASN: 17.86 APNIC Region origin ASes announcing only one prefix: 4602 APNIC Region transit ASes present in the Internet Routing Table: 2038 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10689 Number of APNIC addresses announced to Internet: 752869120 Equivalent to 44 /8s, 223 /16s and 223 /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: 301660 Total ARIN prefixes after maximum aggregation: 135516 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301199 Unique aggregates announced from the ARIN address blocks: 146550 ARIN Region origin ASes present in the Internet Routing Table: 19385 ARIN Prefixes per ASN: 15.54 ARIN Region origin ASes announcing only one prefix: 7112 ARIN Region transit ASes present in the Internet Routing Table: 1919 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 29 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5534 Number of ARIN addresses announced to Internet: 1348273408 Equivalent to 80 /8s, 93 /16s and 5 /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, 393216-404380 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: 286774 Total RIPE prefixes after maximum aggregation: 141974 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 289034 Unique aggregates announced from the RIPE address blocks: 188201 RIPE Region origin ASes present in the Internet Routing Table: 29356 RIPE Prefixes per ASN: 9.85 RIPE Region origin ASes announcing only one prefix: 12164 RIPE Region transit ASes present in the Internet Routing Table: 4055 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13229 Number of RIPE addresses announced to Internet: 732732672 Equivalent to 43 /8s, 172 /16s and 157 /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: 127106 Total LACNIC prefixes after maximum aggregation: 30744 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122632 Unique aggregates announced from the LACNIC address blocks: 50224 LACNIC Region origin ASes present in the Internet Routing Table: 11379 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2709 LACNIC Region transit ASes present in the Internet Routing Table: 2591 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: 9406 Number of LACNIC addresses announced to Internet: 169907456 Equivalent to 10 /8s, 32 /16s and 149 /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: 37001 Total AfriNIC prefixes after maximum aggregation: 6981 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53423 Unique aggregates announced from the AfriNIC address blocks: 19398 AfriNIC Region origin ASes present in the Internet Routing Table: 2014 AfriNIC Prefixes per ASN: 26.53 AfriNIC Region origin ASes announcing only one prefix: 732 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.2 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1380 Number of AfriNIC addresses announced to Internet: 103300864 Equivalent to 6 /8s, 40 /16s and 63 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 13812 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5918 828 500 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4888 549 322 BBIL-AP BHARTI Airtel Ltd., IN 18403 4570 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3658 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3483 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3353 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3006 859 522 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2850 179 539 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 14518 41228 5641 AMAZON-02 - Amazon.com, Inc., US 22773 4784 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4668 310 1030 CABLEONE - CABLE ONE, INC., US 7155 3860 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3724 1305 77 SHAW - Shaw Communications, CA 396982 3300 4857 491 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3241 8767 823 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2707 222 893 AS-COLOCROSSING - HostPapa, US 30036 2662 364 330 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C 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 7171 1711 149 UNI2-AS, ES 39891 4972 306 72 ALJAWWALSTC-AS, SA 9009 3820 353 2244 M247, RO 20940 3812 3389 110 AKAMAI-ASN1, NL 12389 3141 2318 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2702 195 1985 CDNEXT, GB 34984 2447 364 570 TELLCOM-AS, TR 8452 1725 1852 14 TE-AS TE-AS, EG 203020 1636 248 808 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 12819 3292 611 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2463 506 344 Mega Cable, S.A. de C.V., MX 11830 1946 369 65 Instituto Costarricense de Electricidad y 11664 1461 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1373 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1243 371 22 INTEGRATEL PERU S.A.A., PE 26615 1059 2393 95 TIM SA, BR 22884 1057 71 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 2025 648 34 RAYA-AS, EG 36992 1856 1532 339 ETISALAT-MISR, EG 24863 1295 389 16 LINKdotNET-AS, EG 36935 1241 523 45 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1117 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 20011 589 155 220 NTT-DATA-Inc, ZA 15399 554 57 59 WANANCHI-, KE 36914 547 82 3 KENET-AS, KE 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 14518 41228 5641 AMAZON-02 - Amazon.com, Inc., US 9808 13812 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12819 3292 611 UNINET, MX 12479 7171 1711 149 UNI2-AS, ES 7545 5918 828 500 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 306 72 ALJAWWALSTC-AS, SA 9498 4888 549 322 BBIL-AP BHARTI Airtel Ltd., IN 22773 4784 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4668 310 1030 CABLEONE - CABLE ONE, INC., US 18403 4570 347 26 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 13812 13692 CHINAMOBILE-CN China Mobile Communications Grou 8151 12819 12208 UNINET, MX 12479 7171 7022 UNI2-AS, ES 7545 5918 5418 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 4900 ALJAWWALSTC-AS, SA 9498 4888 4566 BBIL-AP BHARTI Airtel Ltd., IN 18403 4570 4544 FPT-AS-AP FPT Telecom Company, VN 22773 4784 4418 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4056 4027 VIETEL-AS-AP Viettel Group, VN 7155 3860 3775 VIASAT-SP-BACKBONE - ViaSat,Inc., 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 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3 - Level 3 Parent 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 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, 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 /11:95 /12:297 /13:581 /14:1189 /15:2093 /16:13580 /17:8235 /18:13237 /19:25317 /20:45612 /21:52135 /22:113436 /23:106942 /24:653669 /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 6997 12819 UNINET, MX 12479 6113 7171 UNI2-AS, ES 39891 3656 4972 ALJAWWALSTC-AS, SA 11492 3528 4668 CABLEONE - CABLE ONE, INC., US 6327 3504 3724 SHAW - Shaw Communications, CA 22773 3055 4784 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2819 3860 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2614 14518 AMAZON-02 - Amazon.com, Inc., US 30036 2313 2662 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2232 3452 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) ---------------------------------------------- 1:2501 2:1797 3:993 4:5 5:5183 6:196 7:6 8:1488 9:39 11:172 12:1189 13:669 14:2677 15:456 16:170 17:423 18:911 20:583 21:4 22:188 23:8188 24:2780 25:2 27:2820 28:1 29:19 31:3418 32:36 34:90 35:281 36:4658 37:4435 38:10053 39:1278 40:422 41:4532 42:2188 43:3092 44:445 45:19848 46:4872 47:408 48:121 49:2229 50:2000 51:626 52:1295 54:273 55:1117 56:11 57:317 58:2366 59:1386 60:1173 61:3165 62:3118 63:1737 64:6290 65:2136 66:6056 67:3253 68:1497 69:4188 70:1058 71:607 72:3161 74:3012 75:1482 76:581 77:2918 78:1955 79:1790 80:2343 81:2186 82:4027 83:1447 84:2128 85:3784 86:1089 87:2305 88:1348 89:4694 90:783 91:8414 92:2822 93:3007 94:4347 95:4649 96:1449 97:314 98:943 99:809 100:68 101:1624 102:4471 103:32991 104:5332 105:820 106:912 107:2864 108:1221 109:4215 110:2302 111:4112 112:3156 113:1972 114:2264 115:2286 116:2180 117:3504 118:2998 119:2110 120:2689 121:1543 122:2980 123:2274 124:1705 125:3011 126:125 128:1590 129:970 130:1611 131:2468 132:806 133:475 134:1663 135:600 136:1607 137:1345 138:3261 139:1634 140:1759 141:1726 142:2518 143:2137 144:1704 145:642 146:2198 147:2179 148:2763 149:3096 150:1370 151:2779 152:2311 153:1007 154:9567 155:2320 156:4454 157:2279 158:1520 159:2819 160:3832 161:1958 162:4030 163:2481 164:2038 165:2641 166:1271 167:2287 168:3979 169:850 170:5534 171:1121 172:4528 173:3466 174:881 175:1375 176:3863 177:4807 178:4389 179:2285 180:3162 181:4493 182:4014 183:2835 184:2019 185:21792 186:5767 187:4949 188:4617 189:4516 190:9797 191:1563 192:11457 193:9576 194:7866 195:5815 196:3335 197:3352 198:6105 199:6060 200:8094 201:6401 202:10673 203:10641 204:4755 205:3722 206:4476 207:3821 208:4373 209:5381 210:4709 211:2687 212:5005 213:4095 214:1054 215:47 216:7245 217:3562 218:1701 219:424 220:2202 221:1312 222:938 223:3416 End of report