IPv4 R&E Routing Table Report 23:00 GMT Wed 01 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: 1036192 Prefixes after maximum aggregation (per Origin AS): 398122 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511505 Number of IPv4 prefixes with a valid ROA: 626398 Number of IPv4 prefixes with an invalid ROA: 443 Number of IPv4 prefixes with no ROA: 409351 Total ASes present in the Internet Routing Table: 78131 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66932 Origin ASes announcing only one prefix: 27288 Transit ASes present in the Internet Routing Table: 11199 Transit-only ASes present in the Internet Routing Table: 597 Paths with bogon ASNs present in the IPv4 Routing Table: 39 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: 1071 Number of instances of unregistered ASNs: 1103 Number of 32-bit ASNs allocated by the RIRs: 49169 Number of 32-bit ASNs visible in the Routing Table: 40213 Prefixes from 32-bit ASNs in the Routing Table: 226622 Number of bogon 32-bit ASNs visible in the Routing Table: 80 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 400 Number of addresses announced to Internet: 3107337472 Equivalent to 185 /8s, 54 /16s and 53 /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: 337907 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282643 Total APNIC prefixes after maximum aggregation: 82304 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269574 Unique aggregates announced from the APNIC address blocks: 107205 APNIC Region origin ASes present in the Internet Routing Table: 15100 APNIC Prefixes per ASN: 17.85 APNIC Region origin ASes announcing only one prefix: 4605 APNIC Region transit ASes present in the Internet Routing Table: 2040 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: 10688 Number of APNIC addresses announced to Internet: 752861952 Equivalent to 44 /8s, 223 /16s and 195 /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: 301969 Total ARIN prefixes after maximum aggregation: 135630 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301563 Unique aggregates announced from the ARIN address blocks: 146545 ARIN Region origin ASes present in the Internet Routing Table: 19379 ARIN Prefixes per ASN: 15.56 ARIN Region origin ASes announcing only one prefix: 7102 ARIN Region transit ASes present in the Internet Routing Table: 1920 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: 5531 Number of ARIN addresses announced to Internet: 1348414208 Equivalent to 80 /8s, 95 /16s and 43 /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: 286436 Total RIPE prefixes after maximum aggregation: 141776 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 288650 Unique aggregates announced from the RIPE address blocks: 187828 RIPE Region origin ASes present in the Internet Routing Table: 29344 RIPE Prefixes per ASN: 9.84 RIPE Region origin ASes announcing only one prefix: 12154 RIPE Region transit ASes present in the Internet Routing Table: 4069 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13215 Number of RIPE addresses announced to Internet: 732671488 Equivalent to 43 /8s, 171 /16s and 174 /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: 127115 Total LACNIC prefixes after maximum aggregation: 30747 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122610 Unique aggregates announced from the LACNIC address blocks: 50189 LACNIC Region origin ASes present in the Internet Routing Table: 11373 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2698 LACNIC Region transit ASes present in the Internet Routing Table: 2580 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: 9402 Number of LACNIC addresses announced to Internet: 169824512 Equivalent to 10 /8s, 31 /16s and 81 /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: 36958 Total AfriNIC prefixes after maximum aggregation: 6967 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53395 Unique aggregates announced from the AfriNIC address blocks: 19390 AfriNIC Region origin ASes present in the Internet Routing Table: 2011 AfriNIC Prefixes per ASN: 26.55 AfriNIC Region origin ASes announcing only one prefix: 729 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: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1377 Number of AfriNIC addresses announced to Internet: 103307520 Equivalent to 6 /8s, 40 /16s and 89 /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 13788 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5925 828 501 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4877 548 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4553 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 4054 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3663 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3477 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3352 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3007 861 514 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2831 178 538 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 14488 41224 5656 AMAZON-02 - Amazon.com, Inc., US 22773 4782 3101 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4661 309 1027 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3721 1305 77 SHAW - Shaw Communications, CA 396982 3297 4857 490 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3233 8767 823 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2703 222 892 AS-COLOCROSSING - HostPapa, US 30036 2661 364 329 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 7162 1711 149 UNI2-AS, ES 39891 4972 306 72 ALJAWWALSTC-AS, SA 20940 3824 3389 110 AKAMAI-ASN1, NL 9009 3818 353 2242 M247, RO 12389 3145 2321 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2700 195 1983 CDNEXT, GB 34984 2453 365 570 TELLCOM-AS, TR 8452 1724 1852 14 TE-AS TE-AS, EG 203020 1632 248 807 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 12826 3294 609 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2463 506 344 Mega Cable, S.A. de C.V., MX 11830 1948 369 65 Instituto Costarricense de Electricidad y 11664 1460 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1372 2430 272 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 1058 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 1850 1528 336 ETISALAT-MISR, EG 24863 1278 389 14 LINKdotNET-AS, EG 36935 1246 523 46 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 36914 557 82 3 KENET-AS, KE 15399 554 57 59 WANANCHI-, 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 14488 41224 5656 AMAZON-02 - Amazon.com, Inc., US 9808 13788 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12826 3294 609 UNINET, MX 12479 7162 1711 149 UNI2-AS, ES 7545 5925 828 501 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 306 72 ALJAWWALSTC-AS, SA 9498 4877 548 317 BBIL-AP BHARTI Airtel Ltd., IN 22773 4782 3101 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4661 309 1027 CABLEONE - CABLE ONE, INC., US 18403 4553 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 13788 13668 CHINAMOBILE-CN China Mobile Communications Grou 8151 12826 12217 UNINET, MX 12479 7162 7013 UNI2-AS, ES 7545 5925 5424 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 4900 ALJAWWALSTC-AS, SA 9498 4877 4560 BBIL-AP BHARTI Airtel Ltd., IN 18403 4553 4527 FPT-AS-AP FPT Telecom Company, VN 22773 4782 4417 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4054 4025 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 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 /14:1190 /15:2094 /16:13574 /17:8227 /18:13225 /19:25322 /20:45641 /21:52123 /22:113478 /23:106853 /24:653422 /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 7000 12826 UNINET, MX 12479 6104 7162 UNI2-AS, ES 39891 3656 4972 ALJAWWALSTC-AS, SA 11492 3521 4661 CABLEONE - CABLE ONE, INC., US 6327 3501 3721 SHAW - Shaw Communications, CA 22773 3053 4782 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2612 14488 AMAZON-02 - Amazon.com, Inc., US 30036 2312 2661 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) ---------------------------------------------- 1:2486 2:1754 3:991 4:5 5:5187 6:195 7:6 8:1489 9:39 11:172 12:1187 13:667 14:2676 15:456 16:169 17:423 18:904 20:583 21:4 22:188 23:8196 24:2856 25:2 27:2820 28:1 29:19 31:3418 32:36 34:90 35:283 36:4655 37:4438 38:10025 39:1276 40:423 41:4545 42:2196 43:3079 44:448 45:19891 46:4868 47:409 48:117 49:2215 50:2020 51:626 52:1296 54:273 55:1121 56:11 57:317 58:2352 59:1389 60:1173 61:3155 62:3121 63:1743 64:6295 65:2135 66:6040 67:3256 68:1501 69:4213 70:1059 71:607 72:3167 74:3007 75:1487 76:591 77:2919 78:1942 79:1794 80:2339 81:2196 82:4025 83:1444 84:2116 85:3792 86:1091 87:2315 88:1348 89:4694 90:784 91:8411 92:2823 93:3008 94:4347 95:4636 96:1446 97:314 98:941 99:809 100:68 101:1620 102:4454 103:32974 104:5333 105:819 106:910 107:2863 108:1240 109:4209 110:2299 111:4126 112:3139 113:1972 114:2262 115:2287 116:2190 117:3500 118:2987 119:2112 120:2689 121:1544 122:2978 123:2234 124:1704 125:3017 126:125 128:1664 129:958 130:1596 131:2457 132:801 133:475 134:1662 135:610 136:1606 137:1346 138:3159 139:1630 140:1764 141:1719 142:2521 143:2106 144:1717 145:643 146:2199 147:2169 148:2762 149:3087 150:1365 151:2744 152:2312 153:990 154:9560 155:2315 156:4461 157:2283 158:1517 159:2809 160:3838 161:1955 162:4025 163:2461 164:2041 165:2633 166:1284 167:2253 168:3975 169:884 170:5524 171:1118 172:4521 173:3461 174:880 175:1376 176:3819 177:4837 178:4360 179:2297 180:3154 181:4486 182:4015 183:2831 184:2018 185:21761 186:5760 187:4956 188:4617 189:4541 190:9805 191:1558 192:11447 193:9580 194:7861 195:5805 196:3318 197:3358 198:6102 199:6081 200:8090 201:6415 202:10673 203:10631 204:4751 205:3728 206:4478 207:3834 208:4374 209:5405 210:4711 211:2690 212:4992 213:4108 214:1056 215:47 216:7290 217:3549 218:1698 219:423 220:2201 221:1308 222:928 223:3408 End of report