IPv4 R&E Routing Table Report 23:00 GMT Mon 23 Mar, 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: 1034679 Prefixes after maximum aggregation (per Origin AS): 397255 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 510974 Number of IPv4 prefixes with a valid ROA: 624370 Number of IPv4 prefixes with an invalid ROA: 447 Number of IPv4 prefixes with no ROA: 409862 Total ASes present in the Internet Routing Table: 78104 Prefixes per ASN: 13.25 Origin-only ASes present in the Internet Routing Table: 66919 Origin ASes announcing only one prefix: 27264 Transit ASes present in the Internet Routing Table: 11185 Transit-only ASes present in the Internet Routing Table: 588 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: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1080 Number of instances of unregistered ASNs: 1112 Number of 32-bit ASNs allocated by the RIRs: 49057 Number of 32-bit ASNs visible in the Routing Table: 40143 Prefixes from 32-bit ASNs in the Routing Table: 225722 Number of bogon 32-bit ASNs visible in the Routing Table: 84 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 393 Number of addresses announced to Internet: 3106950912 Equivalent to 185 /8s, 48 /16s and 79 /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: 337133 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281888 Total APNIC prefixes after maximum aggregation: 82039 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 268973 Unique aggregates announced from the APNIC address blocks: 107118 APNIC Region origin ASes present in the Internet Routing Table: 15106 APNIC Prefixes per ASN: 17.81 APNIC Region origin ASes announcing only one prefix: 4603 APNIC Region transit ASes present in the Internet Routing Table: 2048 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: 10679 Number of APNIC addresses announced to Internet: 751773440 Equivalent to 44 /8s, 207 /16s and 39 /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: 302249 Total ARIN prefixes after maximum aggregation: 135637 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301635 Unique aggregates announced from the ARIN address blocks: 146440 ARIN Region origin ASes present in the Internet Routing Table: 19393 ARIN Prefixes per ASN: 15.55 ARIN Region origin ASes announcing only one prefix: 7094 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: 29 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5524 Number of ARIN addresses announced to Internet: 1348985856 Equivalent to 80 /8s, 103 /16s and 228 /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: 285815 Total RIPE prefixes after maximum aggregation: 141287 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 287943 Unique aggregates announced from the RIPE address blocks: 187350 RIPE Region origin ASes present in the Internet Routing Table: 29321 RIPE Prefixes per ASN: 9.82 RIPE Region origin ASes announcing only one prefix: 12146 RIPE Region transit ASes present in the Internet Routing Table: 4066 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: 13181 Number of RIPE addresses announced to Internet: 732218368 Equivalent to 43 /8s, 164 /16s and 196 /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: 126684 Total LACNIC prefixes after maximum aggregation: 30643 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122362 Unique aggregates announced from the LACNIC address blocks: 50251 LACNIC Region origin ASes present in the Internet Routing Table: 11364 LACNIC Prefixes per ASN: 10.77 LACNIC Region origin ASes announcing only one prefix: 2690 LACNIC Region transit ASes present in the Internet Routing Table: 2565 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: 9386 Number of LACNIC addresses announced to Internet: 170378496 Equivalent to 10 /8s, 39 /16s and 197 /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: 36963 Total AfriNIC prefixes after maximum aggregation: 6951 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 53373 Unique aggregates announced from the AfriNIC address blocks: 19472 AfriNIC Region origin ASes present in the Internet Routing Table: 2008 AfriNIC Prefixes per ASN: 26.58 AfriNIC Region origin ASes announcing only one prefix: 731 AfriNIC Region transit ASes present in the Internet Routing Table: 378 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: 1373 Number of AfriNIC addresses announced to Internet: 103338496 Equivalent to 6 /8s, 40 /16s and 210 /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 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5953 829 509 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 18403 4562 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4033 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3674 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3478 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3334 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3004 862 511 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2810 177 543 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 14509 41222 5586 AMAZON-02 - Amazon.com, Inc., US 22773 4779 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4648 309 1021 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3711 1321 75 SHAW - Shaw Communications, CA 396982 3293 4856 487 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3235 8766 849 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2705 222 886 AS-COLOCROSSING - HostPapa, US 16625 2698 1179 2096 AKAMAI-AS - Akamai Technologies, Inc., 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 7201 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3837 356 2251 M247, RO 20940 3820 3389 110 AKAMAI-ASN1, NL 12389 3149 2319 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2680 194 1964 CDNEXT, GB 34984 2466 366 568 TELLCOM-AS, TR 8452 1703 1852 14 TE-AS TE-AS, EG 203020 1630 247 806 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 3302 595 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1958 369 65 Instituto Costarricense de Electricidad y 11664 1451 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1372 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1341 770 214 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1244 371 22 INTEGRATEL PERU S.A.A., PE 22884 1057 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1057 2475 94 TIM SA, 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 2045 648 34 RAYA-AS, EG 36992 1843 1531 336 ETISALAT-MISR, EG 24863 1289 389 16 LINKdotNET-AS, EG 36935 1247 524 47 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1109 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 587 154 220 NTT-DATA-Inc, ZA 36914 555 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 14509 41222 5586 AMAZON-02 - Amazon.com, Inc., US 9808 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12826 3302 595 UNINET, MX 12479 7201 1711 149 UNI2-AS, ES 7545 5953 829 509 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 22773 4779 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4648 309 1021 CABLEONE - CABLE ONE, INC., US 18403 4562 347 25 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 13760 13640 CHINAMOBILE-CN China Mobile Communications Grou 8151 12826 12231 UNINET, MX 12479 7201 7052 UNI2-AS, ES 7545 5953 5444 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4562 4537 FPT-AS-AP FPT Telecom Company, VN 9498 4850 4528 BBIL-AP BHARTI Airtel Ltd., IN 22773 4779 4413 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4033 4004 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 397665 UNALLOCATED 12.24.28.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 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 /14:1192 /15:2088 /16:13574 /17:8230 /18:13221 /19:25294 /20:45607 /21:52175 /22:113561 /23:106925 /24:651769 /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 6986 12826 UNINET, MX 12479 6142 7201 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3508 4648 CABLEONE - CABLE ONE, INC., US 6327 3491 3711 SHAW - Shaw Communications, CA 22773 3048 4779 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2606 14509 AMAZON-02 - Amazon.com, Inc., US 30036 2319 2668 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) ---------------------------------------------- 1:2488 2:1674 3:1002 4:5 5:5203 6:197 7:6 8:1503 9:38 11:172 12:1190 13:659 14:2667 15:459 16:169 17:421 18:918 20:582 21:4 22:188 23:8192 24:2841 25:2 27:2824 28:1 29:19 31:3406 32:36 34:90 35:292 36:4653 37:4461 38:9995 39:1273 40:413 41:4538 42:2206 43:3058 44:445 45:19851 46:4876 47:407 48:99 49:2191 50:2038 51:614 52:1301 54:279 55:1118 56:11 57:315 58:2357 59:1361 60:1175 61:3125 62:3115 63:1750 64:6225 65:2129 66:6007 67:3256 68:1495 69:4210 70:1056 71:604 72:3141 74:2989 75:1488 76:592 77:2890 78:1919 79:1791 80:2332 81:2197 82:4005 83:1436 84:2082 85:3820 86:1095 87:2282 88:1348 89:4697 90:794 91:8413 92:2840 93:2998 94:4315 95:4628 96:1439 97:314 98:945 99:805 100:68 101:1623 102:4479 103:32957 104:5331 105:820 106:924 107:2835 108:1224 109:4204 110:2301 111:4104 112:3154 113:1977 114:2260 115:2286 116:2192 117:3489 118:2994 119:2083 120:2686 121:1542 122:2979 123:2250 124:1689 125:3014 126:125 128:1659 129:956 130:1598 131:2457 132:803 133:462 134:1641 135:608 136:1583 137:1348 138:3165 139:1638 140:1759 141:1646 142:2515 143:2093 144:1703 145:630 146:2194 147:2164 148:2732 149:3044 150:1351 151:2721 152:2302 153:964 154:9477 155:2322 156:4373 157:2270 158:1504 159:2799 160:3825 161:1954 162:4028 163:2424 164:2038 165:2633 166:1300 167:2251 168:3956 169:883 170:5534 171:1109 172:4523 173:3463 174:884 175:1378 176:3833 177:4781 178:4328 179:2299 180:3164 181:4471 182:4015 183:2829 184:2013 185:21777 186:5721 187:4909 188:4566 189:4515 190:9763 191:1562 192:11432 193:9578 194:7841 195:5787 196:3319 197:3335 198:6098 199:6094 200:8085 201:6405 202:10679 203:10633 204:4720 205:3735 206:4472 207:3838 208:4371 209:5392 210:4721 211:2687 212:4972 213:4110 214:1055 215:46 216:7236 217:3534 218:1692 219:420 220:2201 221:1308 222:925 223:3398 End of report