IPv4 R&E Routing Table Report 23:00 GMT Wed 25 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: 1035270 Prefixes after maximum aggregation (per Origin AS): 397577 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511103 Number of IPv4 prefixes with a valid ROA: 625003 Number of IPv4 prefixes with an invalid ROA: 447 Number of IPv4 prefixes with no ROA: 409820 Total ASes present in the Internet Routing Table: 78122 Prefixes per ASN: 13.25 Origin-only ASes present in the Internet Routing Table: 66918 Origin ASes announcing only one prefix: 27291 Transit ASes present in the Internet Routing Table: 11204 Transit-only ASes present in the Internet Routing Table: 581 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: 1077 Number of instances of unregistered ASNs: 1109 Number of 32-bit ASNs allocated by the RIRs: 49085 Number of 32-bit ASNs visible in the Routing Table: 40173 Prefixes from 32-bit ASNs in the Routing Table: 226144 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: 399 Number of addresses announced to Internet: 3106806528 Equivalent to 185 /8s, 46 /16s and 27 /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: 337489 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282041 Total APNIC prefixes after maximum aggregation: 82101 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 269036 Unique aggregates announced from the APNIC address blocks: 107145 APNIC Region origin ASes present in the Internet Routing Table: 15112 APNIC Prefixes per ASN: 17.80 APNIC Region origin ASes announcing only one prefix: 4604 APNIC Region transit ASes present in the Internet Routing Table: 2042 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10685 Number of APNIC addresses announced to Internet: 751809792 Equivalent to 44 /8s, 207 /16s and 181 /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: 302360 Total ARIN prefixes after maximum aggregation: 135585 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301890 Unique aggregates announced from the ARIN address blocks: 146430 ARIN Region origin ASes present in the Internet Routing Table: 19398 ARIN Prefixes per ASN: 15.56 ARIN Region origin ASes announcing only one prefix: 7116 ARIN Region transit ASes present in the Internet Routing Table: 1927 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: 1348916480 Equivalent to 80 /8s, 102 /16s and 213 /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: 286023 Total RIPE prefixes after maximum aggregation: 141503 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 288119 Unique aggregates announced from the RIPE address blocks: 187559 RIPE Region origin ASes present in the Internet Routing Table: 29321 RIPE Prefixes per ASN: 9.83 RIPE Region origin ASes announcing only one prefix: 12149 RIPE Region transit ASes present in the Internet Routing Table: 4076 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: 13182 Number of RIPE addresses announced to Internet: 732279808 Equivalent to 43 /8s, 165 /16s and 180 /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: 126791 Total LACNIC prefixes after maximum aggregation: 30718 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122433 Unique aggregates announced from the LACNIC address blocks: 50203 LACNIC Region origin ASes present in the Internet Routing Table: 11373 LACNIC Prefixes per ASN: 10.77 LACNIC Region origin ASes announcing only one prefix: 2693 LACNIC Region transit ASes present in the Internet Routing Table: 2576 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: 9395 Number of LACNIC addresses announced to Internet: 170192896 Equivalent to 10 /8s, 36 /16s and 240 /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: 36978 Total AfriNIC prefixes after maximum aggregation: 6973 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53393 Unique aggregates announced from the AfriNIC address blocks: 19417 AfriNIC Region origin ASes present in the Internet Routing Table: 2014 AfriNIC Prefixes per ASN: 26.51 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: 1380 Number of AfriNIC addresses announced to Internet: 103344384 Equivalent to 6 /8s, 40 /16s and 233 /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 13765 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5954 829 509 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4851 548 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4598 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4052 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 3342 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3005 861 512 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2802 176 541 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 14504 41220 5589 AMAZON-02 - Amazon.com, Inc., US 22773 4781 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4652 309 1024 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3713 1321 75 SHAW - Shaw Communications, CA 396982 3295 4856 488 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3216 8763 830 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2705 222 886 AS-COLOCROSSING - HostPapa, US 16625 2701 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 7195 1711 149 UNI2-AS, ES 39891 4971 306 72 ALJAWWALSTC-AS, SA 9009 3842 356 2252 M247, RO 20940 3839 3389 110 AKAMAI-ASN1, NL 12389 3149 2319 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2682 194 1966 CDNEXT, GB 34984 2455 365 570 TELLCOM-AS, TR 8452 1710 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 12766 3291 618 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1959 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 1342 770 213 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 1055 2474 93 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 1854 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 1117 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 587 154 220 NTT-DATA-Inc, ZA 15399 554 57 59 WANANCHI-, KE 36914 552 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 14504 41220 5589 AMAZON-02 - Amazon.com, Inc., US 9808 13765 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12766 3291 618 UNINET, MX 12479 7195 1711 149 UNI2-AS, ES 7545 5954 829 509 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4971 306 72 ALJAWWALSTC-AS, SA 9498 4851 548 317 BBIL-AP BHARTI Airtel Ltd., IN 22773 4781 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4652 309 1024 CABLEONE - CABLE ONE, INC., US 18403 4598 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 13765 13645 CHINAMOBILE-CN China Mobile Communications Grou 8151 12766 12148 UNINET, MX 12479 7195 7046 UNI2-AS, ES 7545 5954 5445 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4971 4899 ALJAWWALSTC-AS, SA 18403 4598 4573 FPT-AS-AP FPT Telecom Company, VN 9498 4851 4534 BBIL-AP BHARTI Airtel Ltd., IN 22773 4781 4415 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4052 4023 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 /13:582 /14:1193 /15:2089 /16:13571 /17:8229 /18:13211 /19:25313 /20:45593 /21:52140 /22:113515 /23:106922 /24:652450 /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 6947 12766 UNINET, MX 12479 6137 7195 UNI2-AS, ES 39891 3655 4971 ALJAWWALSTC-AS, SA 11492 3512 4652 CABLEONE - CABLE ONE, INC., US 6327 3493 3713 SHAW - Shaw Communications, CA 22773 3050 4781 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2597 14504 AMAZON-02 - Amazon.com, Inc., US 30036 2320 2669 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3453 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 2:1683 3:1001 4:5 5:5190 6:196 7:6 8:1500 9:38 11:172 12:1192 13:660 14:2668 15:459 16:169 17:421 18:918 20:582 21:4 22:188 23:8206 24:2855 25:2 27:2821 28:2 29:19 31:3403 32:36 34:90 35:292 36:4655 37:4454 38:9982 39:1273 40:410 41:4555 42:2230 43:3064 44:446 45:19881 46:4873 47:406 48:99 49:2204 50:2032 51:617 52:1307 54:279 55:1115 56:11 57:317 58:2357 59:1361 60:1175 61:3124 62:3118 63:1752 64:6236 65:2128 66:6013 67:3254 68:1498 69:4220 70:1055 71:605 72:3145 74:2993 75:1488 76:590 77:2898 78:1920 79:1794 80:2328 81:2203 82:3999 83:1435 84:2085 85:3824 86:1094 87:2292 88:1349 89:4698 90:788 91:8399 92:2839 93:3012 94:4324 95:4622 96:1446 97:314 98:943 99:802 100:68 101:1622 102:4473 103:32986 104:5332 105:820 106:924 107:2839 108:1226 109:4218 110:2302 111:4109 112:3161 113:1977 114:2264 115:2288 116:2195 117:3490 118:3000 119:2080 120:2689 121:1545 122:2983 123:2250 124:1689 125:3015 126:125 128:1659 129:955 130:1597 131:2449 132:809 133:463 134:1641 135:605 136:1586 137:1345 138:3154 139:1640 140:1759 141:1676 142:2515 143:2100 144:1705 145:636 146:2196 147:2159 148:2726 149:3061 150:1350 151:2720 152:2305 153:982 154:9543 155:2318 156:4378 157:2275 158:1504 159:2819 160:3829 161:1948 162:4020 163:2435 164:2038 165:2640 166:1293 167:2256 168:3976 169:878 170:5527 171:1116 172:4543 173:3477 174:885 175:1376 176:3819 177:4811 178:4347 179:2345 180:3164 181:4470 182:4017 183:2830 184:2007 185:21791 186:5756 187:4910 188:4613 189:4508 190:9780 191:1560 192:11441 193:9577 194:7841 195:5793 196:3324 197:3327 198:6099 199:6097 200:8065 201:6398 202:10670 203:10634 204:4736 205:3731 206:4475 207:3854 208:4370 209:5423 210:4721 211:2686 212:4981 213:4101 214:1053 215:46 216:7253 217:3543 218:1692 219:421 220:2202 221:1307 222:927 223:3401 End of report