IPv4 R&E Routing Table Report 23:05 GMT Mon 29 Sep, 2025 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: 1002306 Prefixes after maximum aggregation (per Origin AS): 388753 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495313 Number of IPv4 prefixes with a valid ROA: 573297 Number of IPv4 prefixes with an invalid ROA: 707 Number of IPv4 prefixes with no ROA: 428302 Total ASes present in the Internet Routing Table: 77218 Prefixes per ASN: 12.98 Origin-only ASes present in the Internet Routing Table: 66181 Origin ASes announcing only one prefix: 27024 Transit ASes present in the Internet Routing Table: 11037 Transit-only ASes present in the Internet Routing Table: 552 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1033 Number of instances of unregistered ASNs: 1063 Number of 32-bit ASNs allocated by the RIRs: 47585 Number of 32-bit ASNs visible in the Routing Table: 38968 Prefixes from 32-bit ASNs in the Routing Table: 211452 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: 422 Number of addresses announced to Internet: 3111678976 Equivalent to 185 /8s, 120 /16s and 116 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 326506 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 268822 Total APNIC prefixes after maximum aggregation: 79221 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 258739 Unique aggregates announced from the APNIC address blocks: 105445 APNIC Region origin ASes present in the Internet Routing Table: 14716 APNIC Prefixes per ASN: 17.58 APNIC Region origin ASes announcing only one prefix: 4444 APNIC Region transit ASes present in the Internet Routing Table: 1982 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10302 Number of APNIC addresses announced to Internet: 751120128 Equivalent to 44 /8s, 197 /16s and 47 /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: 293394 Total ARIN prefixes after maximum aggregation: 133562 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 294789 Unique aggregates announced from the ARIN address blocks: 142951 ARIN Region origin ASes present in the Internet Routing Table: 19296 ARIN Prefixes per ASN: 15.28 ARIN Region origin ASes announcing only one prefix: 7092 ARIN Region transit ASes present in the Internet Routing Table: 1930 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 49 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5344 Number of ARIN addresses announced to Internet: 1352726528 Equivalent to 80 /8s, 160 /16s and 248 /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: 279220 Total RIPE prefixes after maximum aggregation: 138167 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278746 Unique aggregates announced from the RIPE address blocks: 180471 RIPE Region origin ASes present in the Internet Routing Table: 29057 RIPE Prefixes per ASN: 9.59 RIPE Region origin ASes announcing only one prefix: 12100 RIPE Region transit ASes present in the Internet Routing Table: 4015 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12733 Number of RIPE addresses announced to Internet: 732930048 Equivalent to 43 /8s, 175 /16s and 160 /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: 124696 Total LACNIC prefixes after maximum aggregation: 30280 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120927 Unique aggregates announced from the LACNIC address blocks: 49439 LACNIC Region origin ASes present in the Internet Routing Table: 11290 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2668 LACNIC Region transit ASes present in the Internet Routing Table: 2529 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9258 Number of LACNIC addresses announced to Internet: 170708736 Equivalent to 10 /8s, 44 /16s and 207 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35141 Total AfriNIC prefixes after maximum aggregation: 6832 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 48683 Unique aggregates announced from the AfriNIC address blocks: 16636 AfriNIC Region origin ASes present in the Internet Routing Table: 1969 AfriNIC Prefixes per ASN: 24.72 AfriNIC Region origin ASes announcing only one prefix: 720 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1331 Number of AfriNIC addresses announced to Internet: 103961600 Equivalent to 6 /8s, 50 /16s and 84 /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 13673 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6162 835 602 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4493 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3302 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3121 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2924 862 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2329 501 1484 HUTCHISON-AS-AP HGC Global Communications 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 14281 40897 5384 AMAZON-02, US 11492 4746 320 804 CABLEONE, US 22773 3951 3045 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3678 1320 82 SHAW, CA 396982 3272 4824 461 GOOGLE-CLOUD-PLATFORM, US 174 3246 8767 864 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3075 238 1707 USDA-1, US 16625 2909 1240 2174 AKAMAI-AS, 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 7446 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3946 369 2205 M247, RO 20940 3909 3395 124 AKAMAI-ASN1, NL 12389 3124 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2444 173 1768 CDNEXT, GB 34984 2412 363 573 TELLCOM-AS, TR 203020 1852 199 871 HOSTROYALE, IN 8452 1622 1852 14 TE-AS TE-AS, EG 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 12372 3278 576 UNINET, MX 10620 3504 474 1047 Telmex Colombia S.A., CO 13999 2542 511 346 Mega Cable, S.A. de C.V., MX 11830 1985 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1229 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1058 67 366 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 2486 56 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 1847 652 28 RAYA-AS, EG 36992 1510 1498 384 ETISALAT-MISR, EG 29571 1280 102 53 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1247 389 20 LINKdotNET-AS, EG 37069 1077 1096 13 MOBINIL, EG 36935 1059 520 42 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 569 82 3 KENET-AS, KE 15399 550 56 54 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 14281 40897 5384 AMAZON-02, US 9808 13673 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12372 3278 576 UNINET, MX 12479 7446 1711 149 UNI2-AS, ES 7545 6162 835 602 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4746 320 804 CABLEONE, US 18403 4493 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 1332 28 VIETEL-AS-AP Viettel Group, 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 13673 13557 CHINAMOBILE-CN China Mobile Communications Grou 8151 12372 11796 UNINET, MX 12479 7446 7297 UNI2-AS, ES 7545 6162 5560 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4493 4467 FPT-AS-AP FPT Telecom Company, VN 9498 4470 4159 BBIL-AP BHARTI Airtel Ltd., IN 11492 4746 3942 CABLEONE, US 7552 3951 3923 VIETEL-AS-AP Viettel Group, VN 20940 3909 3785 AKAMAI-ASN1, NL 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 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 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /10:41 /11:93 /12:301 /13:579 /14:1198 /15:2126 /16:13743 /17:8148 /18:13386 /19:24496 /20:44194 /21:51809 /22:112365 /23:103481 /24:626316 /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 6587 12372 UNINET, MX 12479 6419 7446 UNI2-AS, ES 11492 3560 4746 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3678 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2511 3951 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2422 14281 AMAZON-02, US 30036 2282 2622 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2222 3504 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) ---------------------------------------------- 1:2428 2:1528 3:939 4:10 5:4853 6:170 7:6 8:1536 9:6 11:172 12:1244 13:540 14:2633 15:403 16:303 17:389 18:906 20:573 21:4 22:188 23:7825 24:2649 25:2 27:2790 29:19 31:3347 32:31 33:1 34:84 35:272 36:4450 37:4537 38:9519 39:1090 40:293 41:4345 42:1989 43:2775 44:381 45:18951 46:5125 47:342 49:2024 50:2043 51:589 52:1603 54:359 55:1085 56:11 57:283 58:2252 59:1307 60:1188 61:2938 62:3082 63:1760 64:5626 65:2137 66:4911 67:3094 68:1103 69:3916 70:1044 71:629 72:2919 74:2818 75:1497 76:599 77:2772 78:1897 79:1759 80:2235 81:2104 82:3427 83:1466 84:1974 85:3512 86:1099 87:2123 88:1323 89:4508 90:814 91:8390 92:2779 93:2983 94:4167 95:4461 96:1472 97:312 98:952 99:755 100:71 101:1474 102:4129 103:32726 104:5361 105:771 106:895 107:2657 108:1208 109:4201 110:2254 111:3773 112:2651 113:1858 114:1991 115:2280 116:2086 117:2940 118:3051 119:1949 120:2268 121:1337 122:2814 123:2248 124:1711 125:2880 126:91 128:1567 129:959 130:1270 131:2126 132:779 133:461 134:1604 135:365 136:1492 137:1118 138:2797 139:1608 140:1640 141:1557 142:1914 143:2045 144:1268 145:627 146:2173 147:2118 148:2732 149:2844 150:1282 151:2548 152:2140 153:577 154:7508 155:2053 156:3489 157:2004 158:1413 159:2583 160:3557 161:1989 162:3929 163:2290 164:1925 165:2584 166:1561 167:2096 168:3815 169:774 170:5359 171:1010 172:4248 173:3405 174:905 175:1331 176:3799 177:4705 178:4235 179:2267 180:2723 181:4244 182:3724 183:2641 184:2054 185:21636 186:5371 187:4654 188:4282 189:4372 190:9686 191:1558 192:11378 193:9475 194:7781 195:5578 196:3270 197:3352 198:6097 199:8730 200:8082 201:6352 202:10437 203:10608 204:4571 205:3615 206:4501 207:3556 208:4274 209:5287 210:4706 211:2683 212:4785 213:3879 214:1037 215:52 216:6923 217:3334 218:1564 219:396 220:2191 221:1234 222:750 223:3024 End of report