IPv4 R&E Routing Table Report 23:05 GMT Tue 17 Jun, 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: 983357 Prefixes after maximum aggregation (per Origin AS): 380200 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 482576 Number of IPv4 prefixes with a valid ROA: 548736 Number of IPv4 prefixes with an invalid ROA: 969 Number of IPv4 prefixes with no ROA: 433652 Total ASes present in the Internet Routing Table: 76820 Prefixes per ASN: 12.80 Origin-only ASes present in the Internet Routing Table: 65845 Origin ASes announcing only one prefix: 26888 Transit ASes present in the Internet Routing Table: 10975 Transit-only ASes present in the Internet Routing Table: 543 Paths with bogon ASNs present in the IPv4 Routing Table: 30 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 73 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1161 Number of instances of unregistered ASNs: 1193 Number of 32-bit ASNs allocated by the RIRs: 46667 Number of 32-bit ASNs visible in the Routing Table: 38359 Prefixes from 32-bit ASNs in the Routing Table: 204396 Number of bogon 32-bit ASNs visible in the Routing Table: 88 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 438 Number of addresses announced to Internet: 3105733376 Equivalent to 185 /8s, 29 /16s and 187 /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: 321726 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 259194 Total APNIC prefixes after maximum aggregation: 77271 APNIC Deaggregation factor: 3.35 Prefixes being announced from the APNIC address blocks: 250624 Unique aggregates announced from the APNIC address blocks: 104413 APNIC Region origin ASes present in the Internet Routing Table: 14602 APNIC Prefixes per ASN: 17.16 APNIC Region origin ASes announcing only one prefix: 4424 APNIC Region transit ASes present in the Internet Routing Table: 1969 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10148 Number of APNIC addresses announced to Internet: 748745728 Equivalent to 44 /8s, 160 /16s and 244 /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: 288987 Total ARIN prefixes after maximum aggregation: 131139 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 290536 Unique aggregates announced from the ARIN address blocks: 139471 ARIN Region origin ASes present in the Internet Routing Table: 19202 ARIN Prefixes per ASN: 15.13 ARIN Region origin ASes announcing only one prefix: 7037 ARIN Region transit ASes present in the Internet Routing Table: 1927 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5226 Number of ARIN addresses announced to Internet: 1349469696 Equivalent to 80 /8s, 111 /16s and 70 /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: 274586 Total RIPE prefixes after maximum aggregation: 134751 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 273350 Unique aggregates announced from the RIPE address blocks: 175778 RIPE Region origin ASes present in the Internet Routing Table: 28921 RIPE Prefixes per ASN: 9.45 RIPE Region origin ASes announcing only one prefix: 12071 RIPE Region transit ASes present in the Internet Routing Table: 3998 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 73 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12489 Number of RIPE addresses announced to Internet: 731132416 Equivalent to 43 /8s, 148 /16s and 50 /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: 123861 Total LACNIC prefixes after maximum aggregation: 29574 LACNIC Deaggregation factor: 4.19 Prefixes being announced from the LACNIC address blocks: 120388 Unique aggregates announced from the LACNIC address blocks: 48946 LACNIC Region origin ASes present in the Internet Routing Table: 11259 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2660 LACNIC Region transit ASes present in the Internet Routing Table: 2514 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 71 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9210 Number of LACNIC addresses announced to Internet: 171280640 Equivalent to 10 /8s, 53 /16s and 137 /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: 35568 Total AfriNIC prefixes after maximum aggregation: 6702 AfriNIC Deaggregation factor: 5.31 Prefixes being announced from the AfriNIC address blocks: 48021 Unique aggregates announced from the AfriNIC address blocks: 13575 AfriNIC Region origin ASes present in the Internet Routing Table: 1923 AfriNIC Prefixes per ASN: 24.97 AfriNIC Region origin ASes announcing only one prefix: 696 AfriNIC Region transit ASes present in the Internet Routing Table: 374 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1286 Number of AfriNIC addresses announced to Internet: 104900352 Equivalent to 6 /8s, 64 /16s and 167 /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 11224 8759 105 CHINAMOBILE-CN China Mobile Communication 7545 6189 847 649 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4453 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4432 535 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3920 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3279 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2891 856 532 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2181 434 193 TATACOMM-AS TATA Communications formerly 45090 2173 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 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 13666 40937 5239 AMAZON-02, US 11492 4762 316 595 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3635 1320 81 SHAW, CA 174 3585 8744 871 COGENT-174, US 22773 3351 3033 170 ASN-CXA-ALL-CCI-22773-RDC, US 749 3229 54767 2480 DNIC-AS-00749, US 396982 3188 3854 427 GOOGLE-CLOUD-PLATFORM, US 16625 3000 1256 2222 AKAMAI-AS, US 36352 2817 230 847 AS-COLOCROSSING, 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 7691 1713 148 UNI2-AS, ES 39891 4780 291 66 ALJAWWALSTC-AS, SA 20940 3937 3395 123 AKAMAI-ASN1, NL 9009 3886 354 2087 M247, RO 12389 3106 2304 885 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 578 TELLCOM-AS, TR 212238 2295 168 1679 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1573 1852 14 TE-AS TE-AS, EG 8551 1418 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet 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 12199 3254 576 UNINET, MX 10620 3501 481 1018 Telmex Colombia S.A., CO 13999 2521 538 353 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1372 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1340 787 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1207 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1201 371 22 Telefonica del Peru S.A.A., PE 22884 1062 67 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1048 2503 52 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 1820 644 27 RAYA-AS, EG 24863 1633 389 16 LINKdotNET-AS, EG 29571 1606 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1519 280 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1049 520 44 Vodafone-, EG 20011 980 185 285 INTERNET-SOLUTIONS, ZA 36914 558 82 3 KENET-AS, KE 15399 543 57 57 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 13666 40937 5239 AMAZON-02, US 8151 12199 3254 576 UNINET, MX 9808 11224 8759 105 CHINAMOBILE-CN China Mobile Communication 12479 7691 1713 148 UNI2-AS, ES 7545 6189 847 649 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 291 66 ALJAWWALSTC-AS, SA 11492 4762 316 595 CABLEONE, US 18403 4453 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4432 535 312 BBIL-AP BHARTI Airtel Ltd., IN 20940 3937 3395 123 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12199 11623 UNINET, MX 9808 11224 11119 CHINAMOBILE-CN China Mobile Communications Grou 12479 7691 7543 UNI2-AS, ES 7545 6189 5540 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 4714 ALJAWWALSTC-AS, SA 18403 4453 4427 FPT-AS-AP FPT Telecom Company, VN 11492 4762 4167 CABLEONE, US 9498 4432 4120 BBIL-AP BHARTI Airtel Ltd., IN 7552 3920 3894 VIETEL-AS-AP Viettel Group, VN 20940 3937 3814 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, 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 394804 UNALLOCATED 8.33.225.0/24 3356 LEVEL3, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, 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: 3491 CONSOLE-CONNECT-ASN, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.155.208.0/24 Origin: 396169 AS-GHCIL-01, US 23.155.208.0/24 Transit: 35985 ONERINGNET-ATL-1, 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 /10:41 /11:92 /12:300 /13:581 /14:1199 /15:2129 /16:13811 /17:8180 /18:13435 /19:24399 /20:43815 /21:51450 /22:111685 /23:102222 /24:609988 /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 12479 6610 7691 UNI2-AS, ES 8151 6416 12199 UNINET, MX 11492 3559 4762 CABLEONE, US 39891 3489 4780 ALJAWWALSTC-AS, SA 6327 3431 3635 SHAW, CA 7155 2820 3861 VIASAT-SP-BACKBONE, US 22773 2499 3351 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2354 13666 AMAZON-02, US 30036 2247 2588 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2188 3501 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) ---------------------------------------------- 1:2387 2:1497 3:825 4:10 5:4782 6:162 7:6 8:1571 9:1 11:172 12:1349 13:456 14:2522 15:360 16:285 17:377 18:920 20:545 21:4 22:188 23:7571 24:2808 25:2 27:2767 29:19 31:3297 32:35 33:1 34:83 35:252 36:3103 37:4594 38:9411 39:906 40:166 41:4244 42:1966 43:2648 44:381 45:18634 46:5101 47:317 49:1941 50:1878 51:592 52:1571 54:328 55:1091 56:11 57:267 58:2210 59:1328 60:1171 61:2835 62:2894 63:1792 64:5446 65:2168 66:4620 67:3054 68:1120 69:3837 70:1070 71:623 72:2848 74:2786 75:1503 76:616 77:2721 78:1882 79:1714 80:2216 81:2033 82:3155 83:1424 84:1864 85:3452 86:1087 87:2135 88:1299 89:4425 90:770 91:8404 92:2727 93:2915 94:4025 95:4336 96:1423 97:311 98:983 99:694 100:73 101:1423 102:3875 103:32722 104:5149 105:762 106:1038 107:2662 108:1238 109:4096 110:2239 111:3277 112:2122 113:1817 114:1992 115:2135 116:2082 117:2533 118:2895 119:1924 120:2054 121:1372 122:2775 123:2181 124:1631 125:2910 126:91 128:1573 129:946 130:1290 131:2032 132:772 133:450 134:1547 135:346 136:1348 137:1120 138:2849 139:1591 140:1605 141:1503 142:1898 143:1859 144:1185 145:543 146:2178 147:2104 148:2706 149:2893 150:1268 151:1966 152:2081 153:524 154:7313 155:1755 156:2974 157:1924 158:1331 159:2491 160:3600 161:1850 162:3847 163:2214 164:1858 165:1987 166:1488 167:1968 168:3995 169:789 170:5133 171:1020 172:4459 173:3327 174:918 175:1304 176:3704 177:4724 178:3736 179:2314 180:2744 181:4059 182:3449 183:2203 184:2063 185:21538 186:5195 187:4543 188:4261 189:4317 190:9575 191:1491 192:11273 193:9479 194:7808 195:5536 196:3284 197:3658 198:6059 199:8528 200:8089 201:6391 202:10243 203:10648 204:4543 205:3607 206:4420 207:3462 208:4261 209:5115 210:4562 211:2536 212:4573 213:3735 214:1030 215:48 216:6739 217:3161 218:1354 219:393 220:2087 221:1136 222:724 223:2480 End of report