IPv4 R&E Routing Table Report 23:05 GMT Mon 04 Aug, 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: 990840 Prefixes after maximum aggregation (per Origin AS): 383900 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 488515 Number of IPv4 prefixes with a valid ROA: 546656 Number of IPv4 prefixes with an invalid ROA: 843 Number of IPv4 prefixes with no ROA: 443341 Total ASes present in the Internet Routing Table: 77033 Prefixes per ASN: 12.86 Origin-only ASes present in the Internet Routing Table: 65987 Origin ASes announcing only one prefix: 26936 Transit ASes present in the Internet Routing Table: 11046 Transit-only ASes present in the Internet Routing Table: 552 Paths with bogon ASNs present in the IPv4 Routing Table: 25 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 52 Max AS path prepend of ASN (212940) 45 Prefixes from unregistered ASNs in the Routing Table: 1129 Number of instances of unregistered ASNs: 1161 Number of 32-bit ASNs allocated by the RIRs: 47047 Number of 32-bit ASNs visible in the Routing Table: 38682 Prefixes from 32-bit ASNs in the Routing Table: 207066 Number of bogon 32-bit ASNs visible in the Routing Table: 78 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 407 Number of addresses announced to Internet: 3107550720 Equivalent to 185 /8s, 57 /16s and 118 /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: 322791 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 263912 Total APNIC prefixes after maximum aggregation: 78077 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 255054 Unique aggregates announced from the APNIC address blocks: 105139 APNIC Region origin ASes present in the Internet Routing Table: 14705 APNIC Prefixes per ASN: 17.34 APNIC Region origin ASes announcing only one prefix: 4468 APNIC Region transit ASes present in the Internet Routing Table: 2001 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10264 Number of APNIC addresses announced to Internet: 749638656 Equivalent to 44 /8s, 174 /16s and 148 /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: 290341 Total ARIN prefixes after maximum aggregation: 132005 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291937 Unique aggregates announced from the ARIN address blocks: 141533 ARIN Region origin ASes present in the Internet Routing Table: 19223 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7047 ARIN Region transit ASes present in the Internet Routing Table: 1924 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: 5265 Number of ARIN addresses announced to Internet: 1349329920 Equivalent to 80 /8s, 109 /16s and 36 /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: 276110 Total RIPE prefixes after maximum aggregation: 136384 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 275031 Unique aggregates announced from the RIPE address blocks: 178243 RIPE Region origin ASes present in the Internet Routing Table: 28974 RIPE Prefixes per ASN: 9.49 RIPE Region origin ASes announcing only one prefix: 12067 RIPE Region transit ASes present in the Internet Routing Table: 4018 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 50 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12607 Number of RIPE addresses announced to Internet: 732120064 Equivalent to 43 /8s, 163 /16s and 68 /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: 124568 Total LACNIC prefixes after maximum aggregation: 29872 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120920 Unique aggregates announced from the LACNIC address blocks: 49142 LACNIC Region origin ASes present in the Internet Routing Table: 11277 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2645 LACNIC Region transit ASes present in the Internet Routing Table: 2527 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9237 Number of LACNIC addresses announced to Internet: 171171840 Equivalent to 10 /8s, 51 /16s and 224 /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: 34780 Total AfriNIC prefixes after maximum aggregation: 6824 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47491 Unique aggregates announced from the AfriNIC address blocks: 14102 AfriNIC Region origin ASes present in the Internet Routing Table: 1943 AfriNIC Prefixes per ASN: 24.44 AfriNIC Region origin ASes announcing only one prefix: 709 AfriNIC Region transit ASes present in the Internet Routing Table: 375 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 41 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1309 Number of AfriNIC addresses announced to Internet: 105050624 Equivalent to 6 /8s, 66 /16s and 242 /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 12395 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6138 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4572 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3909 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3668 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3293 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2915 864 511 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2891 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2176 427 184 TATACOMM-AS TATA Communications formerly 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 13698 41056 5279 AMAZON-02, US 11492 4827 320 607 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3490 8769 853 COGENT-174, US 22773 3341 3030 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3200 3856 434 GOOGLE-CLOUD-PLATFORM, US 16625 2925 1237 2180 AKAMAI-AS, US 4155 2898 220 1739 USDA-1, 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 7568 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3904 3395 123 AKAMAI-ASN1, NL 9009 3845 365 2156 M247, RO 12389 3111 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2314 163 1683 CDNEXT, GB 13188 1605 100 37 TRIOLAN, UA 8452 1579 1852 14 TE-AS TE-AS, EG 203020 1524 191 672 HOSTROYALE, IN 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 12314 3270 575 UNINET, MX 10620 3481 473 1037 Telmex Colombia S.A., CO 13999 2517 511 355 Mega Cable, S.A. de C.V., MX 11830 1983 369 64 Instituto Costarricense de Electricidad y 28573 1372 2435 269 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1188 371 22 Telefonica del Peru S.A.A., PE 11664 1070 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1063 68 369 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1022 373 162 Axtel, S.A.B. de C.V., MX 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 1738 660 28 RAYA-AS, EG 29571 1604 102 51 ORANGE-COTE-IVOIRE, CI 36992 1410 1494 372 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1233 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 939 520 43 Vodafone-, EG 36914 572 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 533 56 53 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 13698 41056 5279 AMAZON-02, US 9808 12395 8762 116 CHINAMOBILE-CN China Mobile Communication 8151 12314 3270 575 UNINET, MX 12479 7568 1711 149 UNI2-AS, ES 7545 6138 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4827 320 607 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4572 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3909 1332 27 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 12395 12279 CHINAMOBILE-CN China Mobile Communications Grou 8151 12314 11739 UNINET, MX 12479 7568 7419 UNI2-AS, ES 7545 6138 5515 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4572 4545 FPT-AS-AP FPT Telecom Company, VN 11492 4827 4220 CABLEONE, US 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 7552 3909 3882 VIETEL-AS-AP Viettel Group, VN 20940 3904 3781 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 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 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 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: 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /12:298 /13:577 /14:1199 /15:2129 /16:13759 /17:8160 /18:13424 /19:24446 /20:43837 /21:51553 /22:111804 /23:102574 /24:616917 /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 6539 12314 UNINET, MX 12479 6529 7568 UNI2-AS, ES 11492 3619 4827 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2492 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2365 13698 AMAZON-02, US 30036 2292 2633 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2197 3481 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) ---------------------------------------------- 1:2427 2:1494 3:864 4:10 5:4751 6:162 7:6 8:1546 9:2 11:172 12:1337 13:457 14:2579 15:367 16:286 17:376 18:898 20:561 21:4 22:188 23:7720 24:2672 25:2 27:2782 29:19 31:3355 32:35 33:1 34:83 35:260 36:4061 37:4554 38:9551 39:947 40:248 41:4269 42:2045 43:2733 44:377 45:18731 46:5046 47:336 49:1899 50:2036 51:591 52:1554 54:325 55:1108 56:11 57:270 58:2216 59:1300 60:1172 61:2915 62:2989 63:1782 64:5539 65:2156 66:4727 67:3079 68:1067 69:3878 70:1037 71:624 72:2850 74:2795 75:1503 76:610 77:2774 78:1894 79:1718 80:2203 81:2046 82:3190 83:1435 84:1903 85:3480 86:1095 87:2124 88:1311 89:4426 90:775 91:8410 92:2715 93:2941 94:4079 95:4383 96:1448 97:309 98:954 99:695 100:71 101:1473 102:3889 103:32859 104:5280 105:806 106:976 107:2641 108:1257 109:4176 110:2240 111:3445 112:2354 113:1853 114:1973 115:2203 116:2090 117:2640 118:2975 119:1938 120:2191 121:1323 122:2790 123:2233 124:1703 125:2903 126:90 128:1576 129:963 130:1287 131:2051 132:773 133:450 134:1595 135:351 136:1465 137:1124 138:2831 139:1593 140:1612 141:1522 142:1890 143:1954 144:1173 145:564 146:2177 147:2098 148:2722 149:2946 150:1291 151:2256 152:2090 153:524 154:7557 155:1856 156:3057 157:1945 158:1357 159:2525 160:3594 161:1891 162:3876 163:2243 164:1877 165:2442 166:1533 167:2016 168:3978 169:777 170:5177 171:999 172:4228 173:3405 174:919 175:1326 176:3720 177:4785 178:3944 179:2319 180:2728 181:4140 182:3563 183:2322 184:2061 185:21579 186:5262 187:4663 188:4266 189:4380 190:9557 191:1499 192:11294 193:9471 194:7782 195:5590 196:3271 197:3197 198:6080 199:8604 200:8093 201:6397 202:10383 203:10647 204:4579 205:3555 206:4461 207:3514 208:4265 209:5121 210:4633 211:2602 212:4576 213:3805 214:1021 215:47 216:6779 217:3246 218:1394 219:399 220:2152 221:1204 222:740 223:2744 End of report