IPv4 R&E Routing Table Report 23:05 GMT Mon 11 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: 992474 Prefixes after maximum aggregation (per Origin AS): 384702 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 489005 Number of IPv4 prefixes with a valid ROA: 561009 Number of IPv4 prefixes with an invalid ROA: 800 Number of IPv4 prefixes with no ROA: 430665 Total ASes present in the Internet Routing Table: 77066 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66018 Origin ASes announcing only one prefix: 26977 Transit ASes present in the Internet Routing Table: 11048 Transit-only ASes present in the Internet Routing Table: 546 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: 57 Max AS path prepend of ASN ( 37447) 36 Prefixes from unregistered ASNs in the Routing Table: 1127 Number of instances of unregistered ASNs: 1159 Number of 32-bit ASNs allocated by the RIRs: 47115 Number of 32-bit ASNs visible in the Routing Table: 38719 Prefixes from 32-bit ASNs in the Routing Table: 207323 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 424 Number of addresses announced to Internet: 3107485440 Equivalent to 185 /8s, 56 /16s and 119 /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: 323150 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 264822 Total APNIC prefixes after maximum aggregation: 78235 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 255714 Unique aggregates announced from the APNIC address blocks: 104940 APNIC Region origin ASes present in the Internet Routing Table: 14719 APNIC Prefixes per ASN: 17.37 APNIC Region origin ASes announcing only one prefix: 4474 APNIC Region transit ASes present in the Internet Routing Table: 2000 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10272 Number of APNIC addresses announced to Internet: 749446400 Equivalent to 44 /8s, 171 /16s and 165 /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: 290847 Total ARIN prefixes after maximum aggregation: 132329 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 292364 Unique aggregates announced from the ARIN address blocks: 141821 ARIN Region origin ASes present in the Internet Routing Table: 19230 ARIN Prefixes per ASN: 15.20 ARIN Region origin ASes announcing only one prefix: 7049 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: 5271 Number of ARIN addresses announced to Internet: 1349389312 Equivalent to 80 /8s, 110 /16s and 12 /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: 276831 Total RIPE prefixes after maximum aggregation: 136679 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 275879 Unique aggregates announced from the RIPE address blocks: 178617 RIPE Region origin ASes present in the Internet Routing Table: 28991 RIPE Prefixes per ASN: 9.52 RIPE Region origin ASes announcing only one prefix: 12084 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: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12621 Number of RIPE addresses announced to Internet: 732091392 Equivalent to 43 /8s, 162 /16s and 212 /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: 124117 Total LACNIC prefixes after maximum aggregation: 29929 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 120436 Unique aggregates announced from the LACNIC address blocks: 49090 LACNIC Region origin ASes present in the Internet Routing Table: 11278 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2661 LACNIC Region transit ASes present in the Internet Routing Table: 2537 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9242 Number of LACNIC addresses announced to Internet: 171176960 Equivalent to 10 /8s, 51 /16s and 244 /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: 34730 Total AfriNIC prefixes after maximum aggregation: 6798 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 47657 Unique aggregates announced from the AfriNIC address blocks: 14160 AfriNIC Region origin ASes present in the Internet Routing Table: 1948 AfriNIC Prefixes per ASN: 24.46 AfriNIC Region origin ASes announcing only one prefix: 709 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1313 Number of AfriNIC addresses announced to Internet: 105140736 Equivalent to 6 /8s, 68 /16s and 82 /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 12628 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 617 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4583 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4466 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3709 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3297 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2969 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2922 865 506 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2176 427 181 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 13767 41092 5301 AMAZON-02, US 11492 4783 317 680 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3643 1320 82 SHAW, CA 174 3621 8769 855 COGENT-174, US 22773 3340 3029 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3204 3858 436 GOOGLE-CLOUD-PLATFORM, US 16625 2917 1231 2173 AKAMAI-AS, US 4155 2913 227 1733 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 7565 1711 153 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3908 3395 123 AKAMAI-ASN1, NL 9009 3860 366 2177 M247, RO 12389 3112 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 584 TELLCOM-AS, TR 212238 2327 165 1692 CDNEXT, GB 13188 1605 100 37 TRIOLAN, UA 8452 1581 1852 14 TE-AS TE-AS, EG 203020 1521 191 669 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 12325 3272 580 UNINET, MX 10620 3474 472 1051 Telmex Colombia S.A., CO 13999 2529 511 354 Mega Cable, S.A. de C.V., MX 11830 1986 369 64 Instituto Costarricense de Electricidad y 28573 1371 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1184 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 26615 1017 2487 55 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 1770 660 28 RAYA-AS, EG 29571 1488 94 32 ORANGE-COTE-IVOIRE, CI 36992 1420 1495 375 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1241 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 972 520 43 Vodafone-, EG 36914 569 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 529 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 13767 41092 5301 AMAZON-02, US 9808 12628 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12325 3272 580 UNINET, MX 12479 7565 1711 153 UNI2-AS, ES 7545 6139 838 617 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4783 317 680 CABLEONE, US 18403 4583 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4466 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 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 12628 12513 CHINAMOBILE-CN China Mobile Communications Grou 8151 12325 11745 UNINET, MX 12479 7565 7412 UNI2-AS, ES 7545 6139 5522 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4583 4556 FPT-AS-AP FPT Telecom Company, VN 9498 4466 4155 BBIL-AP BHARTI Airtel Ltd., IN 11492 4783 4103 CABLEONE, US 7552 3942 3915 VIETEL-AS-AP Viettel Group, VN 20940 3908 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 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 /15:2128 /16:13766 /17:8162 /18:13431 /19:24438 /20:43838 /21:51629 /22:111914 /23:102721 /24:618210 /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 6544 12325 UNINET, MX 12479 6527 7565 UNI2-AS, ES 11492 3593 4783 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3440 3643 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2492 3340 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2341 13767 AMAZON-02, US 30036 2297 2639 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2194 3474 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) ---------------------------------------------- 1:2423 2:1494 3:877 4:10 5:4761 6:157 7:6 8:1543 9:2 11:172 12:1335 13:471 14:2584 15:370 16:286 17:379 18:898 20:563 21:4 22:188 23:7745 24:2653 25:2 27:2796 29:19 31:3375 32:35 33:1 34:83 35:260 36:4229 37:4570 38:9528 39:967 40:258 41:4276 42:2054 43:2736 44:377 45:18711 46:5114 47:338 49:1886 50:2043 51:592 52:1550 54:323 55:1108 56:11 57:271 58:2219 59:1293 60:1175 61:2920 62:3007 63:1780 64:5569 65:2147 66:4754 67:3093 68:1072 69:3879 70:1039 71:625 72:2853 74:2802 75:1505 76:606 77:2773 78:1892 79:1736 80:2209 81:2061 82:3227 83:1431 84:1918 85:3445 86:1116 87:2137 88:1309 89:4440 90:774 91:8422 92:2746 93:2957 94:4120 95:4430 96:1449 97:310 98:958 99:698 100:71 101:1469 102:3909 103:32882 104:5261 105:760 106:874 107:2654 108:1261 109:4184 110:2244 111:3479 112:2422 113:1861 114:1973 115:2185 116:2091 117:2690 118:2978 119:1914 120:2185 121:1326 122:2794 123:2238 124:1704 125:2923 126:91 128:1574 129:965 130:1291 131:2044 132:776 133:450 134:1594 135:356 136:1464 137:1130 138:2822 139:1599 140:1624 141:1532 142:1921 143:1957 144:1181 145:575 146:2174 147:2104 148:2708 149:2978 150:1292 151:2331 152:2096 153:526 154:7600 155:1880 156:3068 157:1951 158:1373 159:2523 160:3591 161:1902 162:3881 163:2253 164:1881 165:2460 166:1536 167:2038 168:3874 169:775 170:5212 171:996 172:4230 173:3402 174:910 175:1324 176:3733 177:4705 178:3983 179:2344 180:2730 181:4149 182:3591 183:2367 184:2060 185:21585 186:5214 187:4631 188:4276 189:4333 190:9510 191:1508 192:11313 193:9481 194:7785 195:5600 196:3281 197:3182 198:6097 199:8603 200:8074 201:6369 202:10377 203:10660 204:4582 205:3637 206:4505 207:3515 208:4276 209:5106 210:4656 211:2643 212:4589 213:3828 214:1036 215:50 216:6783 217:3276 218:1421 219:398 220:2148 221:1208 222:741 223:2794 End of report