IPv4 R&E Routing Table Report 23:05 GMT Thu 19 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: 983134 Prefixes after maximum aggregation (per Origin AS): 380005 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 482480 Number of IPv4 prefixes with a valid ROA: 548272 Number of IPv4 prefixes with an invalid ROA: 967 Number of IPv4 prefixes with no ROA: 433895 Total ASes present in the Internet Routing Table: 76776 Prefixes per ASN: 12.81 Origin-only ASes present in the Internet Routing Table: 65804 Origin ASes announcing only one prefix: 26852 Transit ASes present in the Internet Routing Table: 10972 Transit-only ASes present in the Internet Routing Table: 538 Paths with bogon ASNs present in the IPv4 Routing Table: 36 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: 1182 Number of instances of unregistered ASNs: 1219 Number of 32-bit ASNs allocated by the RIRs: 46680 Number of 32-bit ASNs visible in the Routing Table: 38337 Prefixes from 32-bit ASNs in the Routing Table: 204462 Number of bogon 32-bit ASNs visible in the Routing Table: 100 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 444 Number of addresses announced to Internet: 3105699840 Equivalent to 185 /8s, 29 /16s and 56 /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: 321399 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 259648 Total APNIC prefixes after maximum aggregation: 77276 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 250912 Unique aggregates announced from the APNIC address blocks: 104372 APNIC Region origin ASes present in the Internet Routing Table: 14596 APNIC Prefixes per ASN: 17.19 APNIC Region origin ASes announcing only one prefix: 4419 APNIC Region transit ASes present in the Internet Routing Table: 1966 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: 10138 Number of APNIC addresses announced to Internet: 748658944 Equivalent to 44 /8s, 159 /16s and 161 /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: 288719 Total ARIN prefixes after maximum aggregation: 130974 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 290556 Unique aggregates announced from the ARIN address blocks: 139554 ARIN Region origin ASes present in the Internet Routing Table: 19200 ARIN Prefixes per ASN: 15.13 ARIN Region origin ASes announcing only one prefix: 7032 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: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5229 Number of ARIN addresses announced to Internet: 1349494528 Equivalent to 80 /8s, 111 /16s and 167 /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: 274515 Total RIPE prefixes after maximum aggregation: 134803 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 273270 Unique aggregates announced from the RIPE address blocks: 175691 RIPE Region origin ASes present in the Internet Routing Table: 28902 RIPE Prefixes per ASN: 9.46 RIPE Region origin ASes announcing only one prefix: 12060 RIPE Region transit ASes present in the Internet Routing Table: 3996 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: 12481 Number of RIPE addresses announced to Internet: 731107840 Equivalent to 43 /8s, 147 /16s and 210 /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: 123834 Total LACNIC prefixes after maximum aggregation: 29572 LACNIC Deaggregation factor: 4.19 Prefixes being announced from the LACNIC address blocks: 120377 Unique aggregates announced from the LACNIC address blocks: 48898 LACNIC Region origin ASes present in the Internet Routing Table: 11258 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2651 LACNIC Region transit ASes present in the Internet Routing Table: 2510 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: 9208 Number of LACNIC addresses announced to Internet: 171278080 Equivalent to 10 /8s, 53 /16s and 127 /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: 35236 Total AfriNIC prefixes after maximum aggregation: 6621 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 47575 Unique aggregates announced from the AfriNIC address blocks: 13566 AfriNIC Region origin ASes present in the Internet Routing Table: 1915 AfriNIC Prefixes per ASN: 24.84 AfriNIC Region origin ASes announcing only one prefix: 690 AfriNIC Region transit ASes present in the Internet Routing Table: 373 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: 1281 Number of AfriNIC addresses announced to Internet: 104950784 Equivalent to 6 /8s, 65 /16s and 108 /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 11227 8759 105 CHINAMOBILE-CN China Mobile Communication 7545 6194 847 648 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4457 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4431 534 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3277 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2890 856 534 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2195 812 179 CMNET-JIANGSU-AP China Mobile communicati 4755 2181 434 194 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 13631 40934 5229 AMAZON-02, US 11492 4780 317 603 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3635 1320 81 SHAW, CA 174 3584 8744 868 COGENT-174, US 22773 3349 3033 168 ASN-CXA-ALL-CCI-22773-RDC, US 749 3227 54767 2478 DNIC-AS-00749, US 396982 3192 3854 428 GOOGLE-CLOUD-PLATFORM, US 16625 3000 1256 2221 AKAMAI-AS, US 36352 2816 230 846 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 7672 1713 148 UNI2-AS, ES 39891 4780 291 66 ALJAWWALSTC-AS, SA 20940 3939 3395 123 AKAMAI-ASN1, NL 9009 3881 353 2089 M247, RO 12389 3106 2304 885 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 575 TELLCOM-AS, TR 212238 2320 170 1702 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1559 1852 14 TE-AS TE-AS, EG 8551 1416 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 12207 3256 574 UNINET, MX 10620 3502 481 1019 Telmex Colombia S.A., CO 13999 2536 537 353 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1371 2436 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1340 787 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1208 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1200 371 22 Telefonica del Peru S.A.A., PE 22884 1060 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 1623 389 16 LINKdotNET-AS, EG 29571 1607 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 1077 523 47 Vodafone-, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36914 566 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 13631 40934 5229 AMAZON-02, US 8151 12207 3256 574 UNINET, MX 9808 11227 8759 105 CHINAMOBILE-CN China Mobile Communication 12479 7672 1713 148 UNI2-AS, ES 7545 6194 847 648 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4780 317 603 CABLEONE, US 39891 4780 291 66 ALJAWWALSTC-AS, SA 18403 4457 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4431 534 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3939 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 12207 11633 UNINET, MX 9808 11227 11122 CHINAMOBILE-CN China Mobile Communications Grou 12479 7672 7524 UNI2-AS, ES 7545 6194 5546 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 4714 ALJAWWALSTC-AS, SA 18403 4457 4431 FPT-AS-AP FPT Telecom Company, VN 11492 4780 4177 CABLEONE, US 9498 4431 4120 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3892 VIETEL-AS-AP Viettel Group, VN 20940 3939 3816 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 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: 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 /15:2128 /16:13807 /17:8190 /18:13441 /19:24404 /20:43836 /21:51450 /22:111700 /23:102219 /24:609716 /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 6594 7672 UNI2-AS, ES 8151 6423 12207 UNINET, MX 11492 3576 4780 CABLEONE, US 39891 3489 4780 ALJAWWALSTC-AS, SA 6327 3431 3635 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2499 3349 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2359 13631 AMAZON-02, US 30036 2253 2594 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2189 3502 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 2:1495 3:820 4:10 5:4761 6:162 7:6 8:1570 9:1 11:172 12:1347 13:452 14:2519 15:360 16:286 17:377 18:922 20:547 21:4 22:188 23:7566 24:2839 25:2 27:2765 29:19 31:3294 32:35 33:1 34:83 35:253 36:3158 37:4572 38:9401 39:906 40:174 41:4261 42:1971 43:2653 44:378 45:18652 46:5081 47:319 49:1946 50:1881 51:592 52:1565 54:319 55:1081 56:11 57:268 58:2209 59:1289 60:1172 61:2832 62:2932 63:1794 64:5459 65:2178 66:4623 67:3063 68:1118 69:3838 70:1070 71:622 72:2854 74:2786 75:1505 76:616 77:2724 78:1880 79:1715 80:2206 81:2056 82:3145 83:1440 84:1859 85:3453 86:1089 87:2108 88:1303 89:4414 90:770 91:8408 92:2730 93:2911 94:4018 95:4342 96:1428 97:311 98:981 99:687 100:72 101:1426 102:3854 103:32803 104:5156 105:765 106:1043 107:2663 108:1238 109:4096 110:2240 111:3282 112:2124 113:1816 114:1992 115:2159 116:2082 117:2536 118:2893 119:1917 120:2056 121:1371 122:2779 123:2192 124:1634 125:2910 126:91 128:1574 129:946 130:1291 131:2005 132:769 133:451 134:1547 135:346 136:1345 137:1118 138:2851 139:1581 140:1602 141:1501 142:1898 143:1844 144:1185 145:545 146:2175 147:2111 148:2699 149:2905 150:1279 151:1971 152:2082 153:523 154:7346 155:1751 156:2840 157:1922 158:1319 159:2493 160:3597 161:1845 162:3851 163:2217 164:1854 165:1993 166:1491 167:1974 168:3975 169:785 170:5140 171:1008 172:4450 173:3333 174:918 175:1305 176:3708 177:4723 178:3735 179:2316 180:2752 181:4077 182:3454 183:2207 184:2065 185:21521 186:5173 187:4559 188:4264 189:4310 190:9572 191:1491 192:11279 193:9466 194:7809 195:5535 196:3286 197:3248 198:6063 199:8507 200:8069 201:6380 202:10282 203:10673 204:4544 205:3611 206:4444 207:3468 208:4265 209:5117 210:4570 211:2535 212:4576 213:3735 214:1028 215:48 216:6750 217:3183 218:1354 219:393 220:2083 221:1145 222:723 223:2509 End of report