IPv4 R&E Routing Table Report 23:05 GMT Wed 16 Jul, 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: 985721 Prefixes after maximum aggregation (per Origin AS): 382753 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 486948 Number of IPv4 prefixes with a valid ROA: 554829 Number of IPv4 prefixes with an invalid ROA: 670 Number of IPv4 prefixes with no ROA: 430222 Total ASes present in the Internet Routing Table: 76898 Prefixes per ASN: 12.82 Origin-only ASes present in the Internet Routing Table: 65887 Origin ASes announcing only one prefix: 26903 Transit ASes present in the Internet Routing Table: 11011 Transit-only ASes present in the Internet Routing Table: 549 Paths with bogon ASNs present in the IPv4 Routing Table: 34 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 71 Max AS path prepend of ASN ( 63293) 64 Prefixes from unregistered ASNs in the Routing Table: 1153 Number of instances of unregistered ASNs: 1193 Number of 32-bit ASNs allocated by the RIRs: 46838 Number of 32-bit ASNs visible in the Routing Table: 38532 Prefixes from 32-bit ASNs in the Routing Table: 205885 Number of bogon 32-bit ASNs visible in the Routing Table: 96 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 463 Number of addresses announced to Internet: 3106073344 Equivalent to 185 /8s, 34 /16s and 235 /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: 321734 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 261962 Total APNIC prefixes after maximum aggregation: 77795 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 252895 Unique aggregates announced from the APNIC address blocks: 105215 APNIC Region origin ASes present in the Internet Routing Table: 14674 APNIC Prefixes per ASN: 17.23 APNIC Region origin ASes announcing only one prefix: 4474 APNIC Region transit ASes present in the Internet Routing Table: 1976 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: 10229 Number of APNIC addresses announced to Internet: 748995584 Equivalent to 44 /8s, 164 /16s and 196 /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: 289519 Total ARIN prefixes after maximum aggregation: 131769 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291319 Unique aggregates announced from the ARIN address blocks: 140909 ARIN Region origin ASes present in the Internet Routing Table: 19183 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7031 ARIN Region transit ASes present in the Internet Routing Table: 1926 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 71 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5240 Number of ARIN addresses announced to Internet: 1349150464 Equivalent to 80 /8s, 106 /16s and 103 /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: 275932 Total RIPE prefixes after maximum aggregation: 135842 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274861 Unique aggregates announced from the RIPE address blocks: 177261 RIPE Region origin ASes present in the Internet Routing Table: 28932 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12050 RIPE Region transit ASes present in the Internet Routing Table: 4003 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12544 Number of RIPE addresses announced to Internet: 731924480 Equivalent to 43 /8s, 160 /16s and 72 /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: 123932 Total LACNIC prefixes after maximum aggregation: 29837 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 120267 Unique aggregates announced from the LACNIC address blocks: 49154 LACNIC Region origin ASes present in the Internet Routing Table: 11271 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2655 LACNIC Region transit ASes present in the Internet Routing Table: 2533 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: 9228 Number of LACNIC addresses announced to Internet: 171035904 Equivalent to 10 /8s, 49 /16s and 205 /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: 33223 Total AfriNIC prefixes after maximum aggregation: 6743 AfriNIC Deaggregation factor: 4.93 Prefixes being announced from the AfriNIC address blocks: 45916 Unique aggregates announced from the AfriNIC address blocks: 13990 AfriNIC Region origin ASes present in the Internet Routing Table: 1924 AfriNIC Prefixes per ASN: 23.86 AfriNIC Region origin ASes announcing only one prefix: 693 AfriNIC Region transit ASes present in the Internet Routing Table: 376 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1291 Number of AfriNIC addresses announced to Internet: 104645376 Equivalent to 6 /8s, 60 /16s and 195 /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 11818 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6150 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4478 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4461 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3699 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3288 1869 101 VNPT-AS-VN VNPT Corp, VN 24560 2902 862 519 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2740 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2189 434 193 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 13617 40957 5262 AMAZON-02, US 11492 4812 319 611 CABLEONE, US 7155 3856 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3523 8770 856 COGENT-174, US 22773 3342 3032 167 ASN-CXA-ALL-CCI-22773-RDC, US 749 3224 54766 2475 DNIC-AS-00749, US 396982 3195 3854 431 GOOGLE-CLOUD-PLATFORM, US 16625 2932 1239 2185 AKAMAI-AS, US 4155 2864 217 1732 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 7624 1713 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3950 3395 123 AKAMAI-ASN1, NL 9009 3785 360 2107 M247, RO 12389 3117 2317 872 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2402 361 582 TELLCOM-AS, TR 212238 2325 165 1695 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1558 1852 14 TE-AS TE-AS, EG 203020 1475 164 649 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 12316 3255 574 UNINET, MX 10620 3513 481 1023 Telmex Colombia S.A., CO 13999 2526 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1370 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1346 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1196 371 21 Telefonica del Peru S.A.A., PE 22884 1066 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 11664 1056 278 33 Techtel LMDS Comunicaciones Interactivas 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 1645 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36903 1249 554 96 MT-MPLS, MA 36992 1210 1477 335 ETISALAT-MISR, EG 36935 822 520 43 Vodafone-, EG 37069 702 1112 11 MOBINIL, EG 24863 657 389 22 LINKdotNET-AS, EG 36914 569 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 535 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 13617 40957 5262 AMAZON-02, US 8151 12316 3255 574 UNINET, MX 9808 11818 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7624 1713 150 UNI2-AS, ES 7545 6150 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4812 319 611 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4478 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4461 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3950 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 12316 11742 UNINET, MX 9808 11818 11702 CHINAMOBILE-CN China Mobile Communications Grou 12479 7624 7474 UNI2-AS, ES 7545 6150 5529 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4478 4452 FPT-AS-AP FPT Telecom Company, VN 11492 4812 4201 CABLEONE, US 9498 4461 4150 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3891 VIETEL-AS-AP Viettel Group, VN 20940 3950 3827 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 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 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 /13:579 /14:1199 /15:2115 /16:13715 /17:8150 /18:13403 /19:24309 /20:43432 /21:51407 /22:110875 /23:102308 /24:613768 /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 6564 7624 UNI2-AS, ES 8151 6537 12316 UNINET, MX 11492 3606 4812 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2815 3856 VIASAT-SP-BACKBONE, US 22773 2493 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2335 13617 AMAZON-02, US 30036 2265 2606 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2200 3513 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) ---------------------------------------------- 1:2407 2:1496 3:847 4:10 5:4736 6:163 7:6 8:1555 9:1 11:172 12:1336 13:450 14:2556 15:365 16:286 17:382 18:889 20:556 21:4 22:188 23:7673 24:2675 25:2 27:2810 29:19 31:3338 32:35 33:1 34:83 35:256 36:3558 37:4559 38:9440 39:909 40:253 41:4147 42:1960 43:2720 44:369 45:18623 46:5099 47:337 49:1889 50:1945 51:591 52:1554 54:324 55:1104 56:11 57:270 58:2206 59:1299 60:1174 61:2829 62:2940 63:1791 64:5517 65:2161 66:4691 67:3091 68:1085 69:3873 70:1042 71:621 72:2851 74:2776 75:1503 76:607 77:2763 78:1898 79:1703 80:2196 81:2072 82:3170 83:1434 84:1885 85:3457 86:1083 87:2125 88:1311 89:4426 90:776 91:8404 92:2749 93:2942 94:4077 95:4410 96:1444 97:310 98:955 99:700 100:72 101:1435 102:3927 103:32838 104:5270 105:728 106:968 107:2636 108:1251 109:4166 110:2244 111:3286 112:2228 113:1849 114:1955 115:2213 116:2082 117:2579 118:2977 119:1938 120:2139 121:1324 122:2784 123:2231 124:1676 125:2903 126:91 128:1580 129:959 130:1286 131:2033 132:767 133:450 134:1575 135:350 136:1460 137:1130 138:2806 139:1584 140:1633 141:1520 142:1906 143:1974 144:1202 145:560 146:2171 147:2101 148:2694 149:2938 150:1245 151:2232 152:2092 153:525 154:7554 155:1832 156:3051 157:1938 158:1343 159:2505 160:3624 161:1853 162:3859 163:2247 164:1864 165:2103 166:1524 167:2017 168:3967 169:775 170:5130 171:1006 172:4413 173:3379 174:918 175:1325 176:3721 177:4709 178:3942 179:2309 180:2729 181:4097 182:3504 183:2269 184:2067 185:21571 186:5188 187:4639 188:4269 189:4320 190:9541 191:1501 192:11309 193:9469 194:7767 195:5571 196:3278 197:3149 198:6068 199:8591 200:8084 201:6383 202:10386 203:10637 204:4586 205:3595 206:4477 207:3511 208:4264 209:5109 210:4565 211:2590 212:4546 213:3809 214:1024 215:46 216:6762 217:3199 218:1362 219:394 220:2146 221:1191 222:742 223:2686 End of report