IPv4 R&E Routing Table Report 23:05 GMT Mon 28 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: 989457 Prefixes after maximum aggregation (per Origin AS): 383383 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487903 Number of IPv4 prefixes with a valid ROA: 557326 Number of IPv4 prefixes with an invalid ROA: 648 Number of IPv4 prefixes with no ROA: 431483 Total ASes present in the Internet Routing Table: 76965 Prefixes per ASN: 12.86 Origin-only ASes present in the Internet Routing Table: 65928 Origin ASes announcing only one prefix: 26934 Transit ASes present in the Internet Routing Table: 11037 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 31 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1157 Number of instances of unregistered ASNs: 1194 Number of 32-bit ASNs allocated by the RIRs: 46959 Number of 32-bit ASNs visible in the Routing Table: 38612 Prefixes from 32-bit ASNs in the Routing Table: 206902 Number of bogon 32-bit ASNs visible in the Routing Table: 90 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 452 Number of addresses announced to Internet: 3107043840 Equivalent to 185 /8s, 49 /16s and 186 /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: 322519 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262954 Total APNIC prefixes after maximum aggregation: 77902 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 254105 Unique aggregates announced from the APNIC address blocks: 105051 APNIC Region origin ASes present in the Internet Routing Table: 14682 APNIC Prefixes per ASN: 17.31 APNIC Region origin ASes announcing only one prefix: 4461 APNIC Region transit ASes present in the Internet Routing Table: 1986 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: 10245 Number of APNIC addresses announced to Internet: 749241088 Equivalent to 44 /8s, 168 /16s and 131 /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: 290210 Total ARIN prefixes after maximum aggregation: 131856 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291730 Unique aggregates announced from the ARIN address blocks: 141287 ARIN Region origin ASes present in the Internet Routing Table: 19211 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7043 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: 5253 Number of ARIN addresses announced to Internet: 1349223680 Equivalent to 80 /8s, 107 /16s and 133 /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: 275920 Total RIPE prefixes after maximum aggregation: 136231 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274875 Unique aggregates announced from the RIPE address blocks: 178027 RIPE Region origin ASes present in the Internet Routing Table: 28950 RIPE Prefixes per ASN: 9.49 RIPE Region origin ASes announcing only one prefix: 12064 RIPE Region transit ASes present in the Internet Routing Table: 4019 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 37 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12580 Number of RIPE addresses announced to Internet: 732165888 Equivalent to 43 /8s, 163 /16s and 247 /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: 124673 Total LACNIC prefixes after maximum aggregation: 29828 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 120967 Unique aggregates announced from the LACNIC address blocks: 49100 LACNIC Region origin ASes present in the Internet Routing Table: 11266 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2664 LACNIC Region transit ASes present in the Internet Routing Table: 2519 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: 9231 Number of LACNIC addresses announced to Internet: 171136000 Equivalent to 10 /8s, 51 /16s and 84 /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: 34543 Total AfriNIC prefixes after maximum aggregation: 6804 AfriNIC Deaggregation factor: 5.08 Prefixes being announced from the AfriNIC address blocks: 47328 Unique aggregates announced from the AfriNIC address blocks: 14061 AfriNIC Region origin ASes present in the Internet Routing Table: 1939 AfriNIC Prefixes per ASN: 24.41 AfriNIC Region origin ASes announcing only one prefix: 702 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1303 Number of AfriNIC addresses announced to Internet: 105026560 Equivalent to 6 /8s, 66 /16s and 148 /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 12064 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6136 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4533 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3910 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3685 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3292 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2911 864 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2818 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2179 427 185 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 13655 40971 5264 AMAZON-02, US 11492 4819 319 605 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3517 8771 859 COGENT-174, US 22773 3342 3030 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3223 54766 2474 DNIC-AS-00749, US 396982 3198 3856 434 GOOGLE-CLOUD-PLATFORM, US 16625 2927 1237 2184 AKAMAI-AS, US 4155 2880 218 1729 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 7589 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3915 3395 123 AKAMAI-ASN1, NL 9009 3827 363 2143 M247, RO 12389 3115 2315 869 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2317 164 1685 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1579 1852 14 TE-AS TE-AS, EG 203020 1523 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 12319 3260 575 UNINET, MX 10620 3483 474 1028 Telmex Colombia S.A., CO 13999 2525 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1371 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 1073 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1067 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 1709 660 28 RAYA-AS, EG 29571 1605 102 51 ORANGE-COTE-IVOIRE, CI 36992 1317 1490 359 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1225 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 866 520 43 Vodafone-, EG 36914 580 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 532 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 13655 40971 5264 AMAZON-02, US 8151 12319 3260 575 UNINET, MX 9808 12064 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7589 1712 148 UNI2-AS, ES 7545 6136 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4819 319 605 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4533 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3915 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 9808 12064 11948 CHINAMOBILE-CN China Mobile Communications Grou 8151 12319 11744 UNINET, MX 12479 7589 7441 UNI2-AS, ES 7545 6136 5513 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4533 4506 FPT-AS-AP FPT Telecom Company, VN 11492 4819 4214 CABLEONE, US 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 7552 3910 3883 VIETEL-AS-AP Viettel Group, VN 20940 3915 3792 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 /13:577 /14:1199 /15:2128 /16:13750 /17:8163 /18:13424 /19:24417 /20:43791 /21:51493 /22:111640 /23:102478 /24:615936 /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 6539 7589 UNI2-AS, ES 8151 6537 12319 UNINET, MX 11492 3611 4819 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2493 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2336 13655 AMAZON-02, US 30036 2284 2625 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3483 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) ---------------------------------------------- 1:2418 2:1492 3:852 4:10 5:4751 6:163 7:6 8:1549 9:2 11:172 12:1340 13:464 14:2574 15:367 16:286 17:375 18:896 20:560 21:4 22:188 23:7713 24:2674 25:2 27:2789 29:19 31:3343 32:35 33:1 34:83 35:257 36:3851 37:4547 38:9496 39:941 40:247 41:4254 42:2016 43:2729 44:374 45:18700 46:5083 47:336 49:1885 50:2008 51:591 52:1554 54:325 55:1112 56:11 57:272 58:2208 59:1301 60:1171 61:2826 62:2982 63:1783 64:5537 65:2156 66:4720 67:3098 68:1070 69:3876 70:1040 71:621 72:2854 74:2793 75:1503 76:605 77:2772 78:1898 79:1693 80:2201 81:2052 82:3171 83:1437 84:1883 85:3476 86:1087 87:2124 88:1308 89:4430 90:776 91:8409 92:2704 93:2949 94:4068 95:4398 96:1450 97:310 98:954 99:690 100:71 101:1444 102:3897 103:32835 104:5240 105:803 106:972 107:2655 108:1260 109:4177 110:2244 111:3340 112:2282 113:1853 114:1963 115:2198 116:2087 117:2621 118:2981 119:1924 120:2173 121:1325 122:2786 123:2232 124:1705 125:2895 126:91 128:1581 129:965 130:1293 131:2044 132:773 133:450 134:1587 135:351 136:1460 137:1127 138:2824 139:1587 140:1630 141:1515 142:1909 143:1952 144:1174 145:565 146:2174 147:2096 148:2723 149:2934 150:1294 151:2242 152:2065 153:524 154:7586 155:1843 156:3077 157:1957 158:1352 159:2523 160:3601 161:1888 162:3874 163:2244 164:1877 165:2386 166:1534 167:2015 168:3970 169:775 170:5121 171:999 172:4229 173:3395 174:918 175:1328 176:3733 177:4822 178:3933 179:2317 180:2728 181:4126 182:3527 183:2300 184:2062 185:21580 186:5264 187:4688 188:4265 189:4360 190:9548 191:1517 192:11298 193:9472 194:7768 195:5580 196:3244 197:3199 198:6074 199:8604 200:8186 201:6396 202:10389 203:10652 204:4634 205:3606 206:4480 207:3507 208:4254 209:5125 210:4640 211:2604 212:4538 213:3806 214:1024 215:48 216:6744 217:3228 218:1374 219:397 220:2147 221:1201 222:744 223:2717 End of report