IPv4 R&E Routing Table Report 23:05 GMT Wed 30 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: 990122 Prefixes after maximum aggregation (per Origin AS): 383581 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 488231 Number of IPv4 prefixes with a valid ROA: 557836 Number of IPv4 prefixes with an invalid ROA: 648 Number of IPv4 prefixes with no ROA: 431638 Total ASes present in the Internet Routing Table: 76994 Prefixes per ASN: 12.86 Origin-only ASes present in the Internet Routing Table: 65964 Origin ASes announcing only one prefix: 26925 Transit ASes present in the Internet Routing Table: 11030 Transit-only ASes present in the Internet Routing Table: 556 Paths with bogon ASNs present in the IPv4 Routing Table: 34 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 52 Max AS path prepend of ASN ( 37447) 36 Prefixes from unregistered ASNs in the Routing Table: 1186 Number of instances of unregistered ASNs: 1226 Number of 32-bit ASNs allocated by the RIRs: 46974 Number of 32-bit ASNs visible in the Routing Table: 38641 Prefixes from 32-bit ASNs in the Routing Table: 206787 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: 452 Number of addresses announced to Internet: 3107079936 Equivalent to 185 /8s, 50 /16s and 71 /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: 322557 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 263400 Total APNIC prefixes after maximum aggregation: 77947 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 254563 Unique aggregates announced from the APNIC address blocks: 105094 APNIC Region origin ASes present in the Internet Routing Table: 14692 APNIC Prefixes per ASN: 17.33 APNIC Region origin ASes announcing only one prefix: 4469 APNIC Region transit ASes present in the Internet Routing Table: 1993 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: 10256 Number of APNIC addresses announced to Internet: 749275136 Equivalent to 44 /8s, 169 /16s and 8 /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: 290300 Total ARIN prefixes after maximum aggregation: 131898 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291726 Unique aggregates announced from the ARIN address blocks: 141402 ARIN Region origin ASes present in the Internet Routing Table: 19206 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7038 ARIN Region transit ASes present in the Internet Routing Table: 1920 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: 5252 Number of ARIN addresses announced to Internet: 1348981760 Equivalent to 80 /8s, 103 /16s and 212 /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: 276027 Total RIPE prefixes after maximum aggregation: 136301 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 275018 Unique aggregates announced from the RIPE address blocks: 178127 RIPE Region origin ASes present in the Internet Routing Table: 28963 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12064 RIPE Region transit ASes present in the Internet Routing Table: 4024 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 32 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12594 Number of RIPE addresses announced to Internet: 732303872 Equivalent to 43 /8s, 166 /16s and 18 /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: 124540 Total LACNIC prefixes after maximum aggregation: 29868 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120900 Unique aggregates announced from the LACNIC address blocks: 49148 LACNIC Region origin ASes present in the Internet Routing Table: 11265 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2650 LACNIC Region transit ASes present in the Internet Routing Table: 2507 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: 9232 Number of LACNIC addresses announced to Internet: 171200256 Equivalent to 10 /8s, 52 /16s and 79 /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: 34669 Total AfriNIC prefixes after maximum aggregation: 6805 AfriNIC Deaggregation factor: 5.09 Prefixes being announced from the AfriNIC address blocks: 47463 Unique aggregates announced from the AfriNIC address blocks: 14081 AfriNIC Region origin ASes present in the Internet Routing Table: 1942 AfriNIC Prefixes per ASN: 24.44 AfriNIC Region origin ASes announcing only one prefix: 704 AfriNIC Region transit ASes present in the Internet Routing Table: 377 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: 1307 Number of AfriNIC addresses announced to Internet: 105068032 Equivalent to 6 /8s, 67 /16s and 54 /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 12347 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6138 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4536 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3900 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3682 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3291 1869 101 VNPT-AS-VN VNPT Corp, VN 24560 2914 864 510 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2892 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 13665 40975 5280 AMAZON-02, US 11492 4821 319 607 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3506 8770 858 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 2927 1237 2182 AKAMAI-AS, US 4155 2890 219 1738 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 7585 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3907 3395 123 AKAMAI-ASN1, NL 9009 3825 363 2139 M247, RO 12389 3115 2315 869 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2324 165 1691 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 12317 3276 576 UNINET, MX 10620 3479 473 1035 Telmex Colombia S.A., CO 13999 2522 511 354 Mega Cable, S.A. de C.V., MX 11830 1986 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 1189 371 22 Telefonica del Peru S.A.A., PE 11664 1072 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1069 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1019 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 1717 660 28 RAYA-AS, EG 29571 1604 102 51 ORANGE-COTE-IVOIRE, CI 36992 1351 1490 355 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1231 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 899 520 43 Vodafone-, EG 36914 575 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 13665 40975 5280 AMAZON-02, US 9808 12347 8762 116 CHINAMOBILE-CN China Mobile Communication 8151 12317 3276 576 UNINET, MX 12479 7585 1712 148 UNI2-AS, ES 7545 6138 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4821 319 607 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4536 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3907 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 12347 12231 CHINAMOBILE-CN China Mobile Communications Grou 8151 12317 11741 UNINET, MX 12479 7585 7437 UNI2-AS, ES 7545 6138 5515 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4536 4509 FPT-AS-AP FPT Telecom Company, VN 11492 4821 4214 CABLEONE, US 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 7552 3900 3873 VIETEL-AS-AP Viettel Group, VN 20940 3907 3784 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 /15:2129 /16:13749 /17:8165 /18:13424 /19:24440 /20:43852 /21:51545 /22:111733 /23:102525 /24:616323 /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 6536 7585 UNI2-AS, ES 8151 6534 12317 UNINET, MX 11492 3613 4821 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 2357 13665 AMAZON-02, US 30036 2288 2629 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3479 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) ---------------------------------------------- 1:2422 2:1490 3:849 4:10 5:4745 6:163 7:6 8:1553 9:2 11:172 12:1340 13:456 14:2574 15:367 16:286 17:377 18:899 20:561 21:4 22:188 23:7713 24:2676 25:2 27:2785 29:19 31:3348 32:35 33:1 34:83 35:258 36:4051 37:4552 38:9487 39:945 40:247 41:4248 42:2015 43:2734 44:373 45:18702 46:5085 47:336 49:1899 50:2007 51:591 52:1554 54:325 55:1098 56:11 57:271 58:2208 59:1301 60:1171 61:2823 62:2983 63:1784 64:5523 65:2148 66:4727 67:3097 68:1071 69:3875 70:1038 71:621 72:2844 74:2789 75:1503 76:608 77:2771 78:1896 79:1702 80:2200 81:2052 82:3174 83:1437 84:1888 85:3476 86:1090 87:2120 88:1306 89:4425 90:777 91:8416 92:2717 93:2948 94:4062 95:4399 96:1446 97:309 98:955 99:694 100:71 101:1449 102:3906 103:32873 104:5239 105:805 106:971 107:2660 108:1258 109:4180 110:2242 111:3374 112:2343 113:1853 114:1961 115:2196 116:2088 117:2639 118:2981 119:1938 120:2186 121:1326 122:2787 123:2233 124:1705 125:2903 126:91 128:1578 129:963 130:1294 131:2046 132:775 133:450 134:1595 135:351 136:1459 137:1131 138:2835 139:1586 140:1625 141:1516 142:1909 143:1960 144:1171 145:565 146:2175 147:2094 148:2725 149:2940 150:1293 151:2252 152:2069 153:524 154:7596 155:1853 156:3081 157:1958 158:1357 159:2513 160:3605 161:1891 162:3861 163:2241 164:1880 165:2415 166:1536 167:2005 168:3962 169:779 170:5131 171:994 172:4232 173:3389 174:917 175:1329 176:3732 177:4768 178:3937 179:2320 180:2726 181:4135 182:3534 183:2313 184:2062 185:21576 186:5249 187:4668 188:4268 189:4372 190:9569 191:1502 192:11296 193:9469 194:7775 195:5584 196:3277 197:3197 198:6083 199:8607 200:8138 201:6383 202:10385 203:10642 204:4633 205:3570 206:4446 207:3513 208:4262 209:5126 210:4635 211:2603 212:4544 213:3800 214:1027 215:48 216:6748 217:3233 218:1376 219:397 220:2150 221:1205 222:738 223:2749 End of report