IPv4 R&E Routing Table Report 23:05 GMT Sat 19 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: 987757 Prefixes after maximum aggregation (per Origin AS): 382776 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487110 Number of IPv4 prefixes with a valid ROA: 555557 Number of IPv4 prefixes with an invalid ROA: 780 Number of IPv4 prefixes with no ROA: 431420 Total ASes present in the Internet Routing Table: 76932 Prefixes per ASN: 12.84 Origin-only ASes present in the Internet Routing Table: 65917 Origin ASes announcing only one prefix: 26915 Transit ASes present in the Internet Routing Table: 11015 Transit-only ASes present in the Internet Routing Table: 548 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: 63 Max AS path prepend of ASN ( 37447) 57 Prefixes from unregistered ASNs in the Routing Table: 1164 Number of instances of unregistered ASNs: 1204 Number of 32-bit ASNs allocated by the RIRs: 46890 Number of 32-bit ASNs visible in the Routing Table: 38557 Prefixes from 32-bit ASNs in the Routing Table: 206085 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: 439 Number of addresses announced to Internet: 3106944768 Equivalent to 185 /8s, 48 /16s and 55 /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: 322058 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262235 Total APNIC prefixes after maximum aggregation: 77783 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 253128 Unique aggregates announced from the APNIC address blocks: 105020 APNIC Region origin ASes present in the Internet Routing Table: 14689 APNIC Prefixes per ASN: 17.23 APNIC Region origin ASes announcing only one prefix: 4479 APNIC Region transit ASes present in the Internet Routing Table: 1982 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: 10248 Number of APNIC addresses announced to Internet: 749207040 Equivalent to 44 /8s, 167 /16s and 254 /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: 289805 Total ARIN prefixes after maximum aggregation: 131752 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291516 Unique aggregates announced from the ARIN address blocks: 141122 ARIN Region origin ASes present in the Internet Routing Table: 19200 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7041 ARIN Region transit ASes present in the Internet Routing Table: 1931 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: 5248 Number of ARIN addresses announced to Internet: 1349264640 Equivalent to 80 /8s, 108 /16s and 37 /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: 275819 Total RIPE prefixes after maximum aggregation: 135965 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274845 Unique aggregates announced from the RIPE address blocks: 177440 RIPE Region origin ASes present in the Internet Routing Table: 28948 RIPE Prefixes per ASN: 9.49 RIPE Region origin ASes announcing only one prefix: 12055 RIPE Region transit ASes present in the Internet Routing Table: 4006 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: 12554 Number of RIPE addresses announced to Internet: 732203776 Equivalent to 43 /8s, 164 /16s and 139 /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: 124283 Total LACNIC prefixes after maximum aggregation: 29790 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120624 Unique aggregates announced from the LACNIC address blocks: 49159 LACNIC Region origin ASes present in the Internet Routing Table: 11254 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2650 LACNIC Region transit ASes present in the Internet Routing Table: 2528 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: 9219 Number of LACNIC addresses announced to Internet: 171067648 Equivalent to 10 /8s, 50 /16s and 73 /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: 34451 Total AfriNIC prefixes after maximum aggregation: 6730 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 47205 Unique aggregates announced from the AfriNIC address blocks: 13998 AfriNIC Region origin ASes present in the Internet Routing Table: 1922 AfriNIC Prefixes per ASN: 24.56 AfriNIC Region origin ASes announcing only one prefix: 690 AfriNIC Region transit ASes present in the Internet Routing Table: 374 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: 1288 Number of AfriNIC addresses announced to Internet: 104955904 Equivalent to 6 /8s, 65 /16s and 128 /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 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6158 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4484 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 3701 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3289 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2905 863 520 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2740 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2186 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 13698 40975 5285 AMAZON-02, US 11492 4810 319 622 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3497 8771 860 COGENT-174, US 22773 3341 3032 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3223 54766 2474 DNIC-AS-00749, US 396982 3196 3855 432 GOOGLE-CLOUD-PLATFORM, US 16625 2933 1239 2183 AKAMAI-AS, US 4155 2863 217 1730 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 7602 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3918 3395 123 AKAMAI-ASN1, NL 9009 3784 360 2106 M247, RO 12389 3119 2317 872 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2402 361 582 TELLCOM-AS, TR 212238 2323 164 1691 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1545 1852 14 TE-AS TE-AS, EG 203020 1475 163 648 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 12307 3255 574 UNINET, MX 10620 3513 481 1019 Telmex Colombia S.A., CO 13999 2529 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 1194 371 22 Telefonica del Peru S.A.A., PE 22884 1066 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 11664 1065 278 33 Techtel LMDS Comunicaciones Interactivas 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 1733 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36903 1249 554 96 MT-MPLS, MA 36992 1221 1482 324 ETISALAT-MISR, EG 24863 1212 389 22 LINKdotNET-AS, EG 37069 1101 1112 11 MOBINIL, EG 36935 822 520 43 Vodafone-, EG 36914 574 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 13698 40975 5285 AMAZON-02, US 8151 12307 3255 574 UNINET, MX 9808 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7602 1712 148 UNI2-AS, ES 7545 6158 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4810 319 622 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4484 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 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 12307 11733 UNINET, MX 9808 11823 11707 CHINAMOBILE-CN China Mobile Communications Grou 12479 7602 7454 UNI2-AS, ES 7545 6158 5537 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4484 4458 FPT-AS-AP FPT Telecom Company, VN 11492 4810 4188 CABLEONE, US 9498 4461 4150 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3891 VIETEL-AS-AP Viettel Group, VN 20940 3918 3795 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 /13:578 /14:1200 /15:2126 /16:13747 /17:8158 /18:13414 /19:24412 /20:43841 /21:51516 /22:111509 /23:102409 /24:614386 /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 6544 7602 UNI2-AS, ES 8151 6527 12307 UNINET, MX 11492 3604 4810 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2493 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2353 13698 AMAZON-02, US 30036 2270 2611 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) ---------------------------------------------- 1:2415 2:1493 3:854 4:10 5:4761 6:163 7:6 8:1551 9:1 11:172 12:1335 13:459 14:2561 15:365 16:286 17:379 18:896 20:558 21:4 22:188 23:7686 24:2672 25:2 27:2805 29:19 31:3343 32:35 33:1 34:83 35:257 36:3641 37:4558 38:9437 39:911 40:253 41:4211 42:1974 43:2722 44:368 45:18675 46:5090 47:336 49:1875 50:1944 51:591 52:1554 54:327 55:1113 56:11 57:271 58:2208 59:1296 60:1174 61:2830 62:2963 63:1792 64:5523 65:2164 66:4693 67:3089 68:1085 69:3872 70:1042 71:622 72:2849 74:2771 75:1503 76:602 77:2758 78:1900 79:1693 80:2198 81:2048 82:3179 83:1439 84:1880 85:3457 86:1087 87:2123 88:1312 89:4425 90:778 91:8410 92:2698 93:2943 94:4067 95:4397 96:1445 97:310 98:955 99:696 100:71 101:1436 102:3889 103:32840 104:5211 105:768 106:970 107:2639 108:1254 109:4165 110:2246 111:3310 112:2235 113:1851 114:1955 115:2211 116:2078 117:2582 118:2977 119:1918 120:2156 121:1322 122:2784 123:2228 124:1691 125:2904 126:91 128:1579 129:961 130:1291 131:2032 132:765 133:450 134:1639 135:350 136:1450 137:1121 138:2809 139:1582 140:1633 141:1514 142:1905 143:1990 144:1194 145:562 146:2163 147:2100 148:2709 149:2936 150:1244 151:2230 152:2066 153:525 154:7572 155:1850 156:3084 157:1957 158:1348 159:2507 160:3632 161:1888 162:3858 163:2245 164:1846 165:2347 166:1521 167:2021 168:3978 169:780 170:5124 171:1006 172:4227 173:3388 174:918 175:1327 176:3724 177:4711 178:3927 179:2306 180:2726 181:4133 182:3503 183:2270 184:2063 185:21569 186:5216 187:4657 188:4274 189:4323 190:9556 191:1497 192:11309 193:9467 194:7767 195:5579 196:3291 197:3206 198:6076 199:8593 200:8085 201:6384 202:10374 203:10640 204:4644 205:3593 206:4472 207:3509 208:4264 209:5125 210:4535 211:2590 212:4548 213:3821 214:1022 215:46 216:6755 217:3210 218:1363 219:394 220:2144 221:1191 222:743 223:2687 End of report