IPv4 R&E Routing Table Report 23:05 GMT Tue 20 May, 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: 981185 Prefixes after maximum aggregation (per Origin AS): 378402 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 480077 Number of IPv4 prefixes with a valid ROA: 545059 Number of IPv4 prefixes with an invalid ROA: 706 Number of IPv4 prefixes with no ROA: 435420 Total ASes present in the Internet Routing Table: 76705 Prefixes per ASN: 12.79 Origin-only ASes present in the Internet Routing Table: 65747 Origin ASes announcing only one prefix: 26886 Transit ASes present in the Internet Routing Table: 10958 Transit-only ASes present in the Internet Routing Table: 542 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 79 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1036 Number of instances of unregistered ASNs: 1053 Number of 32-bit ASNs allocated by the RIRs: 46463 Number of 32-bit ASNs visible in the Routing Table: 38189 Prefixes from 32-bit ASNs in the Routing Table: 203332 Number of bogon 32-bit ASNs visible in the Routing Table: 44 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 442 Number of addresses announced to Internet: 3109094656 Equivalent to 185 /8s, 81 /16s and 5 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 320082 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 258776 Total APNIC prefixes after maximum aggregation: 77085 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 249907 Unique aggregates announced from the APNIC address blocks: 103113 APNIC Region origin ASes present in the Internet Routing Table: 14556 APNIC Prefixes per ASN: 17.17 APNIC Region origin ASes announcing only one prefix: 4396 APNIC Region transit ASes present in the Internet Routing Table: 1963 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 35 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10097 Number of APNIC addresses announced to Internet: 748565248 Equivalent to 44 /8s, 158 /16s and 51 /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: 289282 Total ARIN prefixes after maximum aggregation: 130684 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 289752 Unique aggregates announced from the ARIN address blocks: 139283 ARIN Region origin ASes present in the Internet Routing Table: 19212 ARIN Prefixes per ASN: 15.08 ARIN Region origin ASes announcing only one prefix: 7048 ARIN Region transit ASes present in the Internet Routing Table: 1933 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5206 Number of ARIN addresses announced to Internet: 1352622592 Equivalent to 80 /8s, 159 /16s and 98 /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: 273297 Total RIPE prefixes after maximum aggregation: 133855 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 271509 Unique aggregates announced from the RIPE address blocks: 174650 RIPE Region origin ASes present in the Internet Routing Table: 28894 RIPE Prefixes per ASN: 9.40 RIPE Region origin ASes announcing only one prefix: 12064 RIPE Region transit ASes present in the Internet Routing Table: 3964 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 32 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12435 Number of RIPE addresses announced to Internet: 731284224 Equivalent to 43 /8s, 150 /16s and 131 /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: 123469 Total LACNIC prefixes after maximum aggregation: 29505 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 119888 Unique aggregates announced from the LACNIC address blocks: 48895 LACNIC Region origin ASes present in the Internet Routing Table: 11233 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2688 LACNIC Region transit ASes present in the Internet Routing Table: 2530 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 31 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9182 Number of LACNIC addresses announced to Internet: 171692544 Equivalent to 10 /8s, 59 /16s and 210 /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: 35325 Total AfriNIC prefixes after maximum aggregation: 6637 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 49687 Unique aggregates announced from the AfriNIC address blocks: 13740 AfriNIC Region origin ASes present in the Internet Routing Table: 1900 AfriNIC Prefixes per ASN: 26.15 AfriNIC Region origin ASes announcing only one prefix: 690 AfriNIC Region transit ASes present in the Internet Routing Table: 375 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 79 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1269 Number of AfriNIC addresses announced to Internet: 104717568 Equivalent to 6 /8s, 61 /16s and 221 /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 11093 8756 96 CHINAMOBILE-CN China Mobile Communication 7545 6170 842 652 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4450 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4359 534 301 BBIL-AP BHARTI Airtel Ltd., IN 7552 3910 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3693 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3270 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2865 852 534 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 45090 2208 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 4755 2173 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 13425 40826 5080 AMAZON-02, US 11492 4735 314 586 CABLEONE, US 7155 3864 286 85 VIASAT-SP-BACKBONE, US 6327 3622 1320 81 SHAW, CA 174 3475 8746 882 COGENT-174, US 22773 3346 3015 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3230 54783 2481 DNIC-AS-00749, US 396982 3165 3851 417 GOOGLE-CLOUD-PLATFORM, US 16625 3024 1263 2227 AKAMAI-AS, US 36352 2821 230 862 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 7707 1714 148 UNI2-AS, ES 39891 4780 291 65 ALJAWWALSTC-AS, SA 20940 3966 3395 123 AKAMAI-ASN1, NL 9009 3789 327 2000 M247, RO 12389 3071 2305 887 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2389 360 579 TELLCOM-AS, TR 212238 2149 151 1580 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1568 1852 14 TE-AS TE-AS, EG 62240 1421 94 736 CLOUVIDER Clouvider - Global ASN, GB 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 12131 3251 582 UNINET, MX 10620 3499 480 1018 Telmex Colombia S.A., CO 13999 2512 540 364 Mega Cable, S.A. de C.V., MX 11830 1996 369 64 Instituto Costarricense de Electricidad y 28573 1358 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1338 785 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1198 371 22 Telefonica del Peru S.A.A., PE 11664 1112 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1059 67 378 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1042 374 163 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 1778 632 28 RAYA-AS, EG 24863 1653 389 17 LINKdotNET-AS, EG 29571 1600 102 33 ORANGE-COTE-IVOIRE, CI 36992 1432 1519 280 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1036 523 46 Vodafone-, EG 20011 980 185 285 INTERNET-SOLUTIONS, ZA 36914 555 82 3 KENET-AS, KE 15399 545 57 60 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 13425 40826 5080 AMAZON-02, US 8151 12131 3251 582 UNINET, MX 9808 11093 8756 96 CHINAMOBILE-CN China Mobile Communication 12479 7707 1714 148 UNI2-AS, ES 7545 6170 842 652 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 291 65 ALJAWWALSTC-AS, SA 11492 4735 314 586 CABLEONE, US 18403 4450 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4359 534 301 BBIL-AP BHARTI Airtel Ltd., IN 20940 3966 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 12131 11549 UNINET, MX 9808 11093 10997 CHINAMOBILE-CN China Mobile Communications Grou 12479 7707 7559 UNI2-AS, ES 7545 6170 5518 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 4715 ALJAWWALSTC-AS, SA 18403 4450 4425 FPT-AS-AP FPT Telecom Company, VN 11492 4735 4149 CABLEONE, US 9498 4359 4058 BBIL-AP BHARTI Airtel Ltd., IN 7552 3910 3884 VIETEL-AS-AP Viettel Group, VN 20940 3966 3843 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 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 23.146.16.0/24 Origin: 396281 RESERVED, ZZ 23.146.16.0/24 Transit: 7018 ATT-INTERNET4, US 23.146.19.0/24 Origin: 396281 RESERVED, ZZ 23.146.19.0/24 Transit: 7018 ATT-INTERNET4, 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 /9:16 /10:41 /11:92 /12:299 /13:580 /14:1213 /15:2141 /16:13939 /17:8198 /18:13619 /19:24443 /20:43742 /21:51398 /22:111444 /23:101561 /24:608443 /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 6623 7707 UNI2-AS, ES 8151 6323 12131 UNINET, MX 11492 3532 4735 CABLEONE, US 39891 3489 4780 ALJAWWALSTC-AS, SA 6327 3417 3622 SHAW, CA 7155 2823 3864 VIASAT-SP-BACKBONE, US 22773 2499 3346 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2313 13425 AMAZON-02, US 30036 2227 2567 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2185 3499 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) ---------------------------------------------- 1:2376 2:1499 3:766 4:10 5:4697 6:163 7:6 8:1579 9:1 11:172 12:1364 13:425 14:2514 15:353 16:284 17:375 18:915 20:527 21:4 22:188 23:7523 24:2744 25:2 27:2753 29:19 31:3266 32:36 33:1 34:83 35:205 36:2965 37:4622 38:9167 39:911 40:169 41:4228 42:1988 43:2626 44:384 45:18630 46:5041 47:302 49:1938 50:1885 51:590 52:1561 54:317 55:1094 56:11 57:257 58:2246 59:1295 60:1167 61:2823 62:2919 63:1799 64:5451 65:2175 66:4605 67:3051 68:1120 69:3825 70:1063 71:624 72:2813 74:2759 75:1509 76:615 77:2703 78:1886 79:1704 80:2202 81:2074 82:3091 83:1429 84:1865 85:3418 86:1066 87:2129 88:1285 89:4376 90:775 91:8346 92:2697 93:2887 94:4053 95:4298 96:1418 97:312 98:979 99:682 100:72 101:1387 102:3926 103:32816 104:5039 105:736 106:1034 107:2650 108:1215 109:4077 110:2252 111:3330 112:2091 113:1797 114:1975 115:2160 116:2064 117:2559 118:2862 119:1965 120:1945 121:1372 122:2756 123:2169 124:1634 125:2878 126:91 128:1580 129:953 130:1284 131:1959 132:776 133:451 134:1536 135:332 136:1352 137:1117 138:2891 139:1590 140:1586 141:1502 142:1898 143:1757 144:1116 145:503 146:2182 147:2106 148:2702 149:2872 150:1235 151:1916 152:2088 153:498 154:8121 155:1967 156:3272 157:1903 158:1323 159:2454 160:3829 161:1875 162:3742 163:2150 164:1701 165:2188 166:1477 167:1901 168:4280 169:789 170:5072 171:1005 172:4432 173:3285 174:914 175:1302 176:3697 177:4685 178:3636 179:2258 180:2763 181:4064 182:3437 183:2162 184:2050 185:21530 186:5143 187:4437 188:4250 189:4278 190:9529 191:1465 192:11182 193:9462 194:7777 195:5510 196:3258 197:3670 198:6060 199:8499 200:8066 201:6336 202:10275 203:10591 204:4531 205:3590 206:4448 207:3453 208:4239 209:5159 210:4536 211:2538 212:4537 213:3717 214:1025 215:48 216:6721 217:3111 218:1340 219:396 220:2090 221:1093 222:718 223:2397 End of report