IPv4 R&E Routing Table Report 23:05 GMT Wed 21 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: 980905 Prefixes after maximum aggregation (per Origin AS): 378490 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 480074 Number of IPv4 prefixes with a valid ROA: 544770 Number of IPv4 prefixes with an invalid ROA: 707 Number of IPv4 prefixes with no ROA: 435428 Total ASes present in the Internet Routing Table: 76700 Prefixes per ASN: 12.79 Origin-only ASes present in the Internet Routing Table: 65753 Origin ASes announcing only one prefix: 26898 Transit ASes present in the Internet Routing Table: 10947 Transit-only ASes present in the Internet Routing Table: 539 Paths with bogon ASNs present in the IPv4 Routing Table: 30 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: 1027 Number of instances of unregistered ASNs: 1044 Number of 32-bit ASNs allocated by the RIRs: 46478 Number of 32-bit ASNs visible in the Routing Table: 38196 Prefixes from 32-bit ASNs in the Routing Table: 203337 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: 3109386496 Equivalent to 185 /8s, 85 /16s and 121 /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: 319696 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 258839 Total APNIC prefixes after maximum aggregation: 77117 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 249946 Unique aggregates announced from the APNIC address blocks: 103107 APNIC Region origin ASes present in the Internet Routing Table: 14559 APNIC Prefixes per ASN: 17.17 APNIC Region origin ASes announcing only one prefix: 4400 APNIC Region transit ASes present in the Internet Routing Table: 1960 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: 10099 Number of APNIC addresses announced to Internet: 748639232 Equivalent to 44 /8s, 159 /16s and 84 /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: 289245 Total ARIN prefixes after maximum aggregation: 130722 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 289718 Unique aggregates announced from the ARIN address blocks: 139292 ARIN Region origin ASes present in the Internet Routing Table: 19197 ARIN Prefixes per ASN: 15.09 ARIN Region origin ASes announcing only one prefix: 7035 ARIN Region transit ASes present in the Internet Routing Table: 1927 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: 5200 Number of ARIN addresses announced to Internet: 1352695040 Equivalent to 80 /8s, 160 /16s and 125 /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: 272882 Total RIPE prefixes after maximum aggregation: 133892 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 271133 Unique aggregates announced from the RIPE address blocks: 174715 RIPE Region origin ASes present in the Internet Routing Table: 28902 RIPE Prefixes per ASN: 9.38 RIPE Region origin ASes announcing only one prefix: 12079 RIPE Region transit ASes present in the Internet Routing Table: 3961 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: 12437 Number of RIPE addresses announced to Internet: 731373568 Equivalent to 43 /8s, 151 /16s and 224 /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: 123496 Total LACNIC prefixes after maximum aggregation: 29494 LACNIC Deaggregation factor: 4.19 Prefixes being announced from the LACNIC address blocks: 119919 Unique aggregates announced from the LACNIC address blocks: 48902 LACNIC Region origin ASes present in the Internet Routing Table: 11230 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2691 LACNIC Region transit ASes present in the Internet Routing Table: 2529 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: 9185 Number of LACNIC addresses announced to Internet: 171703552 Equivalent to 10 /8s, 59 /16s and 253 /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: 35416 Total AfriNIC prefixes after maximum aggregation: 6635 AfriNIC Deaggregation factor: 5.34 Prefixes being announced from the AfriNIC address blocks: 49747 Unique aggregates announced from the AfriNIC address blocks: 13662 AfriNIC Region origin ASes present in the Internet Routing Table: 1909 AfriNIC Prefixes per ASN: 26.06 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: 5.5 Max AfriNIC Region AS path length visible: 79 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1275 Number of AfriNIC addresses announced to Internet: 104762624 Equivalent to 6 /8s, 62 /16s and 141 /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 6171 844 649 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4439 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4358 534 301 BBIL-AP BHARTI Airtel Ltd., IN 7552 3904 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3693 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3272 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2867 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 40827 5089 AMAZON-02, US 11492 4735 314 586 CABLEONE, US 7155 3864 286 85 VIASAT-SP-BACKBONE, US 6327 3622 1320 81 SHAW, CA 174 3435 8746 882 COGENT-174, US 22773 3349 3017 167 ASN-CXA-ALL-CCI-22773-RDC, US 749 3231 54784 2482 DNIC-AS-00749, US 396982 3164 3851 417 GOOGLE-CLOUD-PLATFORM, US 16625 3023 1262 2227 AKAMAI-AS, US 36352 2827 231 858 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 7712 1714 148 UNI2-AS, ES 39891 4797 293 62 ALJAWWALSTC-AS, SA 20940 3962 3395 123 AKAMAI-ASN1, NL 9009 3803 330 2019 M247, RO 12389 3073 2305 887 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2387 360 578 TELLCOM-AS, TR 212238 2145 150 1576 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1573 1852 14 TE-AS TE-AS, EG 62240 1422 94 737 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 12143 3251 581 UNINET, MX 10620 3499 480 1018 Telmex Colombia S.A., CO 13999 2510 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 1197 371 22 Telefonica del Peru S.A.A., PE 11664 1112 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1058 67 380 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 1654 389 17 LINKdotNET-AS, EG 29571 1603 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 1037 523 46 Vodafone-, EG 20011 980 185 285 INTERNET-SOLUTIONS, ZA 15399 545 57 60 WANANCHI-, KE 36914 543 82 3 KENET-AS, 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 40827 5089 AMAZON-02, US 8151 12143 3251 581 UNINET, MX 9808 11093 8756 96 CHINAMOBILE-CN China Mobile Communication 12479 7712 1714 148 UNI2-AS, ES 7545 6171 844 649 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 293 62 ALJAWWALSTC-AS, SA 11492 4735 314 586 CABLEONE, US 18403 4439 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4358 534 301 BBIL-AP BHARTI Airtel Ltd., IN 20940 3962 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 12143 11562 UNINET, MX 9808 11093 10997 CHINAMOBILE-CN China Mobile Communications Grou 12479 7712 7564 UNI2-AS, ES 7545 6171 5522 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 4735 ALJAWWALSTC-AS, SA 18403 4439 4414 FPT-AS-AP FPT Telecom Company, VN 11492 4735 4149 CABLEONE, US 9498 4358 4057 BBIL-AP BHARTI Airtel Ltd., IN 7552 3904 3878 VIETEL-AS-AP Viettel Group, VN 20940 3962 3839 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 /16:13936 /17:8200 /18:13599 /19:24458 /20:43736 /21:51406 /22:111453 /23:101593 /24:608126 /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 6628 7712 UNI2-AS, ES 8151 6335 12143 UNINET, MX 11492 3532 4735 CABLEONE, US 39891 3489 4797 ALJAWWALSTC-AS, SA 6327 3417 3622 SHAW, CA 7155 2823 3864 VIASAT-SP-BACKBONE, US 22773 2499 3349 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2325 13425 AMAZON-02, US 30036 2230 2570 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) ---------------------------------------------- 1:2380 2:1500 3:767 4:11 5:4697 6:163 7:6 8:1584 9:1 11:172 12:1362 13:430 14:2518 15:353 16:284 17:376 18:918 20:527 21:4 22:188 23:7520 24:2747 25:2 27:2752 29:19 31:3265 32:36 33:1 34:83 35:207 36:2966 37:4617 38:9140 39:910 40:169 41:4231 42:1978 43:2630 44:385 45:18639 46:5035 47:302 49:1938 50:1882 51:590 52:1558 54:313 55:1096 56:11 57:258 58:2243 59:1296 60:1167 61:2829 62:2917 63:1799 64:5452 65:2178 66:4610 67:3054 68:1121 69:3825 70:1063 71:625 72:2815 74:2757 75:1507 76:615 77:2704 78:1887 79:1404 80:2200 81:2074 82:3095 83:1428 84:1859 85:3415 86:1066 87:2128 88:1285 89:4378 90:775 91:8352 92:2698 93:2889 94:4049 95:4303 96:1418 97:312 98:979 99:686 100:71 101:1409 102:3871 103:32799 104:5043 105:763 106:1034 107:2650 108:1216 109:3922 110:2254 111:3330 112:2088 113:1806 114:1973 115:2162 116:2068 117:2545 118:2873 119:1967 120:1945 121:1375 122:2759 123:2176 124:1623 125:2884 126:91 128:1585 129:957 130:1285 131:1961 132:777 133:451 134:1535 135:332 136:1351 137:1116 138:2890 139:1598 140:1585 141:1498 142:1897 143:1760 144:1121 145:503 146:2181 147:2108 148:2702 149:2874 150:1232 151:1926 152:2087 153:498 154:8123 155:1972 156:3276 157:1905 158:1322 159:2450 160:3829 161:1877 162:3744 163:2153 164:1703 165:2201 166:1478 167:1903 168:4279 169:788 170:5079 171:1005 172:4434 173:3291 174:915 175:1305 176:3700 177:4665 178:3635 179:2292 180:2763 181:4066 182:3440 183:2160 184:2052 185:21538 186:5144 187:4439 188:4253 189:4275 190:9526 191:1499 192:11186 193:9457 194:7770 195:5521 196:3257 197:3671 198:6060 199:8504 200:8058 201:6335 202:10275 203:10592 204:4523 205:3600 206:4427 207:3455 208:4236 209:5150 210:4540 211:2545 212:4540 213:3716 214:1027 215:48 216:6714 217:3127 218:1344 219:396 220:2080 221:1093 222:718 223:2397 End of report