IPv4 R&E Routing Table Report 23:05 GMT Mon 19 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: 981407 Prefixes after maximum aggregation (per Origin AS): 378503 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 479646 Number of IPv4 prefixes with a valid ROA: 545046 Number of IPv4 prefixes with an invalid ROA: 631 Number of IPv4 prefixes with no ROA: 435730 Total ASes present in the Internet Routing Table: 76714 Prefixes per ASN: 12.79 Origin-only ASes present in the Internet Routing Table: 65758 Origin ASes announcing only one prefix: 26906 Transit ASes present in the Internet Routing Table: 10956 Transit-only ASes present in the Internet Routing Table: 542 Paths with bogon ASNs present in the IPv4 Routing Table: 23 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: 1033 Number of instances of unregistered ASNs: 1038 Number of 32-bit ASNs allocated by the RIRs: 46452 Number of 32-bit ASNs visible in the Routing Table: 38193 Prefixes from 32-bit ASNs in the Routing Table: 203189 Number of bogon 32-bit ASNs visible in the Routing Table: 18 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 447 Number of addresses announced to Internet: 3109035264 Equivalent to 185 /8s, 80 /16s and 29 /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: 320285 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 258491 Total APNIC prefixes after maximum aggregation: 77020 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 249665 Unique aggregates announced from the APNIC address blocks: 103110 APNIC Region origin ASes present in the Internet Routing Table: 14564 APNIC Prefixes per ASN: 17.14 APNIC Region origin ASes announcing only one prefix: 4403 APNIC Region transit ASes present in the Internet Routing Table: 1969 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: 10102 Number of APNIC addresses announced to Internet: 748491520 Equivalent to 44 /8s, 157 /16s and 19 /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: 289575 Total ARIN prefixes after maximum aggregation: 130569 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 290029 Unique aggregates announced from the ARIN address blocks: 138802 ARIN Region origin ASes present in the Internet Routing Table: 19209 ARIN Prefixes per ASN: 15.10 ARIN Region origin ASes announcing only one prefix: 7049 ARIN Region transit ASes present in the Internet Routing Table: 1929 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: 5205 Number of ARIN addresses announced to Internet: 1352354560 Equivalent to 80 /8s, 155 /16s and 75 /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: 273368 Total RIPE prefixes after maximum aggregation: 133972 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 271494 Unique aggregates announced from the RIPE address blocks: 174506 RIPE Region origin ASes present in the Internet Routing Table: 28897 RIPE Prefixes per ASN: 9.40 RIPE Region origin ASes announcing only one prefix: 12068 RIPE Region transit ASes present in the Internet Routing Table: 3965 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: 12432 Number of RIPE addresses announced to Internet: 731251200 Equivalent to 43 /8s, 150 /16s and 2 /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: 123335 Total LACNIC prefixes after maximum aggregation: 29511 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 119741 Unique aggregates announced from the LACNIC address blocks: 48880 LACNIC Region origin ASes present in the Internet Routing Table: 11228 LACNIC Prefixes per ASN: 10.66 LACNIC Region origin ASes announcing only one prefix: 2692 LACNIC Region transit ASes present in the Internet Routing Table: 2521 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 29 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9181 Number of LACNIC addresses announced to Internet: 171662592 Equivalent to 10 /8s, 59 /16s and 93 /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: 35605 Total AfriNIC prefixes after maximum aggregation: 6791 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 50031 Unique aggregates announced from the AfriNIC address blocks: 13949 AfriNIC Region origin ASes present in the Internet Routing Table: 1906 AfriNIC Prefixes per ASN: 26.25 AfriNIC Region origin ASes announcing only one prefix: 694 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: 1273 Number of AfriNIC addresses announced to Internet: 105057280 Equivalent to 6 /8s, 67 /16s and 12 /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 10994 8756 96 CHINAMOBILE-CN China Mobile Communication 7545 6170 842 652 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4482 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4358 534 301 BBIL-AP BHARTI Airtel Ltd., IN 7552 3907 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3693 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3271 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2865 852 534 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 45090 2173 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 4755 2171 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 13401 40824 5066 AMAZON-02, US 11492 4726 313 592 CABLEONE, US 7155 3864 286 85 VIASAT-SP-BACKBONE, US 6327 3622 1320 81 SHAW, CA 174 3474 8747 883 COGENT-174, US 22773 3346 3015 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3230 54783 2481 DNIC-AS-00749, US 396982 3164 3851 416 GOOGLE-CLOUD-PLATFORM, US 16625 3027 1263 2226 AKAMAI-AS, US 36352 2824 230 868 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 7690 1714 148 UNI2-AS, ES 39891 4797 293 62 ALJAWWALSTC-AS, SA 20940 3964 3395 123 AKAMAI-ASN1, NL 9009 3806 328 1988 M247, RO 12389 3070 2305 887 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2391 360 581 TELLCOM-AS, TR 212238 2149 151 1581 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 12012 3248 588 UNINET, MX 10620 3499 480 1018 Telmex Colombia S.A., CO 13999 2520 540 364 Mega Cable, S.A. de C.V., MX 11830 1996 369 64 Instituto Costarricense de Electricidad y 28573 1352 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1338 785 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1196 371 22 Telefonica del Peru S.A.A., PE 11664 1109 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 1651 389 16 LINKdotNET-AS, EG 29571 1598 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 552 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 13401 40824 5066 AMAZON-02, US 8151 12012 3248 588 UNINET, MX 9808 10994 8756 96 CHINAMOBILE-CN China Mobile Communication 12479 7690 1714 148 UNI2-AS, ES 7545 6170 842 652 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 293 62 ALJAWWALSTC-AS, SA 11492 4726 313 592 CABLEONE, US 18403 4482 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4358 534 301 BBIL-AP BHARTI Airtel Ltd., IN 20940 3964 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 12012 11424 UNINET, MX 9808 10994 10898 CHINAMOBILE-CN China Mobile Communications Grou 12479 7690 7542 UNI2-AS, ES 7545 6170 5518 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 4735 ALJAWWALSTC-AS, SA 18403 4482 4457 FPT-AS-AP FPT Telecom Company, VN 11492 4726 4134 CABLEONE, US 9498 4358 4057 BBIL-AP BHARTI Airtel Ltd., IN 7552 3907 3881 VIETEL-AS-AP Viettel Group, VN 20940 3964 3841 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 /16:13932 /17:8218 /18:13622 /19:24475 /20:43744 /21:51386 /22:111494 /23:101538 /24:608600 /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 6606 7690 UNI2-AS, ES 8151 6234 12012 UNINET, MX 11492 3532 4726 CABLEONE, US 39891 3489 4797 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 2322 13401 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) ---------------------------------------------- 1:2360 2:1499 3:767 4:10 5:4691 6:163 7:6 8:1581 9:1 11:172 12:1365 13:414 14:2517 15:352 16:284 17:375 18:915 20:522 21:4 22:188 23:7518 24:2743 25:2 27:2756 29:19 31:3271 32:36 33:1 34:83 35:204 36:2908 37:4620 38:9183 39:910 40:169 41:4209 42:2014 43:2623 44:384 45:18623 46:5037 47:301 49:1938 50:1888 51:590 52:1557 54:309 55:1093 56:11 57:257 58:2246 59:1295 60:1167 61:2820 62:2923 63:1806 64:5455 65:2172 66:4613 67:3053 68:1120 69:3825 70:1064 71:624 72:2818 74:2767 75:1611 76:615 77:2705 78:1870 79:1754 80:2200 81:2072 82:3117 83:1428 84:1858 85:3421 86:1066 87:2153 88:1286 89:4375 90:775 91:8341 92:2688 93:2890 94:4053 95:4290 96:1417 97:312 98:978 99:686 100:72 101:1388 102:3927 103:32815 104:5043 105:768 106:1034 107:2649 108:1214 109:4080 110:2253 111:3325 112:2072 113:1797 114:1972 115:2162 116:2059 117:2556 118:2878 119:1966 120:1924 121:1367 122:2756 123:2169 124:1633 125:2875 126:91 128:1584 129:954 130:1285 131:1970 132:776 133:451 134:1536 135:332 136:1349 137:1112 138:2883 139:1594 140:1585 141:1505 142:1897 143:1755 144:1112 145:503 146:2149 147:2105 148:2699 149:2869 150:1235 151:1909 152:2088 153:498 154:8131 155:1974 156:3322 157:1913 158:1323 159:2446 160:3829 161:1876 162:3744 163:2144 164:1697 165:2197 166:1478 167:1903 168:4283 169:786 170:5077 171:1005 172:4437 173:3287 174:914 175:1308 176:3696 177:4667 178:3632 179:2278 180:2752 181:4064 182:3437 183:2143 184:2051 185:21529 186:5146 187:4425 188:4248 189:4209 190:9534 191:1469 192:11224 193:9459 194:7769 195:5525 196:3283 197:3678 198:6049 199:8494 200:8061 201:6343 202:10280 203:10589 204:4535 205:3601 206:4461 207:3461 208:4250 209:5163 210:4534 211:2538 212:4539 213:3724 214:1030 215:48 216:6713 217:3131 218:1337 219:396 220:2091 221:1083 222:717 223:2388 End of report