| 203.0.0.0/8 | WHOIS (APNIC) | Asia Pacific Network Information Center, Pty. Ltd. | AU |
| 203.148.128.0/17 | WHOIS (APNIC) | ANET Co., Ltd. | TH |
| 203.148.128.0/19 | APNIC assigned | — | TH |
| 203.148.160.0/19 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.160.0/19 | APNIC assigned | — | TH |
| 203.148.192.0/19 | APNIC assigned | — | TH |
| 203.148.224.0/19 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.128.0/20 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.176.0/20 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.208.0/20 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.224.0/20 | APNIC assigned | — | TH |
| 203.148.200.0/21 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.240.0/21 | APNIC assigned | — | TH |
| 203.148.192.0/22 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.248.0/22 | APNIC assigned | — | TH |
| 203.148.252.0/22 | APNIC assigned | — | TH |
| 203.148.142.0/23 | BGP route | AS133167 KGI Securities (Thailand) Public Company Limited | — |
| 203.148.160.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.172.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.174.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.176.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.178.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.180.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.182.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.190.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.200.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.204.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.206.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.210.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.212.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.214.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.216.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.218.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.220.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.236.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.238.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.242.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.244.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.248.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.250.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.254.0/23 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.141.0/24 | BGP route | AS24040 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.161.0/24 | BGP route | AS24040 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.162.0/24 | BGP route | AS7630 KASIKORNBANK PUBLIC COMPANY LIMITED | — |
| 203.148.163.0/24 | BGP route | AS7630 KASIKORNBANK PUBLIC COMPANY LIMITED | — |
| 203.148.182.0/24 | BGP route | AS133167 KGI Securities (Thailand) Public Company Limited | — |
| 203.148.183.0/24 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.185.0/24 | WHOIS (APNIC) | Access Microtech | TH |
| 203.148.188.0/24 | BGP route | AS24040 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.189.0/24 | BGP route | AS24040 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.250.0/24 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.251.0/24 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |
| 203.148.253.0/24 | BGP route | AS4776 DataOne Asia (Thailand) Co.,Ltd. | — |