| 211.0.0.0/8 | WHOIS (APNIC) | Asia Pacific Network Information Center, Pty. Ltd. | AU |
| 211.252.0.0/15 | BGP route | AS4766 Korea Telecom | — |
| 211.252.0.0/15 | APNIC assigned | — | KR |
| 211.252.192.0/20 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.224.0/20 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.48.0/20 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.64.0/20 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.176.0/20 | BGP route | AS10176 Daejon Metropolitan Office of Education | — |
| 211.253.176.0/20 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.224.0/20 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.112.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.136.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.144.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.160.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.216.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.240.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.0.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.40.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.48.0/21 | BGP route | AS4766 Korea Telecom | — |
| 211.253.72.0/21 | BGP route | AS9531 Gwangju Education Research Information Service | — |
| 211.253.104.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.120.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.144.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.192.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.240.0/21 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.0.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.4.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.8.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.12.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.16.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.20.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.24.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.28.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.32.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.36.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.40.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.44.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.48.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.52.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.56.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.60.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.64.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.68.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.72.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.76.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.80.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.84.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.88.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.92.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.96.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.100.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.104.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.108.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.120.0/22 | BGP route | AS4766 Korea Telecom | — |
| 211.252.120.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.252.124.0/22 | WHOIS (APNIC) | Korea Telecom | KR |
| 211.253.68.0/22 | BGP route | AS9531 Gwangju Education Research Information Service | — |
| 211.253.244.0/22 | BGP route | AS4766 Korea Telecom | — |
| 211.253.228.0/23 | BGP route | AS9955 Baekseok University | — |
| 211.253.230.0/23 | BGP route | AS9955 Baekseok University | — |
| 211.253.236.0/23 | BGP route | AS9955 Baekseok University | — |
| 211.253.238.0/23 | BGP route | AS9955 Baekseok University | — |
| 211.252.20.0/24 | BGP route | AS38407 Gyeonggi-Do Ansan Office of Education | — |
| 211.252.21.0/24 | BGP route | AS38414 Gyeonggi siheung office of education | — |
| 211.252.36.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.37.0/24 | BGP route | AS17841 NATIONAL INFORMATION RESOURCES SERVICE | — |
| 211.252.61.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.64.0/24 | BGP route | AS9318 SK Broadband Co Ltd | — |
| 211.252.65.0/24 | BGP route | AS9318 SK Broadband Co Ltd | — |
| 211.252.66.0/24 | BGP route | AS9318 SK Broadband Co Ltd | — |
| 211.252.67.0/24 | BGP route | AS9318 SK Broadband Co Ltd | — |
| 211.252.68.0/24 | BGP route | AS9318 SK Broadband Co Ltd | — |
| 211.252.69.0/24 | BGP route | AS9318 SK Broadband Co Ltd | — |
| 211.252.71.0/24 | BGP route | AS38405 Gwang Myeong Office of Education | — |
| 211.252.112.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.113.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.114.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.115.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.116.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.128.0/24 | BGP route | AS9524 Hyundai Autoever Corp. | — |
| 211.252.129.0/24 | BGP route | AS9524 Hyundai Autoever Corp. | — |
| 211.252.130.0/24 | BGP route | AS9524 Hyundai Autoever Corp. | — |
| 211.252.131.0/24 | BGP route | AS9524 Hyundai Autoever Corp. | — |
| 211.252.132.0/24 | BGP route | AS9524 Hyundai Autoever Corp. | — |
| 211.252.133.0/24 | BGP route | AS9524 Hyundai Autoever Corp. | — |
| 211.252.134.0/24 | BGP route | AS9524 Hyundai Autoever Corp. | — |
| 211.252.135.0/24 | BGP route | AS9524 Hyundai Autoever Corp. | — |
| 211.252.141.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.150.0/24 | BGP route | AS9642 Korea Internet Security Agency | — |
| 211.252.151.0/24 | BGP route | AS9642 Korea Internet Security Agency | — |
| 211.252.157.0/24 | BGP route | AS55598 Korea Environmental Technology Industry Institute | — |
| 211.252.200.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.201.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.203.0/24 | BGP route | AS17841 NATIONAL INFORMATION RESOURCES SERVICE | — |
| 211.252.208.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.209.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.210.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.220.0/24 | BGP route | AS9647 Seoul Metropolitan Government | — |
| 211.252.223.0/24 | BGP route | AS45400 Korea Telecom | — |
| 211.252.233.0/24 | BGP route | AS4766 Korea Telecom | — |
| 211.252.234.0/24 | BGP route | AS4766 Korea Telecom | — |