| 223.0.0.0/8 | WHOIS (ARIN) | Asia Pacific Network Information Centre | AU |
| 223.194.0.0/15 | WHOIS (APNIC) | Korean Education Network | KR |
| 223.194.0.0/15 | APNIC assigned | — | KR |
| 223.195.0.0/18 | BGP route | AS9769 Sejong University | — |
| 223.194.0.0/19 | BGP route | AS10088 KWANGWOON UNIVERSITY | — |
| 223.194.64.0/19 | BGP route | AS18330 HONGIK UNIVERSITY | — |
| 223.194.128.0/19 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.112.0/20 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.64.0/20 | BGP route | AS9769 Sejong University | — |
| 223.195.192.0/20 | BGP route | AS9318 SK Broadband Co Ltd | — |
| 223.194.240.0/21 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.80.0/21 | BGP route | AS4766 Korea Telecom | — |
| 223.194.136.0/22 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.140.0/22 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.144.0/22 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.160.0/22 | BGP route | AS10045 Hanbat National University | — |
| 223.194.192.0/22 | BGP route | AS10045 Hanbat National University | — |
| 223.194.232.0/22 | BGP route | AS18026 JEJU NATIONAL UNIVERSITY | — |
| 223.194.236.0/22 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.248.0/22 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.88.0/22 | BGP route | AS4766 Korea Telecom | — |
| 223.195.116.0/22 | BGP route | AS38110 Chungwoon University | — |
| 223.195.120.0/22 | BGP route | AS38110 Chungwoon University | — |
| 223.195.128.0/22 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.132.0/22 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.136.0/22 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.140.0/22 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.54.0/23 | BGP route | AS18330 HONGIK UNIVERSITY | — |
| 223.194.110.0/23 | BGP route | AS18330 HONGIK UNIVERSITY | — |
| 223.194.128.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.130.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.132.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.134.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.148.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.152.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.154.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.156.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.158.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.194.190.0/23 | BGP route | AS4766 Korea Telecom | — |
| 223.194.228.0/23 | BGP route | AS18330 HONGIK UNIVERSITY | — |
| 223.194.230.0/23 | BGP route | AS18026 JEJU NATIONAL UNIVERSITY | — |
| 223.194.252.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.92.0/23 | BGP route | AS4766 Korea Telecom | — |
| 223.195.94.0/23 | BGP route | AS18330 HONGIK UNIVERSITY | — |
| 223.195.124.0/23 | BGP route | AS38110 Chungwoon University | — |
| 223.195.126.0/23 | BGP route | AS18330 HONGIK UNIVERSITY | — |
| 223.195.128.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.130.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.132.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.134.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.136.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.138.0/23 | BGP route | AS3786 LG DACOM Corporation | — |
| 223.195.140.0/23 | BGP route | AS3786 LG DACOM Corporation | — |