221.144.0.0/13
Currently announced by AS4766 KT Corporation (Korea Telecom), in the routed prefix 221.144.0.0/13.
- Current ASN
- AS4766
- KT Corporation (Korea Telecom)
- Routed prefix
- 221.144.0.0/13
- Most specific route covering this prefix
- ASNs over time
- 1
- 2 announcement records
- RIR allocation
- APNIC
- South Korea · 221.144.0.0/12
Routing data · Nov 8, 2026, 12:23 UTC
ASN historyEvery routed prefix covering 221.144.0.0/13
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 221.144.0.0/13 | AS4766 | KT Corporation (Korea Telecom) |  South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.144.0.0/12 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
More specific routes26 total
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 221.144.37.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.144.152.0/24 | AS55622 | CNUE | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.144.191.0/24 | AS152198 | Gangwon State University | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.145.178.0/24 | AS45400 | Korea Telecom | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.145.224.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.146.17.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.146.193.0/24 | AS9856 | WOORI Investment @ Securities | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.146.229.0/24 | AS9972 | INTMANAGEMENT Corp., | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.147.50.0/24 | AS152214 | Korean Air Lines | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.147.51.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.147.52.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.147.53.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.147.54.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.147.55.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.147.83.0/24 | AS9526 | KOSCOM | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.147.101.0/24 | AS9850 | WOW-TV | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.149.141.0/24 | AS10185 | Hana Bank Co. | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.149.230.0/24 | AS45360 | SSANGYONG CEMENT INDUSTRY CO.,LTD | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.149.240.0/22 | AS131842 | Office of the president | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.150.21.0/24 | AS10184 | Korean Federation of Community Credit Cooperatives | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.150.114.0/24 | AS55592 | Korea Data Telecommunication Co., Ltd. | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.150.156.0/23 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.150.196.0/24 | AS38697 | Hankyong National Univercity | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.151.165.0/24 | AS38405 | Gwang Myeong Office of Education | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.151.172.0/24 | AS38112 | Korea Housing Urban Guarantee Corporation | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.151.180.0/24 | AS9526 | KOSCOM | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
Change logAll changes
The routes covering this address have had no origin changes since ASNBase started monitoring.