221.152.0.0/13
Currently announced by AS4766 KT Corporation (Korea Telecom), in the routed prefix 221.152.0.0/13.
- Current ASN
- AS4766
- KT Corporation (Korea Telecom)
- Routed prefix
- 221.152.0.0/13
- 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 221.152.0.0/13
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 221.152.0.0/13 | 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 routes23 total
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 221.153.249.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.154.82.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.154.83.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.154.84.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.154.85.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.154.86.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.154.87.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.154.88.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.154.89.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.154.90.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.157.100.0/22 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.157.104.0/21 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.157.112.0/22 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.157.116.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.157.125.0/24 | AS152232 | kt cloud Co., Ltd | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.157.126.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.157.127.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.157.128.0/23 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.158.73.0/24 | AS17576 | National Research Foundation of Korea | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.159.130.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.159.186.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.159.187.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 221.159.210.0/24 | AS55622 | CNUE | 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.