203.251.0.0/17
Currently announced by AS4766 KT Corporation (Korea Telecom), in the routed prefix 203.251.0.0/17.
- Current ASN
- AS4766
- KT Corporation (Korea Telecom)
- Routed prefix
- 203.251.0.0/17
- Most specific route covering this prefix
- ASNs over time
- 1
- 1 announcement record
- RIR allocation
- APNIC
- South Korea · 203.251.0.0/17
Routing data · Nov 8, 2026, 12:23 UTC
ASN historyEvery routed prefix covering 203.251.0.0/17
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 203.251.0.0/17 | AS4766 | KT Corporation (Korea Telecom) |  South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
More specific routes5 total
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 203.251.7.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 203.251.60.0/24 | AS55617 | The Kwangju Bank Ltd. | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 203.251.77.0/24 | AS38124 | iM DS Co.,Ltd. | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 203.251.80.0/23 | AS152232 | kt cloud Co., Ltd | South Korea | Before monitoring | 2026-11-08 12:23 | Announcing |
| 203.251.112.0/24 | AS4766 | KT Corporation (Korea Telecom) | South Korea | Before monitoring | 2026-10-31 20:25 | Stopped |
Change logAll changes
The routes covering this address have had no origin changes since ASNBase started monitoring.