| IP: | 221.138.126.21 |
| Country: | |
| Region: | 11 |
| City: | Seoul |
| Latitude: | 37.5658 |
| Longitude: | 126.978 |
| Zip code: | 04524 |
| Reverse DNS: | 221.138.126.21 |
| Timezone: | Asia/Seoul (2026-06-30 18:00 KST) |
| Class A: | 221 |
| Class B: | 221.138 |
| Class C: | 221.138.126 |
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