| IP: | 121.138.57.11 |
| Country: | |
| Region: | 11 |
| City: | Seocho-gu |
| Latitude: | 37.4802 |
| Longitude: | 127.0444 |
| Zip code: | 067 |
| Reverse DNS: | 121.138.57.11 |
| Timezone: | Asia/Seoul (2026-06-02 06:34 KST) |
| Class A: | 121 |
| Class B: | 121.138 |
| Class C: | 121.138.57 |
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