| IP: | 121.131.43.72 |
| Country: | |
| Region: | 11 |
| City: | Seodaemun-gu |
| Latitude: | 37.5551 |
| Longitude: | 126.9369 |
| Zip code: | 037 |
| Reverse DNS: | 121.131.43.72 |
| Timezone: | Asia/Seoul (2026-04-24 19:39 KST) |
| Class A: | 121 |
| Class B: | 121.131 |
| Class C: | 121.131.43 |
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