| IP: | 123.143.21.89 |
| Country: | |
| Region: | 43 |
| City: | Cheongju-si |
| Latitude: | 36.637 |
| Longitude: | 127.4339 |
| Zip code: | 284 |
| Reverse DNS: | 123.143.21.89 |
| Timezone: | Asia/Seoul (2026-05-10 16:30 KST) |
| Class A: | 123 |
| Class B: | 123.143 |
| Class C: | 123.143.21 |
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