| IP: | 121.197.157.73 |
| Country: | China (CN) |
| Region: | 22 |
| City: | Beijing |
| Latitude: | 39.9289 |
| Longitude: | 116.3883 |
| Reverse DNS: | smtp2157-73.mail.aliyun.com |
| Class A: | 121 |
| Class B: | 121.197 |
| Class C: | 121.197.157 |
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