| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| optec-exp.com.cn | SOA | 600 | dns13.hichina.com hostmaster@hichina.com 2024060609 3600 1200 86400 600 | |
| optec-exp.com.cn | NS | 21600 | dns14.hichina.com | |
| optec-exp.com.cn | NS | 21600 | dns13.hichina.com | |
| optec-exp.com.cn | MX | 600 | 5 | mx1.qiye.aliyun.com |
| optec-exp.com.cn | MX | 600 | 10 | mx2.qiye.aliyun.com |
| optec-exp.com.cn | MX | 600 | 15 | mx3.qiye.aliyun.com |