| Domain | Date |
| 0.pfsense.pool.ntp.org | 2021-02-02 |
| asia.pool.ntp.org | 2019-11-18 |
| 0.asia.pool.ntp.org | 2019-08-13 |
| 0.ubuntu.pool.ntp.org | 2018-01-13 |
| 1.pool.ntp.org | 2018-01-04 |
| t1.hshh.org | 2018-01-04 |
| 0.pool.ntp.org | 2017-12-25 |
| 3.pool.ntp.org | 2017-10-26 |
| 2.pool.ntp.org | 2017-10-13 |
| 1.debian.pool.ntp.org | 2017-09-26 |