| Domain | Date |
| europe.pool.ntp.org | 2021-05-28 |
| 1.europe.pool.ntp.org | 2021-04-06 |
| 3.pool.ntp.org | 2021-03-08 |
| 3.ubuntu.pool.ntp.org | 2021-03-04 |
| 0.debian.pool.ntp.org | 2021-02-26 |
| 3.debian.pool.ntp.org | 2021-02-07 |
| 2.europe.pool.ntp.org | 2021-02-03 |
| 0.pool.ntp.org | 2021-02-01 |
| 2.pool.ntp.org | 2021-01-30 |