| Domain | Date |
| 0.europe.pool.ntp.org | 2019-04-29 |
| 3.europe.pool.ntp.org | 2019-04-28 |
| 1.europe.pool.ntp.org | 2019-04-05 |
| 0.de.pool.ntp.org | 2019-04-03 |
| europe.pool.ntp.org | 2019-02-20 |
| pool.ntp.org | 2018-12-05 |
| 2.europe.pool.ntp.org | 2018-11-27 |
| 1.pool.ntp.org | 2018-10-11 |
| 0.pool.ntp.org | 2017-12-24 |
| 1.debian.pool.ntp.org | 2017-12-18 |
| 3.ubuntu.pool.ntp.org | 2017-12-04 |
| t3.hshh.org | 2017-11-22 |
| 3.debian.pool.ntp.org | 2017-10-29 |
| 0.ubuntu.pool.ntp.org | 2017-09-28 |
| 3.pool.ntp.org | 2017-09-22 |
| 2.android.pool.ntp.org | 2017-09-07 |
| 0.centos.pool.ntp.org | 2017-09-06 |