| Domain | Date |
| 2.europe.pool.ntp.org | 2017-12-20 |
| 2.centos.pool.ntp.org | 2017-12-14 |
| 3.europe.pool.ntp.org | 2017-11-28 |
| 2.android.pool.ntp.org | 2017-11-22 |
| 3.debian.pool.ntp.org | 2017-11-11 |
| 1.debian.pool.ntp.org | 2017-10-19 |
| t1.hshh.org | 2017-10-12 |
| 1.europe.pool.ntp.org | 2017-09-28 |
| 0.europe.pool.ntp.org | 2017-09-20 |
| europe.pool.ntp.org | 2017-09-10 |