| Domain | Date |
| 3.datadog.pool.ntp.org | 2021-05-12 |
| 0.avaya.pool.ntp.org | 2021-02-24 |
| hu.pool.ntp.org | 2019-07-11 |
| ntp.sjtu.edu.cn | 2019-06-02 |
| 0.pool.ntp.org | 2019-05-23 |
| 1.europe.pool.ntp.org | 2019-05-17 |
| 0.hu.pool.ntp.org | 2019-05-16 |
| 1.hu.pool.ntp.org | 2019-05-09 |
| 2.pool.ntp.org | 2019-05-02 |
| 3.europe.pool.ntp.org | 2019-04-27 |
| 0.debian.pool.ntp.org | 2019-03-28 |
| 3.nettime.pool.ntp.org | 2019-03-01 |
| europe.pool.ntp.org | 2018-08-12 |
| 0.europe.pool.ntp.org | 2018-07-28 |
| 2.europe.pool.ntp.org | 2018-06-30 |
| t1.hshh.org | 2017-12-19 |
| 1.ubuntu.pool.ntp.org | 2017-11-19 |
| 2.centos.pool.ntp.org | 2017-11-13 |
| 1.pool.ntp.org | 2017-11-10 |
| 2.ubuntu.pool.ntp.org | 2017-11-05 |
| 2.debian.pool.ntp.org | 2017-10-24 |
| 0.ubuntu.pool.ntp.org | 2017-10-20 |
| 3.debian.pool.ntp.org | 2017-10-17 |
| 3.pool.ntp.org | 2017-10-01 |
| 1.debian.pool.ntp.org | 2017-09-30 |
| 3.ubuntu.pool.ntp.org | 2017-09-24 |
| t2.hshh.org | 2017-09-21 |
| 2.android.pool.ntp.org | 2017-09-18 |
| pool.ntp.org | 2017-09-18 |
| 1.centos.pool.ntp.org | 2017-09-07 |