| Domain | Date |
| 3.centos.pool.ntp.org | 2021-04-21 |
| 0.amazon.pool.ntp.org | 2021-04-14 |
| 0.arch.pool.ntp.org | 2021-04-10 |
| 1.manjaro.pool.ntp.org | 2021-03-22 |
| 2.boot2docker.pool.ntp.org | 2021-03-20 |
| 3.pool.ntp.org | 2021-03-17 |
| 3.us.pool.ntp.org | 2021-02-16 |
| 0.clearlinux.pool.ntp.org | 2021-02-12 |
| 0.debian.pool.ntp.org | 2021-02-11 |
| 0.ubnt.pool.ntp.org | 2021-02-11 |
| 2.pool.ntp.org | 2021-02-10 |
| 1.cloudgenix.pool.ntp.org | 2021-02-09 |
| 0.pool.ntp.org | 2021-02-07 |
| 3.datadog.pool.ntp.org | 2021-02-07 |
| 0.pfsense.pool.ntp.org | 2021-02-06 |
| 3.suse.pool.ntp.org | 2021-02-06 |
| 0.rhel.pool.ntp.org | 2021-02-05 |
| 3.debian.pool.ntp.org | 2021-02-04 |
| pool.ntp.org | 2021-02-03 |