| Domain | Date |
| 2.pool.ntp.org | 2021-08-30 |
| 0.amazon.pool.ntp.org | 2021-07-25 |
| 3.datadog.pool.ntp.org | 2021-07-02 |
| 3.pool.ntp.org | 2021-06-28 |
| 0.resinio.pool.ntp.org | 2021-05-06 |
| 0.pfsense.pool.ntp.org | 2021-04-22 |
| 0.ubnt.pool.ntp.org | 2021-04-13 |
| 1.manjaro.pool.ntp.org | 2021-04-12 |
| 0.boot2docker.pool.ntp.org | 2021-04-10 |
| 3.rhel.pool.ntp.org | 2021-04-07 |
| 3.debian.pool.ntp.org | 2021-03-27 |
| 0.fedora.pool.ntp.org | 2021-03-15 |
| 0.pool.ntp.org | 2021-03-07 |
| 0.aerohive.pool.ntp.org | 2021-03-04 |
| 1.suse.pool.ntp.org | 2021-03-03 |
| 1.pool.ntp.org | 2021-02-28 |
| 1.linksys.pool.ntp.org | 2021-02-21 |