| Domain | Date |
| 0.clearlinux.pool.ntp.org | 2021-01-11 |
| 0.amazon.pool.ntp.org | 2021-01-10 |
| 1.linksys.pool.ntp.org | 2020-11-19 |
| 3.ubuntu.pool.ntp.org | 2020-10-05 |
| 0.aerohive.pool.ntp.org | 2020-09-25 |
| 0.rhel.pool.ntp.org | 2020-09-19 |
| 3.rhel.pool.ntp.org | 2020-09-18 |
| 3.centos.pool.ntp.org | 2020-09-03 |
| 1.coreos.pool.ntp.org | 2020-08-19 |
| 1.pool.ntp.org | 2020-08-14 |
| 0.pool.ntp.org | 2020-08-12 |
| 3.pool.ntp.org | 2020-08-11 |
| 3.us.pool.ntp.org | 2020-08-07 |
| 0.pfsense.pool.ntp.org | 2020-08-02 |
| pool.ntp.org | 2020-05-22 |
| 0.ubnt.pool.ntp.org | 2020-05-14 |
| 2.pool.ntp.org | 2020-03-05 |