| Domain | Date |
| ntp.ncom.com | 2024-11-05 |
| 1.ntp.connect.fluke.com | 2024-10-29 |
| 1.coreos.pool.ntp.org | 2022-05-21 |
| 0.ubnt.pool.ntp.org | 2021-01-22 |
| 0.clearlinux.pool.ntp.org | 2020-11-17 |
| 3.suse.pool.ntp.org | 2020-11-05 |
| 3.centos.pool.ntp.org | 2020-10-30 |
| 3.us.pool.ntp.org | 2020-09-07 |