| Domain | Date |
| 0.ntp.axsguard.com | 2025-05-25 |
| 1.europe.pool.ntp.org | 2021-11-01 |
| 0.pfsense.pool.ntp.org | 2021-02-11 |
| 0.amazon.pool.ntp.org | 2021-01-16 |
| 2.europe.pool.ntp.org | 2021-01-07 |
| 3.debian.pool.ntp.org | 2020-11-17 |
| 3.pool.ntp.org | 2020-11-12 |
| europe.pool.ntp.org | 2020-10-22 |
| pool.ntp.org | 2020-08-08 |
| 0.debian.pool.ntp.org | 2020-08-01 |
| 1.pool.ntp.org | 2020-07-27 |
| 2.pool.ntp.org | 2020-07-27 |
| 0.pool.ntp.org | 2020-07-24 |