| Domain | Date |
| 1.nettime.pool.ntp.org | 2019-09-08 |
| 0.nettime.pool.ntp.org | 2019-09-05 |
| 3.us.pool.ntp.org | 2019-09-03 |
| 0.us.pool.ntp.org | 2019-08-31 |
| t1.hshh.org | 2019-08-27 |
| 0.centos.pool.ntp.org | 2019-08-22 |
| 1.opnsense.pool.ntp.org | 2019-08-21 |
| 0.pokercopilot.pool.ntp.org | 2019-08-20 |
| 0.echo360.pool.ntp.org | 2019-08-12 |
| 0.pfsense.pool.ntp.org | 2019-08-05 |
| 0.nixos.pool.ntp.org | 2019-07-31 |
| 0.ubuntu.pool.ntp.org | 2019-07-28 |
| 1.openwrt.pool.ntp.org | 2019-07-27 |
| 0.rhel.pool.ntp.org | 2019-07-24 |
| 0.cn.pool.ntp.org | 2019-07-22 |
| 3.pool.ntp.org | 2019-07-22 |
| 0.amazon.pool.ntp.org | 2019-07-01 |
| time.musixmatch.com | 2019-06-04 |
| 1.pool.ntp.org | 2019-05-23 |
| t3.hshh.org | 2019-05-17 |
| 0.gentoo.pool.ntp.org | 2019-05-05 |
| 0.datadog.pool.ntp.org | 2019-04-06 |
| 2.pool.ntp.org | 2019-03-16 |
| 3.amazon.pool.ntp.org | 2019-03-15 |