| Domain | Date |
| 1.pool.ntp.org | 2019-03-31 |
| t1.hshh.org | 2019-03-31 |
| 0.amazon.pool.ntp.org | 2019-03-29 |
| 3.us.pool.ntp.org | 2019-03-21 |
| 0.us.pool.ntp.org | 2019-03-20 |
| 1.nettime.pool.ntp.org | 2019-03-16 |
| 2.pool.ntp.org | 2019-03-14 |
| time.musixmatch.com | 2019-03-12 |
| 0.nettime.pool.ntp.org | 2019-02-27 |
| 3.pool.ntp.org | 2019-02-04 |
| 0.pfsense.pool.ntp.org | 2018-12-14 |
| 0.openwrt.pool.ntp.org | 2018-10-02 |
| 0.north-america.pool.ntp.org | 2018-09-12 |
| 0.ubuntu.pool.ntp.org | 2018-09-11 |
| 3.amazon.pool.ntp.org | 2018-08-28 |
| 0.centos.pool.ntp.org | 2018-08-25 |
| 0.lede.pool.ntp.org | 2018-08-25 |
| 1.debian.pool.ntp.org | 2018-08-24 |
| 0.vizio.pool.ntp.org | 2018-08-13 |
| 1.coreos.pool.ntp.org | 2018-08-09 |
| 0.opensuse.pool.ntp.org | 2018-08-08 |
| 0.arch.pool.ntp.org | 2018-07-17 |
| 3.centos.pool.ntp.org | 2018-07-13 |
| 0.fedora.pool.ntp.org | 2018-06-29 |
| 0.bose.pool.ntp.org | 2018-06-14 |