NTP is a UDP based service which works on port number 123.It is recommended to use pool.ntp.org to find an NTP server.
All zones in All Pool Servers.
- Africa — africa.pool.ntp.org
- Antarctica — antarctica.pool.ntp.org
- Asia — asia.pool.ntp.org
- Europe — europe.pool.ntp.org
- North America — north-america.pool.ntp.org
- Oceania — oceania.pool.ntp.org
- South America — south-america.pool.ntp.org
Below is the command to check the ntp status on respective platforms.
A. Windows
w32tm /query /peers
B. Ubuntu
/etc/ntp.conf