NTP Pool Time Servers
pool.ntp.org uses DNS round robin to make a random selection from a pool of time servers who have volunteered to be in the pool. This is often good enough for end-users. The minimal ntpd configuration file (e.g. /etc/ntpd.conf) for using pool.ntp.org is:
driftfile /var/lib/ntp/ntp.drift
server 0.pool.ntp.org
server 1.pool.ntp.org
server 2.pool.ntp.org
server pool.ntp.org
If you use only one pool server, we recommend you use the "bare" zone without a number, but if you use several, then use the numbered ones first.
Any questions about the pool.ntp.org server pool should be directed either to the timekeepers@fortytwo.ch mailing list or to the comp.protocols.time.ntp usenet newsgroup.
Time server operators are encouraged to visit the pool.ntp.org web-site to find out how they can join the NTP pool.
To make it possible to select a timeserver which is geographically close, we have sub-zones of pool.ntp.org. The "continent" ones are:
| Area: | HostName: |
|---|---|
| Worldwide | 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 |
There are also sub-zones for many countries. Click on your continent to see which country-zones are available there.
When using the by-country zones, be careful: some of them currently contain only one or two servers, so you are probably better off using either the zone of a nearby country, or using the continent or global zone (This is also valid if you live in a big country. For example, jp.pool.ntp.org has only one server!).
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