pool.ntp.org: public ntp time server for everyone


Active Servers

As of 2019-03-25


世界中の数百万~数千万のシステムがこのプールを使用しています。 主要なLinuxディストリビューションや多くのネットワーク機器(ベンダ向け情報)の殆どではデフォルトのタイムサーバとしてこのプールを使用しています。

非常に多くのユーザが使用しているため、もっと多くのサーバが必要です。 もし常時インターネットに接続していて固定のグローバルIPアドレスを持つサーバをお持ちなら、システムに参加することを検討して下さい。

このプロジェクトはAsk Bjørn Hansenメーリングリストの多大な貢献によって開発・維持管理されています。 ソースコードは公開されています。

"ハブ"サーバのホスティングや帯域幅の情報は現在、DevelooperPhyber Communicationsによって提供されています。



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  • May 21, 2017

    How to Configure NTP for Use in the NTP Pool Project

    Daniel Ziegenberg wrote a tutorial for Digital Ocean on configuring NTP for the NTP Pool on Ubuntu.

    Oliver Nadler has another tutorial covering non-Ubuntu, too.

  • January 1, 2017

    NTP Pool Forum

    There’s a new forum for discussion related to the NTP Pool at community.ntppool.org. Please come join us. There are a couple interesting threads about the recent leap second and lots of empty space for your questions or suggestions. :-)

    The NTP Pool mailing lists are generously hosted on lists.ntp.org on the Network Time Foundation infrastructure. Those servers moved this summer and it’s been a bit of “rough seas” since. Over the summer hundreds of people got unsubscribed because mail deliveries were failing and the lists were bouncing all mails for a while in the second half of December.

    We’ll keep having the mailing list, too. In particular for people new to the project having us build out the new forum will be better (search, better access to archives, getting more mail in your email inbox is optional, etc).

    Happy new year!

  • December 19, 2016

    Excessive load on NTP servers

    Since last Tuesday some countries have seen an excessive number of queries to the NTP Pool.

    After much detective work on nanog (conclusion) and the #NTP IRC channel it was determined to be a buggy Snapchat app update.

    Hopefully the Snapchat developers will fix it soon (and sign up for a vendor zone!).

    (Yes, the first link is to a new forum).

  • November 29, 2016

    Equipment failure

    A network switch failed causing an outage for the management system and the NTP Pool website. The DNS and NTP services should only be minorly affected, even if the outage lasts a little while.

    I’ll update status website with updates.

  • November 4, 2016

    NTP Best Current Practices

    The IETF has published a new version of NTP Best Current Practices documenting learned best practices on how to run NTP servers and clients.

    If you know a little about the NTP protocol reading it will be a quick way to learn more about how it works “in the wild” (including on your own systems).

    Some of it is specific to the “reference” ntpd implementation, but much of it will apply to other clients or servers, too.

  • Older news...


Status | Comments and questions to Ask Bjørn Hansenask@develooper.com