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POOL.NTP.ORG


NTP POOL PROJECT

 * News
 * How do I use pool.ntp.org?
 * How do I join pool.ntp.org?
 * Information for vendors
 * The mailing lists
 * Additional links


TRANSLATIONS

 * Dansk
 * Deutsch
 * English
 * Español
 * Français
 * Italiano
 * Nederlands
 * Norsk (bokmål)
 * Norsk (nynorsk)
 * Português
 * Suomi
 * Svenska
 * Türkçe
 * Русский
 * српски srpski
 * Українська
 * हिन्दी
 * 한국어
 * 中文（简体）
 * 日本語
 * 
   (Can you translate?)

 * join the pool
 * use the pool
 * manage servers


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


INTRODUCTION


ACTIVE SERVERS

 * Africa 58
 * Asia 326
 * Europe 2985
 * North America 968
 * Oceania 150
 * South America 62
 * Global 4244
 * All Pool Servers 4526

As of 2021-12-26

The pool.ntp.org project is a big virtual cluster of timeservers providing
reliable easy to use NTP service for millions of clients.

The pool is being used by hundreds of millions of systems around the world. It's
the default "time server" for most of the major Linux distributions and many
networked appliances (see information for vendors).

Because of the large number of users we are in need of more servers. If you have
a server with a static IP address always available on the internet, please
consider adding it to the system.

The project is maintained and developed by Ask Bjørn Hansen and a great group of
contributors on the mailing lists. The source code for the system is available.

Hosting and bandwidth for the "hub" servers are provided by Packet and
NetActuate.

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NEWS

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 * September 6, 2019
   
   NTP POOL SERVERS ON KUBERNETES ON PACKET
   
   Packet is awesome.
   
   When we started planning our recent unplanned server move, we investigated
   options for having not one, but two sites, for the “hub” systems for the NTP
   Pool. With 4000 NTP servers and hundreds of millions of clients using the
   system, it really should be a given!
   
   Evaluating our options on a ridiculously short timeframe, Packet stood out as
   an interesting choice, though we were a little apprehensive at first if their
   setup would be too unusual compared to more familiar options.
   
   After a quick chat with some of the friendly staff at Packet, we were off to
   the races to see if we could get everything migrated in less than a week of
   nights and weekends. If we could, we’d be able to move the physical servers
   the following Sunday without downtime to any critical services, and get us
   closer to having proper redundancy.
   
   Working with the Packet system has been fascinating and extremely productive.
   Despite having done this sort of work for several decades, it was a surprise
   how mixing familiar capabilities, APIs and abstractions opened new ways for
   quickly building and managing powerful, reliable and scalable infrastructure.
   
   Continue Reading →

 * September 5, 2019
   
   NEW ACCOUNT FEATURES
   
   The beta site has been updated with new features for managing the accounts.
   Until now each server had to be associated with just one user login. In the
   new system servers are associated with an account that can have multiple user
   logins. If you can, please try it out and post bug reports or suggestions in
   the development forum or via email.
   
   Continue Reading →

 * August 27, 2019
   
   NTP POOL SERVERS HOSTED AT NETACTUATE
   
   The NTP Pool consists of (as of this writing) more than 4000 NTP servers
   provided by the community, about 40 DNS servers and a good handful of “hub
   servers” running the website, databases, monitoring (for NTP, DNS, etc) and a
   bunch of other software to keep the system going. This spring we learned that
   the facility the systems were in was being decommissioned and we needed to
   find other arrangements, quickly.
   
   Continue Reading →

 * April 5, 2019
   
   GPS ROLLOVER
   
   As you might have seen in the news or from the US CERT, there’s an internal
   counter in the GPS messages that will “rollover” this week. Poorly
   implemented GPS receivers might lose track of time because of this. Many
   servers in the NTP Pool are using GPS signals to set the time, either
   directly or indirectly from another server that listens for GPS signals. The
   expected impact on users of the NTP Pool is very little or none at all.
   
   Continue Reading →

 * 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.
   
   Continue Reading →

 * Older news...


LINKS

 * Terms of service
 * NTP home - the website about ntp
 * The NTP Pool DNS server uses GeoIP data from MaxMind to help choose an NTP
   server from the Pool.
 * Meinberg, makers of incredibly fine time server systems.
 * The Public servers abuse and the Fixing the NTP server abuse problem threads
   on the comp.protocols.time.ntp newsgroup have caused this project to be
   started.

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