The pool.ntp.org project is a big virtual c.er of timeservers providing reliable easy to use NTP service for millions of clients. The pool is being used by millions or tens of millions of systems around the world..There are two levels, or tiers, of Network Time Protocol NTP time servers that are available on the Internet. The NTP is defined in Request for Comments RFC . The first level time servers are primarily intended to act as source time servers for second level time servers..In most cases it’s best to use pool.ntp.org to find an NTP server or .pool.ntp.org, .pool.ntp.org, etc if you need multiple server names . The system will try finding the closest available servers for you..Does it matter which NTP time server I choose in Windows? Whilst all NTP servers strive to maintain from Windows to resolve the best public NTP Server for .The table below lists the time servers used by the NIST Internet Time Service ITS . The table lists each server’s name, IP address, and location, organized geographi.y within the US from North to South and then from East to West..Fault tolerant configuration polling ! local time servers and localr. ntp server ntp server ntpr Low Stratum Campus Time Distribution Network. In the diagram below, a GPS or Cesium time source is provided at the central data center for the low stratum campus network..If you only point to a single NTP server it cannot failover to another NTP server until the DNS record’s Time to Live TTL expires. So even though north america.pool.ntp.org may be round robin the resolved IP will be cached and continued to be polled for NTP until the TTL expires…us.pool.ntp.org. .us.pool.ntp.org. .us.pool.ntp.org It is better to find one that is “network close”, as you don’t want to beigned a time server that is half the world away..Google’s turned on a set of public network time protocol NTP servers. You’ll find the servers at time.google.com which resolves to , a rather less pretty IP address than the Google uses for its public domain name system DNS servers..
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 emptye for your questions or suggestions..NTP server misuse and abuse covers a number of practices which cause damage or degradation to a Network Time Protocol NTP server, ranging from flooding it with traffic effectively a DDoS or violating the server’s access policy or the NTP .