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!!! NTP Servers in New Zealand There is a pool of servers at <tt>nz.pool.ntp.org</tt>, which provides [Round Robin DNS|RoundRobin] access to publicly accessible [NTP] servers that have agreed to be part of the pool. Many ISPs have NTP servers for their customers: * <tt>ntp.iprolink.co.nz</tt> * <tt>ntp.iconz.co.nz</tt> * <tt>tk1.ihug.co.nz to tk3.ihug.co.nz</tt> * <tt>time.paradise.net.nz</tt> Some universities have publicly accessible servers: * <tt>ntp.public.otago.ac.nz</tt> (Please notify before using) * <tt>ntp.massey.ac.nz</tt> For a long time [Waikato University|WaikatoUniversity] had public NTP servers. They are still available but no longer publicly accessible. !! Stratum 1 Servers in New Zealand You shouldn't synchronise to a stratum one server for your small network -- if everyone did that then the server would need too much bandwidth. The difference in accuracy between synching to a stratum 1 server and a lower stratum server is negligible! [more|http://list.waikato.ac.nz/pipermail/nznog/2001-October/003705.html] ! .nz Registry Services There are three stratum 1 NTP servers provided by .nz Registry Services (NZRS) for network operators based within New Zealand. [more|http://ntp.net.nz/] * <tt>s1.ntp.net.nz</tt> in Albany connected to [FX]. * <tt>s2.ntp.net.nz</tt> in Auckland connected to [ICONZ] and [APE]. * <tt>s3.ntp.net.nz</tt> in Wellington connected to [FX] and [WIX]. All three are Symmetricom S300 NTP servers, each connected to a differential GPS antenna on the roof and each with a rubidium oscillator to provide a stable clock in the event of an issue with the GPS signal. [more|http://ntp.net.nz/architecture/] ! The Measurement Standards Laboratory The standard for time in New Zealand is maintained by the [Measurement Standards Laboratory|http://msl.irl.cri.nz/], part of [Industrial Research Limited|http://irl.cri.nz/]. MSL runs several public NTP servers that are referenced to UTC(MSL). * <tt>msltime.irl.cri.nz</tt> * <tt>msltime1.irl.cri.nz</tt> * <tt>msltime2.irl.cri.nz</tt> They are FreeBSD-based servers that are directly connected to their master HP5071A caesium clock. [more|http://msl.irl.cri.nz/services/time-and-frequency/ntp-server-information] !! Stratum 1 Servers in other countries ! United States The US National Institute of Standards and Technology (NIST) operates several publicly accessable stratum 1 time servers on the pacific coast of the US. These servers are referenced to UTC(NIST) using the NIST Automated Computer Time Service (ACTS), a modem-based service established in 1988. [more|http://tf.nist.gov/tf-cgi/servers.cgi] * <tt>nist1.symmetricom.com</tt> San Jose, California * <tt>nist1-sj.ustiming.org</tt> San Jose, California * <tt>nist1-la.ustiming.org</tt> Los Angeles, California * <tt>nist1.aol-ca.symmetricom.com</tt> Mountain View, California The US Naval Observatory (USNO) operates several stratum 1 time servers from it's Alternate Master Clock Facility (AMCF) at [Schriever Air Force Base|http://en.wikipedia.org/wiki/Schriever_Air_Force_Base], [near Colorado Springs|http://maps.google.com/maps?q=schriever+afb], on the same site as the GPS Master Control Station. These servers are referenced to UTC(USNO). [more|http://tycho.usno.navy.mil/clocks.html] * <tt>tick.usnogps.navy.mil</tt> * <tt>tock.usnogps.navy.mil</tt> ! Australia The Australian National Measurement Institute (NMI) maintains the Australian time standard, UTC(AUS) using caesium and hydrogen maser standards. NMI maintains a number of NTP servers which are referenced to UTC(AUS). To use these servers, you need to register via email. [more|http://www.measurement.gov.au/Services/Pages/TimeandFrequencyDisseminationService.aspx] !! See also * [NTPNotes] * TimeSources * [Scientific study from 1999 on the topology of the country's main NTP servers | http://www.cosc.canterbury.ac.nz/research/reports/TechReps/1999/tr_9901.pdf ]
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