Stratum 1 NTP Network Time Servers In The UK

TimeTools is a UK-based manufacturer of NTP servers and precision timing equipment. Based on GPS and LF radio technology, our products provide a reliable, accurate and traceable source of time for your network. If synchronised time is important to your organisation, please consider one of our hardware network time server appliances.

 

Listed below is a selection of free public NTP servers available in the UK. The list is by no means exhaustive and has not been tested by TimeTools.

TimeTools cannot be held responsible for the availability or operation of the time servers listed on this page. We list a selection of links hoping that you may find them useful.

 

Stratum 1 NTP Time Servers

Hostname IP Address  DNS Location and Type
chronos.csr.net 194.35.252.7 Yes Computing Systems Research Ltd.
UKNTP V4 primary (Odetics GPS), Sun/Sparc Solaris 2.6
ntp.my-inbox.co.uk 81.168.77.149 No Falmouth, Cornwall, UK
NTP V4.2.0 primary (MSF Radio Clock Receiver), Trustix Linux

 

Stratum 2 NTP Time Servers

Hostname
IP Address DNS Location and Type
ntp2.sandvika.net 194.164.127.6 No Telehouse Europe, London E14
NTP V4 secondary Sun UltraSPARC Solaris 8
ntp2d.mcc.ac.uk 130.88.203.12 Yes University of Manchester, Manchester, England
NTP secondary (S2), SGI/Irix
ntp2c.mcc.ac.uk 130.88.200.4 Yes University of Manchester, Manchester, England
NTP secondary (S2), PC/FreeBSD
ntp.exnet.com 194.207.34.9 Yes ExNet Ltd, London, UK
NTP secondary (stratum 2), Sun-4/Unix
ntp1.sandvika.net 194.164.127.5 No Telehouse Europe, London E14
NTP V4 secondary Sun UltraSPARC Solaris 8
ntp.cis.strath.ac.uk Yes University of Strathclyde, Glasgow, Scotland
NTP V4 secondary
ntp0.sandvika.net 194.164.127.4 No Telehouse Europe, London E14
NTP V4 secondary Sun UltraSPARC Solaris 8
ntppub.le.ac.uk IPv4:
143.210.16.201
IPv6:
2001:630:306:10::c9
Yes University of Leicester, Leicester, England
NTP V4, stratum 2, GNU/Linux
Site:
https://first2know.net/
ntp.html
194.164.127.4 Yes Cambridge, England
IPv4, IPv6

 

If you wish to suggest a reference for consideration for inclusion on this page, please feel free to contact us.

The NTP Pool Project

The NTP pool project is a large virtual cluster of internet based network time servers. Pools of servers are located in many countries around the world. Clients can therefore synchronise to relatively local references, which reduces network latency and round-trip delays and provides a more robust source of time.

The pools are used by millions of systems around the world. Indeed, many standard Linux distributions and network appliances use the pool project servers as their default source of time.

The project is maintained and developed by Ask Bjørn Hansen and a group of contributors. Servers are volunteered to the pool. Access to pool project servers is available over the internet to time clients free of charge.

The United Kingdom Pool Zone

The UK pool zone is referenced by the following domain names:

0.uk.pool.ntp.org
1.uk.pool.ntp.org
2.uk.pool.ntp.org
3.uk.pool.ntp.org

The domain names point to a random set of UK based time servers that change every hour. By regularly changing sets, client load can be evenly distributed to prevent overloading of individual servers.

See http://www.pool.ntp.org/ and http://www.pool.ntp.org/zone/uk for more information.

Best Practice

If your business or organisation is dependent on an accurate source of time, you should consider implementing local hardware clock referenced time servers.

Hardware Clock NTP Server - TimeTools SR Series

Hardware Clock NTP Server – TimeTools SR Series

 

Internet based time references are often maintained by volunteers and there is no guarantee of accuracy or availability.

Additionally, NTP authentication and security mechanisms cannot be used in conjunction with internet based servers. Therefore their use may leave your systems open to abuse.

 

Related Information

We can also provide more information on Stratum 1 and 2 Internet based time references available in AustraliaGermany (Deutschland)France (Francais) and Netherlands (Nederland).

 

Related Products

Hardware network time server appliances
Sychronized NTP Clock Display Systems

 

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