r1 - 2005-07-15 - 12:26:25 - SteveKosteckeYou are here: NTP >  Servers Web > ServersSynchronizedByGPS
NTP users are strongly urged to take immediate action to ensure that their NTP daemons are not susceptible to being used in distributed denial-of-service (DDoS) attacks. Please also take this opportunity to defeat denial-of-service attacks by implementing Ingress and Egress filtering through BCP38.

ntp-4.2.8p15 was released on 23 June 2020. It addresses 1 medium-severity security issue in ntpd, and provides 13 non-security bugfixes over 4.2.8p13.

Please see the NTP Security Notice for vulnerability and mitigation details.

Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.

Servers Synchronized by GPS

Stratum: Sort ISO: Sort Hostname: Access: Sort Notify? Sort Contact: Sort Last Modified:
Inactive US DE mizbeaver.udel.edu OpenAccess No Dave Mills (mills@udel.edu) 2017-05-29T19:29:31Z
StratumOne US IN tick.cerias.purdue.edu RestrictedAccess Yes Gene Spafford (ntp-request@cerias.purdue.edu) 2017-06-07T16:01:05Z
StratumTwo US MN ns.nts.umn.edu OpenAccess Yes Networking & Telecommunications Services (nts@nts.umn.edu) 2017-12-13T22:50:38Z
Inactive US MN nss.nts.umn.edu OpenAccess Yes Networking & Telecommunications Services (nts@nts.umn.edu) 2020-01-31T21:25:47Z
Inactive US NH ntp.uhfradio.com OpenAccess No admin@uhfradio.com 2017-02-23T05:07:02Z
StratumTwo US VA ntp-2.vt.edu OpenAccess No ntp@cns.vt.edu 2017-02-09T14:18:46Z
StratumTwo US VA ntp-1.vt.edu OpenAccess No ntp@cns.vt.edu 2017-02-09T14:19:32Z
StratumTwo US VA ntp-3.vt.edu OpenAccess No ntp@cns.vt.edu 2017-02-09T14:20:59Z
StratumTwo US VA ntp-4.vt.edu OpenAccess No ntp@cns.vt.edu 2017-02-09T14:22:06Z
Inactive AU ntp0.coreng.com.au RestrictedAccess Yes Richard Perini (ntp@coreng.com.au) 2009-02-16T23:53:18Z
Inactive AU ntp0.cs.mu.OZ.AU OpenAccess No David Hornsby (ntp@cs.mu.OZ.AU) 2009-10-28T11:53:46Z
Inactive AU ntp1.cs.mu.OZ.AU OpenAccess No David Hornsby (ntp@cs.mu.OZ.AU) 2009-10-28T11:53:17Z
Inactive BR ntp1.rnp.br RestrictedAccess No ntp-admin@rnp.br 2017-06-02T23:35:59Z
StratumOne BR ntps1.pads.ufrj.br OpenAccess No Rafael Jorge Csura Szendrodi (szendro@pads.ufrj.br). 2019-02-07T19:49:38Z
StratumOne CA clock.uregina.ca RestrictedAccess Yes Mark Haidl (timekeeper@uregina.ca) 2004-09-25T02:40:20Z
Inactive CA subitaneous.cpsc.ucalgary.ca RestrictedAccess Yes Brad Arlt (timemaster@cpsc.ucalgary.ca) 2017-06-03T17:20:33Z
Inactive CH swisstime.ethz.ch ClosedAccess Yes Christoph Wicki (time@iis.ee.ethz.ch) 2012-11-29T08:04:06Z
StratumOne CL ntp.shoa.cl OpenAccess Yes Raul Vergara (rvergara@shoa.cl) 2004-09-25T02:54:33Z
StratumOne CZ ntp.cesnet.cz RestrictedAccess Yes Vladimir Smotlacha (ntp-admin@cesnet.cz) 2019-12-20T15:40:53Z
StratumOne DE ntp0.fau.de OpenAccess No The Timekeepers (time@informatik.uni-erlangen.de) 2019-12-20T22:49:15Z
StratumOne DE ntp2.fau.de OpenAccess No The Timekeepers (time@informatik.uni-erlangen.de) 2019-12-20T22:48:41Z
StratumOne DE ntps1-0.eecsit.tu-berlin.de OpenAccess No service@eecs.tu-berlin.de 2019-12-20T22:48:15Z
StratumOne DE ntps1-1.eecsit.tu-berlin.de OpenAccess No service@eecs.tu-berlin.de 2016-02-10T07:05:35Z
Inactive DK gps.freebsd.dk RestrictedAccess Yes Poul-Henning Kamp (phk@FreeBSD.org) 2017-06-03T17:45:03Z
StratumOne DK gps.dix.dk RestrictedAccess No Poul-Henning Kamp (phk@FreeBSD.org) 2004-09-25T14:25:19Z
Inactive FR canon.inria.fr ClosedAccess Yes ntp-adm@inria.fr 2017-02-03T18:12:41Z
Inactive FR chronos.cru.fr RestrictedAccess Yes timemaster@cru.fr 2019-12-07T20:46:17Z
Inactive FR ntp-sop.inria.fr ClosedAccess No ntp-adm@sophia.inria.fr, NTP Information 2022-04-19T12:23:33Z
Inactive FR ntp2.curie.fr RestrictedAccess No ntp-adm@curie.fr 2010-05-09T22:28:07Z
Inactive FR ntp1.curie.fr RestrictedAccess No ntp-adm@curie.fr 2010-05-09T22:27:34Z
Inactive FR ntp3.curie.fr RestrictedAccess No ntp-adm@curie.fr 2010-05-09T22:28:30Z
StratumOne IE ntp-galway.hea.net OpenAccess Yes ntp@it.nuigalway.ie 2004-09-25T14:41:50Z
Inactive NL ntp0.nl.net OpenAccess No beheer@nl.net 2017-06-26T14:16:39Z
StratumOne NL ntp0.nl.uu.net OpenAccess No ssm-service-desk@intl.verizon.com 2019-12-20T23:01:06Z
Inactive NL ntp1.nl.net OpenAccess No beheer@nl.net 2017-06-26T14:16:30Z
StratumOne NL ntp1.nl.uu.net OpenAccess No ssm-service-desk@intl.verizon.com 2017-06-26T13:23:11Z
Inactive NL ntp2.nl.net OpenAccess No beheer@nl.net 2017-06-26T14:17:13Z
Inactive NL ntp2.nl.uu.net OpenAccess No euso-help@uu.net 2017-06-26T14:17:03Z
StratumOne NO ntp.uit.no ClosedAccess Yes timekeeper@uit.no 2007-03-02T09:47:49Z
StratumOne NO time.service.uit.no RestrictedAccess Yes timekeeper@uit.no 2004-09-25T15:04:14Z
Inactive NZ clock1.canterbury.ac.nz RestrictedAccess Yes Pete Glassenbury (pete@cosc.canterbury.ac.nz) 2012-05-03T12:54:45Z
StratumOne PL ntp.certum.pl OpenAccess No Wojciech Slusarczyk (wslusarczyk@certum.pl) 2019-12-20T23:01:40Z
StratumOne SE time1.stupi.se OpenAccess No Peter Lothberg (roll@Stupi.SE) 2019-12-20T23:05:50Z
StratumOne SG jamtepat.singnet.com.sg RestrictedAccess Yes timekeeper@singnet.com.sg 2004-09-27T02:08:00Z
Inactive UK chronos.csr.net OpenAccess No C Buckingham (chrisb@csr.net) 2017-10-28T01:46:21Z
StratumOne SI goodtime.ijs.si RestrictedAccess Yes Mark Martinec (timekeeper@ijs.si) 2019-12-20T23:06:31Z
StratumOne US AK ntp.alaska.edu RestrictedAccess Yes Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2014-03-13T18:56:12Z
Inactive US CA clepsydra.dec.com OpenAccess No ntp-admin@wrl-mail.hpl.hp.com 2022-04-05T16:42:39Z
Inactive US CA clock.via.net OpenAccess Yes chronos@via.net 2017-05-29T19:23:12Z
Inactive US CA gpstime.trimble.com RestrictedAccess No Sven Dietrich (sven_dietrich@trimble.com) or zane_brady@trimble.com 2017-06-03T18:48:38Z
StratumOne US CA montpelier.ilan.caltech.edu RestrictedAccess Yes Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2014-03-13T04:29:07Z
Inactive US CA nist1.aol-ca.truetime.com OpenAccess No Judah Levine, jlevine@boulder.nist.gov, 303 492 7785 2017-05-29T17:20:22Z
Inactive US CA ntp-cup.external.hp.com OpenAccess No timer@cup.hp.com 2017-05-29T19:27:49Z
Inactive US CA ntp.nasa.gov ClosedAccess Yes clockmaster@ntp.nasa.gov 2017-06-02T21:45:23Z
Inactive US CA tick.gpsclock.com RestrictedAccess No Frank Mayhar (clock@gpsclock.com) 2017-06-03T18:55:01Z
StratumOne US CA tick.ucla.edu RestrictedAccess Yes Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2014-03-13T19:03:34Z
Inactive US CA timekeeper.isi.edu OpenAccess No Information Processing Center (action@isi.edu) 2017-10-28T01:53:40Z
Inactive US CA tock.gpsclock.com RestrictedAccess No Frank Mayhar (clock@gpsclock.com) 2017-06-03T18:49:53Z
Inactive US CA usno.hpl.hp.com RestrictedAccess Yes Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2022-04-05T16:43:41Z
StratumOne US DE ntp1.conectiv.com OpenAccess No John K. Scoggin (john.scoggin@pepcoholdings.com) 2009-03-27T16:23:28Z
StratumOne US DE ntp1.nss.udel.edu ClosedAccess Yes Ron Reisor (ron@udel.edu) 2004-09-27T03:11:00Z
Inactive US DE rackety.udel.edu OpenAccess No Dave Mills (mills@udel.edu) 2017-02-21T05:18:23Z
StratumOne US FL ntp-s1.cise.ufl.edu RestrictedAccess No Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2015-10-23T16:45:13Z
StratumOne US GA navobs1.gatech.edu RestrictedAccess No Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2015-10-23T16:45:43Z
StratumOne US HI time.mhpcc.hpc.mil RestrictedAccess Yes Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil); MHPCC NTP administrator (ntp@mhpcc.edu) 2014-03-14T14:09:30Z
StratumOne US IL truechimer.cites.illinois.edu ClosedAccess Yes Debbie Fligor (fligor@illinois.edu) 2020-07-24T22:09:37Z
StratumOne US MA bonehed.lcs.mit.edu OpenAccess Yes Robert Morris (rtm@lcs.mit.edu) 2004-09-27T03:31:46Z
Inactive US MA tick.mit.edu RestrictedAccess Yes Rich Schmidt (res@tuttle.usno.navy.mil) 2009-11-16T15:32:49Z
Inactive US MA timeserver.cs.umb.edu RestrictedAccess No Rick Martin (ntp@cs.umb.edu) 2008-10-17T16:55:13Z
StratumOne US MA time.keneli.org OpenAccess No Contact: Kenneth Baker (bakerkj@umich.edu) 2004-09-27T03:38:00Z
StratumOne US MO navobs1.wustl.edu RestrictedAccess No Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2015-10-23T16:45:56Z
Inactive US NC terrapin.csc.ncsu.edu OpenAccess No Sven Dietrich, NCSU (sven@terrapin.csc.ncsu.edu) 2017-05-29T19:34:18Z
StratumOne US OK now.okstate.edu RestrictedAccess No Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2017-06-03T19:22:02Z
StratumOne US PA gps1.tns.its.psu.edu ClosedAccess Yes John Balogh (JDB+NTP@psu.edu) 2017-06-03T19:23:29Z
StratumOne US TX tick.uh.edu RestrictedAccess No Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2015-10-23T16:46:03Z
StratumTwo US UT time.xmission.com OpenAccess No ntp@xmission.com 2021-11-19T16:36:04Z
Inactive US VA nist1.aol-va.truetime.com OpenAccess No Judah Levine, jlevine@boulder.nist.gov, 303 492 7785 2012-09-26T16:56:11Z
Inactive US WA bigben.cac.washington.edu ClosedAccess Yes UW IT, ueteam@uw.edu 2015-10-13T16:49:34Z
StratumOne US WI ben.cs.wisc.edu RestrictedAccess Yes John Perkins (ntp-admin@cs.wisc.edu) 2017-06-05T22:26:21Z
Inactive US AZ father-time.t-bird.edu RestrictedAccess Yes Tom Ford, tom.ford@thunderbird.edu 2015-05-04T17:46:09Z
Inactive AU please.enquire ClosedAccess Yes time@measurement.gov.au 2009-10-28T11:52:06Z
Inactive US CA t3.timegps.net OpenAccess No Skip Newhall (x@sn.to); see https://sn.to 2010-12-22T19:17:22Z
Inactive NL ntp.remco.org OpenAccess Yes Dr. R. den Besten ntp at remco.org 2017-10-28T01:30:03Z
Inactive NL ntp6.remco.org OpenAccess Yes Dr. R. den Besten ntp@remco.org 2017-10-28T01:30:28Z
Inactive US CA t2.timegps.net OpenAccess No Skip Newhall (x@sn.to); see https://sn.to 2017-10-28T01:55:31Z
Inactive US CA t1.timegps.net OpenAccess No Skip Newhall (x@sn.to); see https://sn.to 2017-10-28T01:55:37Z
StratumOne US NY time.zia.io OpenAccess Yes John Klos (jklos @netbsd.org) 2020-05-27T02:33:12Z
Inactive US CA t4.timegps.net OpenAccess No Skip Newhall (x@sn.to); see https://sn.to 2010-12-22T19:16:43Z
StratumOne RO ntp1.usv.ro ClosedAccess Yes Eugen COCA - https://www.ecoca.ro 2019-12-08T10:19:49Z
Inactive US FL ntp.myfloridacity.us OpenAccess Yes administrator@myfloridacity.us Al 2019-12-24T21:41:12Z
StratumOne RO ntp2.usv.ro ClosedAccess Yes Eugen COCA - https://www.ecoca.ro 2019-12-08T10:20:21Z
StratumOne RO ntp3.usv.ro ClosedAccess Yes Eugen COCA - https://www.ecoca.ro 2019-12-08T10:18:31Z
Inactive RU ntp.vld.ru OpenAccess No ntpboss_-_-_vld.ru 2017-02-23T00:36:26Z
StratumOne RU ntp.scx.ru ClosedAccess Yes Victor Gerasimov ntpboss_-_-_vld.ru ( replace_-_-_ by @ ) 2006-06-19T03:33:45Z
Inactive KR ntp.xbsd.kr OpenAccess No time@xbsd.kr 2020-08-30T10:50:29Z
Inactive SE timehost.lysator.liu.se OpenAccess No Bjorn Gabrielsson <bg@lysator.liu.se> 2017-05-29T19:03:37Z
StratumOne SI ntp.mostovna.com OpenAccess Yes Luka Manojlovic (luka@mostovna.com) 2019-12-20T23:20:32Z
Inactive US CA gps.layer42.net OpenAccess No Steve Rubin <ser@layer42.net> 2019-12-20T21:45:41Z
StratumOne CA ntp.cm.nu RestrictedAccess Yes timemaster@cm.nu 2007-02-14T13:48:03Z
StratumTwo NO ntp-public.uit.no OpenAccess Yes timekeeper@uit.no 2008-03-25T13:09:22Z
Inactive US MA ntp0.broadinstitute.org OpenAccess No timekeeper@broad.mit.edu 2010-10-26T18:23:44Z
StratumOne DE ntps1-0.fh-mainz.de RestrictedAccess No Bernd Schmitz (timekeeper@fh-mainz.de) 2012-11-30T09:15:29Z
StratumOne ES ntp.i2t.ehu.eus OpenAccess No Christian Pinedo (christian[dot]pinedo[aatt]ehu[dott]eus), Jon Matías (jon[dot]matias[aatt]ehu[dott]es), Eduardo Jacob (eduardo[dot]jacob[aatt]ehu[dott]eus) 2015-06-12T14:26:53Z
StratumOne CZ ntp.nic.cz OpenAccess No noc@nic.cz 2014-09-18T15:36:49Z
StratumOne PL ntp.ntp-servers.com OpenAccess No support (at) elproma (dot) com (dot) pl 2019-12-20T18:50:47Z
Inactive US WA time.dennishilberg.com RestrictedAccess Yes Dennis Hilberg, Jr. - timekeeper at dennishilberg dot com 2010-09-01T03:00:42Z
Inactive US WA tick.mtnlion.com OpenAccess No bob@mtnlion.com 2017-05-29T19:54:00Z
StratumOne US DE pogo.udel.edu RestrictedAccess No David L. Mills (mills@udel.edu) 2013-05-31T23:56:53Z
Inactive PL ntp1.net.icm.edu.pl OpenAccess Yes info@core.icm.edu.pl 2014-01-20T22:28:38Z
StratumTwo BR b.ntp.br OpenAccess No ntp@nic.br or Antonio M. Moreiras moreiras@nic.br 2010-04-16T22:45:26Z
StratumTwo BR c.ntp.br OpenAccess No ntp@nic.br or Antonio M. Moreiras moreiras@nic.br 2010-04-16T22:46:59Z
StratumTwo BR a.ntp.br OpenAccess No ntp@nic.br or Antonio M. Moreiras moreiras@nic.br 2010-04-16T22:46:03Z
Inactive US PA ac-ntp1.net.cmu.edu OpenAccess No netdev@andrew.cmu.edu 2017-09-11T08:29:43Z
Inactive US PA ac-ntp2.net.cmu.edu OpenAccess No netdev@andrew.cmu.edu 2017-09-11T08:30:17Z
Inactive US PA ac-ntp0.net.cmu.edu OpenAccess No netdev@andrew.cmu.edu 2017-09-11T08:30:47Z
Inactive AU ntp.tbpl.com.au OpenAccess No tbpl@tbpl.com.au 2019-12-20T05:09:58Z
StratumTwo RO ntp0.chroot.ro OpenAccess Yes Bogdan-Stefan Rotariu -> bogdan[at]rotariu[dot]ro 2017-02-08T18:21:54Z
StratumTwo RO ntp1.chroot.ro OpenAccess Yes Bogdan-Stefan Rotariu -> bogdan[at]rotariu[dot]ro 2017-02-08T18:21:45Z
StratumOne RO ntp0.dooh.ro RestrictedAccess Yes Bogdan-Stefan Rotariu -> bogdan[at]rotariu[dot]ro 2008-06-25T19:58:15Z
Inactive AT asynchronos.iiss.at OpenAccess Yes Patrick Loschmidt (ntp@iiss.at) 2017-05-29T18:33:32Z
Inactive NL ntp.edge.tillo.ch OpenAccess No Martino Dell'Ambrogio (tillo@tillo.ch) 2017-02-08T18:17:07Z
StratumOne UA ntp.time.in.ua OpenAccess Yes Alexander Andriychuk 2011-08-27T20:08:11Z
Inactive US KY ntp1.kyiix.net OpenAccess No noc@kyiix.net 2009-09-17T12:49:21Z
Inactive US KY ntp2.kyiix.net OpenAccess No noc@kyiix.net 2009-09-17T12:49:39Z
Inactive MX tiempo.promomedios.com OpenAccess No Fernando Hernandez (ntp@promomedios.com) 2017-10-28T01:19:56Z
Inactive US WA ntp.lucier.us OpenAccess Yes "NTP Administrator" clock (at) lucier dot us 2009-09-23T21:11:17Z
StratumOne US WI ntp1.netwrx1.com OpenAccess Yes George R. Kasica (gkasica@netwrx1.com) 2021-02-09T02:22:13Z
StratumOne US WI ntp2.netwrx1.com OpenAccess Yes George R. Kasica (gkasica@netwrx1.com) 2021-02-09T02:23:24Z
Inactive NL ntp2.remco.org OpenAccess Yes Dr. R. den Besten ntp at remco.org 2012-01-12T04:27:41Z
StratumOne RU ntp4.vniiftri.ru OpenAccess Yes Andrey Bertcov noc@vniiftri.ru 2020-03-19T09:28:46Z
StratumOne PL time.coi.pw.edu.pl OpenAccess No Marek Majchrowski, Emil Grochocki, ntp@coi.pw.edu.pl 2009-02-03T20:28:25Z
StratumOne AT ts2.aco.net OpenAccess No domain-admin@univie.ac.at 2009-07-17T11:01:08Z
Inactive UK ntp0.jonatkins.com RestrictedAccess No n/a 2015-10-12T12:55:18Z
StratumOne RU ntp.arity.ru ClosedAccess Yes ntp@arity.ru 2019-07-12T09:15:56Z
StratumOne MX sesku.planeacion.net OpenAccess Yes Roberto Carlos Barriga Granados, rcarlos@planeacion.net, +52 (443) 3167256 2019-04-11T06:53:03Z
StratumOne DE time.fu-berlin.de OpenAccess No Holger Weiß (time@fu-berlin.de) 2013-06-12T19:30:14Z
StratumOne DE zeit.fu-berlin.de OpenAccess No Holger Weiß (zeit@fu-berlin.de) 2013-06-12T19:28:15Z
Inactive CH ntp.exion.tillo.ch OpenAccess No Martino Dell'Ambrogio (tillo@tillo.ch) 2019-12-07T19:26:28Z
StratumOne BG ntp.bsdbg.net OpenAccess No vlado[ at ]bsdbg[ dot ]net 2019-12-20T19:22:21Z
Inactive US OR clock.danplanet.com OpenAccess No Dan, clock@danplanet.com 2017-05-29T19:35:51Z
StratumOne UK ntp-1.cslw.coreservers.uk RestrictedAccess Yes timelords @ comgw.co.uk 2020-07-30T22:55:18Z
StratumOne NZ ntp1.ntp.net.nz RestrictedAccess No support@nzrs.net.nz 2017-12-19T00:27:45Z
StratumOne AM ntp.amnic.net OpenAccess No Hrant Dadivanyan <ran@psg.com> 2014-10-08T07:56:13Z
Inactive US MA time.falk.us RestrictedAccess No al {at-sign} falk.us 2019-12-18T21:12:31Z
StratumOne RU ntp3.stratum1.ru OpenAccess Yes HSDN Project - https://www.hsdn.org (info@hsdn.org) 2021-12-24T15:02:27Z
StratumOne RU ntp1.stratum1.ru OpenAccess Yes HSDN Project - https://www.hsdn.org (info@hsdn.org) 2021-12-24T15:02:44Z
StratumOne RU ntp2.stratum1.ru OpenAccess Yes HSDN Project - https://www.hsdn.org (info@hsdn.org) 2021-12-20T23:37:25Z
StratumOne RU ntp.sonur.ru OpenAccess No Vladimir Khramov (bad@sonur.ru) 2013-05-09T07:20:02Z
StratumOne DK h01.s1.ntp.sonnit.dk RestrictedAccess Yes Gorm J. Siiger (gjs at sonnit dk) 2019-12-10T20:19:16Z
StratumOne GR chronos.asda.gr OpenAccess No Lefteris Tsintjelis ; https://www.asda.gr ; ntp@asda.gr 2020-10-09T01:27:20Z
StratumOne CH ntp0.as34288.net OpenAccess Yes noc@as34288.net 2012-06-18T16:07:02Z
StratumOne CH ntp1.as34288.net OpenAccess Yes noc@as34288.net 2012-06-18T16:02:43Z
StratumOne BR gps.ntp.br OpenAccess No ntp@nic.br or Antonio M. Moreiras moreiras@nic.br 2019-12-20T19:29:03Z
Inactive US CA charles.fehmuhnist.net RestrictedAccess Yes Irene Meyer [irene@fehmuhnist.net] 2011-03-30T12:02:45Z
Inactive UK ntp.nettecltd.com RestrictedAccess Yes time @ nettecltd.com 2011-03-22T12:08:17Z
StratumOne UK On request RestrictedAccess Yes admin@lavendercam.net 2016-10-08T10:10:01Z
StratumOne US NY gnomon.cc.columbia.edu RestrictedAccess No ColumbiaTimekeeper 2015-10-13T20:47:21Z
StratumOne SA time1.isu.net.sa OpenAccess Yes KACST/ISU Helpdesk (helpdesk@isu.net.sa) 2017-05-17T07:00:09Z
StratumOne SA time2.isu.net.sa OpenAccess Yes KACST/ISU Helpdesk (helpdesk@isu.net.sa) 2017-05-17T06:59:26Z
StratumOne UA ntp.exact-time.org OpenAccess Yes Alexander Andriychuk 2011-08-26T10:37:27Z
Inactive US MI atlas.digitalenigma.net RestrictedAccess No Luke Militello; Luke@DigitalEnigma.net 2017-06-03T19:17:13Z
Inactive US MI pbody.digitalenigma.net RestrictedAccess No Luke Militello; Luke@DigitalEnigma.net 2017-06-03T19:17:01Z
StratumOne RU ntp2.aas.ru OpenAccess No Network Operations (noc at aas dot ru) 2018-01-12T03:40:48Z
Inactive RU ntp1.aas.ru OpenAccess No Network Operations (noc at aas dot ru) 2017-06-06T11:16:36Z
StratumOne RU ntp.aas.ru OpenAccess No Network Operations (noc at aas dot ru) 2018-01-12T03:39:57Z
Inactive de ntp1.bliesekow.de OpenAccess No Fabian Foerster <fabian.foerster@bliesekow.de> 2011-11-21T17:12:31Z
StratumOne RU ntp.ix.ru OpenAccess No MSK-IX https://www.msk-ix.ru (noc@ix.ru) 2014-05-07T09:07:48Z
Inactive SI ntp.bozoncek.si.eu.org OpenAccess No bozoncek@gmail.com 2017-05-29T19:11:32Z
Inactive DK ntp2v6.unixnet.dk OpenAccess Yes mojo@unixnet.dk 2019-12-07T20:42:09Z
StratumTwo US OR tick.eoni.com OpenAccess Yes Jeff Crews noc@eoni.com 2018-09-01T23:25:24Z
StratumTwo US OR tock.eoni.com OpenAccess Yes Jeff Crews noc@eoni.com 2018-09-01T23:25:38Z
StratumTwo BE ntp.verbert.be OpenAccess No ntp@verbert.be 2020-11-27T10:23:38Z
StratumOne US CA gpstime.la-archdiocese.net OpenAccess No ntp-admin@la-archdiocese.org 2012-03-02T22:38:27Z
Inactive RU stratum1.net OpenAccess No https://stratum1.net Vladislav Ross <vladislav.ross@gmail.com> 2017-05-29T18:23:05Z
StratumOne HK time.hko.hk OpenAccess No 29268433 2019-12-20T19:42:44Z
StratumOne RU ntp4.stratum1.ru OpenAccess Yes HSDN Project - https://www.hsdn.org (info@hsdn.org) 2021-12-24T15:02:13Z
Inactive AM time.markosyan.info OpenAccess No ludwig@markosyan.info 2017-05-29T18:26:42Z
Inactive DK fw2.unixnet.dk OpenAccess Yes mojo@unixnet.dk 2019-12-07T20:42:01Z
Inactive RU ntp.deman.ru OpenAccess Yes Michael Demidoff hostmaster@deman.ru 2019-12-07T21:29:33Z
StratumOne IS aion.isnic.is RestrictedAccess No ISNIC System Administrator (adm@isnic.is) 2019-12-20T19:51:00Z
StratumTwo CA time.cloudsingularity.net OpenAccess No time@cloudsingularity.net 2019-07-17T19:00:18Z
StratumOne CN ntp.neu.edu.cn OpenAccess Yes Zhankao WEN (wzk@synet.edu.cn) 2013-08-08T02:08:59Z
Inactive BG time.voodoonet.biz OpenAccess Yes VoodooServ@mail.bg 2017-02-09T05:01:20Z
Inactive GB ntp0.catn.com OpenAccess No mirrors@fubra.com 2021-11-19T15:13:57Z
StratumOne EE clock1.infonet.ee OpenAccess Yes clocksmith@infonet.ee 2013-07-26T21:14:42Z
StratumOne EE clock2.infonet.ee OpenAccess Yes clocksmith@infonet.ee 2013-07-26T21:14:26Z
StratumOne SG ntpmon.dcs1.biz OpenAccess Yes ghane0@gmail.com 2019-12-20T20:20:53Z
Inactive MX ntp.lcf.mx OpenAccess No Soporte técnico/Tech Support: tiempo@lcf.mx 2017-10-28T01:28:21Z
Inactive DK ntp.voje.dk RestrictedAccess Yes Robert Voje (fname at lname dot country) 2017-06-03T17:42:33Z
StratumOne CH ntp.freestone.net OpenAccess Yes noc@freestone.net 2013-12-26T20:34:04Z
StratumOne US OK OpenAccess No Daniel.Quick+ntp@gmail.com 2022-02-27T21:12:10Z
Inactive DE ntp01.hoberg.ch OpenAccess No noc@hoberg.cc 2019-12-20T20:26:06Z
Inactive NL ntp.bbln.org OpenAccess No Tim (noc AT bbln DOT org) 2017-02-21T05:08:49Z
Inactive NL ntp.ring.nlnog.net OpenAccess No Job Snijders <job@instituut.net> 2017-12-12T15:13:22Z
Inactive US OH navobs1.oar.net RestrictedAccess No Jeffrey Prillaman, US Naval Observatory (jeffrey.prillaman@usno.navy.mil) 2017-10-30T22:39:35Z
StratumOne BG ntp.svilengrad.eu OpenAccess No nikolay@svilengrad.eu 2018-06-04T05:14:54Z
Inactive RU ntp.ix.ru OpenAccess No MSK-IX https://www.spb-ix.ru (noc@ix.ru) 2019-12-20T20:34:01Z
StratumOne RU ntp.ix.ru OpenAccess No MSK-IX https://www.nsk-ix.ru (noc@ix.ru) 2014-05-07T09:05:46Z
StratumOne US IA tick.usshc.com OpenAccess No jpasker at usshc dot com 2014-07-30T21:22:30Z
Inactive NO larsdebruin.net OpenAccess Yes admin@larsdebruin.net 2017-05-29T18:10:19Z
StratumOne FR ntp.neel.ch OpenAccess Yes david+ntppool@neel.ch 2022-01-18T09:06:17Z
StratumOne RU ojab.ru OpenAccess No ojab@ojab.ru 2021-06-25T10:30:17Z
StratumOne US IA tock.usshc.com OpenAccess No jpasker at usshc dot com 2019-12-20T20:34:58Z
StratumOne US NC level1e.cs.unc.edu OpenAccess Yes time-admin@cs.unc.edu 2017-02-10T21:44:08Z
StratumOne US NC level1f.cs.unc.edu OpenAccess Yes time-admin@cs.unc.edu 2017-02-10T21:44:21Z
StratumOne US NC level1g.cs.unc.edu OpenAccess Yes time-admin@cs.unc.edu 2017-02-10T21:44:35Z
StratumOne US NC level1h.cs.unc.edu OpenAccess Yes time-admin@cs.unc.edu 2017-02-10T21:44:47Z
StratumTwo FR ntp.neel.ch OpenAccess Yes david+ntppool@neel.ch 2014-09-09T14:54:15Z
Inactive DK ntp.algon.dk OpenAccess Yes niels@algon.dk 2017-02-08T06:01:33Z
StratumOne US OH ntp1.versadns.com OpenAccess Yes helpdesk@eastmaintech.com 2019-09-08T02:55:01Z
StratumTwo US OH ntp2a.versadns.com OpenAccess Yes helpdesk@eastmaintech.com 2019-09-08T02:59:20Z
StratumTwo CH mirror.tillo.ch OpenAccess No Martino Dell'Ambrogio (tillo@tillo.ch) 2019-12-07T18:52:36Z
StratumOne KZ ntp.nic.kz OpenAccess Yes noc@nic.kz 2019-12-20T21:25:33Z
StratumOne KZ ntp.nic.kz OpenAccess Yes noc@nic.kz 2019-03-19T09:02:28Z
StratumOne IE gatekeeper.dhco.org RestrictedAccess Yes ron.hahn@dhco.org 2016-08-25T08:27:27Z
StratumOne AM ntp.amnic.net OpenAccess No Hrant Dadivanyan <ran@psg.com> 2015-01-29T23:31:16Z
Inactive US MD sip.monzil.com OpenAccess No ntp@monzil.com 2020-08-04T16:38:21Z
StratumOne PL ntp.fizyka.umk.pl OpenAccess No Michal Zawada, ntp (at) fizyka.umk.pl 2015-03-31T08:52:58Z
StratumOne UA ifconfig.com.ua OpenAccess No admin@ifconfig.com.ua 2016-03-17T11:22:17Z
StratumTwo BG ntp.svilengrad.eu OpenAccess No nikolay@svilengrad.eu 2018-06-04T05:14:17Z
Inactive ES ntp.redimadrid.es OpenAccess No noc@redimadrid.es 2017-10-27T22:23:36Z
StratumOne LT ntp1.laukas.lt OpenAccess Yes dalius@lapenas.lt 2021-08-02T20:36:49Z
StratumTwo NL ntp.looney.network OpenAccess No ntp@vandersanden.email 2021-11-16T08:26:55Z
StratumOne NL time.t3kkit.com OpenAccess No rick_b@dds.nl 2016-06-10T07:41:52Z
StratumTwo CA time1.mbix.ca OpenAccess Yes jonathan.stewart@gmail.com 2019-12-20T15:36:21Z
Inactive HU ntp.atomki.mta.hu OpenAccess No debreczeni.attila@atomki.mta.hu 2019-12-07T20:47:16Z
StratumOne US UT time.nc7j.com OpenAccess Yes m.matthew.george@gmail.com 2021-05-15T14:36:20Z
StratumTwo US SD mail.mountaintop.org OpenAccess Yes troy@mountaintop.org 2016-05-13T00:11:25Z
StratumOne US NY rjbeilstein.org OpenAccess Yes rjbeilstein@verizon.net 2016-06-03T14:10:21Z
StratumTwo UA 0x21h.net OpenAccess Yes tb0hdan@gmail.com 2019-12-19T13:39:34Z
StratumOne US CO time.rain.bz OpenAccess No timekeeper@rain.bz 2019-12-18T20:36:18Z
StratumTwo US WI ntp4.netwrx1.com OpenAccess Yes George R. Kasica (gkasica@netwrx1.com) 2021-02-09T02:24:55Z
Inactive US WI ntp5.netwrx1.com OpenAccess Yes George R. Kasica (gkasica@netwrx1.com) 2018-06-17T02:36:38Z
StratumOne UK timekeeper.webwiz.net OpenAccess Yes ntppool [at] webwiz.net 2022-03-11T10:23:54Z
StratumTwo AT entp1.iiasa.ac.at OpenAccess No time.admin@iiasa.ac.at 2017-03-29T09:44:42Z
StratumTwo AT entp2.iiasa.ac.at OpenAccess No time.admin@iiasa.ac.at 2019-12-20T14:44:58Z
StratumOne DK ntp01.algon.dk OpenAccess Yes niels@algon.dk 2017-05-03T21:33:46Z
StratumOne US IL ntp-kgbg.jetairinc.com OpenAccess No admin@jetairinc.com 2017-05-11T19:35:55Z
StratumOne US MO time.missouri.edu RestrictedAccess Yes mudoitcsglinux@missouri.edu 2017-06-05T13:53:06Z
StratumOne NZ ntp2.ntp.net.nz RestrictedAccess No support@nzrs.net.nz 2017-12-19T00:32:11Z
StratumOne NZ ntp3.ntp.net.nz RestrictedAccess No support@nzrs.net.nz 2017-12-19T00:32:37Z
StratumOne NZ ntp4.ntp.net.nz RestrictedAccess No support@nzrs.net.nz 2017-12-19T00:32:58Z
StratumOne US MN hc243.ips.paulbunyan.net OpenAccess No jeremyjvogel@protonmail.com 2018-06-27T01:27:59Z
StratumOne US CA ntpsec.anastrophe.com OpenAccess No ntp@anastrophe.com 2022-05-10T21:53:10Z
Inactive SE sk0mq.dstargateway.org OpenAccess Yes johan@netwinder.nu 2019-12-07T21:34:54Z
StratumOne US CT wan0.chc.us.vyvygen.com ClosedAccess No Abuzer Rafey <arafey@vyvygen.com> 2017-08-30T03:49:10Z
Inactive AT ntp.vlbgit.info OpenAccess No ntp@fabian.friesenecker.info 2019-12-07T19:50:03Z
StratumOne RU ntp00.nsk.linux-ia64.org OpenAccess No hostmaster+ntp@linux-ia64.org 2017-09-26T23:21:41Z
Inactive RU ntp01.nsk.linux-ia64.org OpenAccess No hostmaster+ntp@linux-ia64.org 2019-12-07T21:31:12Z
StratumTwo DK ntp.oz1tmm.dk OpenAccess Yes Martin Møller (ntpd@oz1tmm.dk) 2020-09-02T16:12:01Z
Inactive DE ntp.wirsol.cloud OpenAccess Yes it@wirsol.com 2021-11-19T05:36:53Z
StratumOne US FL time-a.bbnx.net OpenAccess No Ryan Krenzischek (ryan@bbnx.net) +1 (305) 924 0028 2020-08-11T06:35:57Z
StratumOne GB ntp1.speedwelshpool.com OpenAccess Yes admin @ speedwelshpool . com 2017-11-12T12:49:31Z
StratumOne GB ntp0.uos.ac.uk OpenAccess No itservicedesk@uos.ac.uk 2018-01-10T12:07:41Z
StratumOne US IN ntp2.indypl.org RestrictedAccess Yes Peter Pauly (dnsadmin@indypl.org) 2018-01-30T16:39:44Z
StratumOne US FL time-b.bbnx.net OpenAccess No Ryan Krenzischek (ryan@bbnx.net) +1 (305) 924 0028 2020-08-11T06:34:28Z
StratumOne DK ntp1.itcompliance.dk RestrictedAccess Yes thomas@itcompliance.dk 2022-05-18T06:42:19Z
Inactive DK ntp2.itcompliance.dk OpenAccess Yes thomas@itcompliance.dk 2021-06-14T16:08:54Z
StratumOne US IN ntp3.indypl.org RestrictedAccess Yes Peter Pauly (dnsadmin@indypl.org) 2018-03-14T13:11:47Z
StratumOne HU ntp.sinuslink.hu OpenAccess No mayer.karoly@sinuslink.hu 2018-06-10T22:24:57Z
Inactive KR time0.epichouse.net OpenAccess Yes ntp@epichouse.net 2018-07-31T07:01:23Z
StratumOne PL rflab.pl OpenAccess Yes Marcin Trzaska marcin@rflab.pl 2018-07-25T21:20:48Z
StratumOne US GA navobs1.gatech.edu OpenAccess No Jeffrey Prillaman, US Naval Observatory 2018-08-06T02:06:47Z
StratumOne AU time.9r.com.au OpenAccess No xrobau@gmail.com 2020-01-01T15:06:12Z
Inactive IT stratum.ga OpenAccess Yes vincenzo.venuto@stratum.ga 2019-12-07T16:22:41Z
Inactive US CA time-a.pts0.net OpenAccess No nessenj@jimsoffice.org 2020-05-14T18:58:12Z
Inactive AU time.lukeacl.com OpenAccess No Luke Cashion-Lozell <hello@lukeacl.com> 2019-12-07T19:52:12Z
Inactive us w2aiq.ddns.net OpenAccess No oilpan@optonline.net 2019-12-07T22:03:41Z
Inactive US w2aiq.ddns.net OpenAccess No oilpan@optonline.net 2019-12-07T21:40:57Z
Inactive US NJ w2aiq.ddns.net OpenAccess No oilpan@optonline.net 2019-12-07T22:03:16Z
StratumOne US NJ w2aiq.ddns.net OpenAccess No oilpan@optonline.net 2021-03-24T22:10:01Z
StratumOne BR ntps1.cortex.pads.ufrj.br OpenAccess No Rafael Jorge Csura Szendrodi (szendro@pads.ufrj.br). 2019-02-08T01:15:18Z
StratumOne BE time.antwerpspace.be OpenAccess No time@antwerpspace.be 2019-12-10T17:05:35Z
StratumOne DK time.bytopia.dk RestrictedAccess No Michael Oestergaard (time@bytopia.dk) 2019-08-15T14:05:02Z
StratumOne RU ntp.zev.su OpenAccess Yes mail@zev.su 2021-01-31T20:34:21Z
StratumOne US ntp1a.versadns.com OpenAccess Yes helpdesk@eastmaintech.com 2019-09-08T02:56:49Z
StratumOne US CA ntp.silvertree.org OpenAccess No archon@silvertree.org 2022-02-25T16:08:35Z
StratumOne CHE tick.ntp.infomaniak.ch OpenAccess Yes frank.villaro@infomaniak.com 2019-06-26T07:41:03Z
StratumOne BE ntp1.heppen.be RestrictedAccess Yes bas@heppen.be 2022-04-15T13:59:06Z
StratumOne NL ntp1.time.nl OpenAccess No Marco Davids <marco.davids@sidn.nl> 2022-02-16T18:15:01Z
StratumOne CA ntp.zaf.ca OpenAccess Yes jeff@zaf.ca 2019-07-25T23:36:38Z
StratumOne CA ntp.nyy.ca OpenAccess Yes admin@nyy.ca 2019-07-26T16:44:29Z
StratumOne BE stratum-zav.unix-solutions.be RestrictedAccess Yes tech@unix-solutions.be 2020-09-16T11:12:01Z
StratumOne BE stratum-leu.unix-solutions.be RestrictedAccess Yes tech@unix-solutions.be 2020-09-16T11:11:06Z
StratumOne US ntp1.wiktel.com OpenAccess No root@wiktel.com 2019-11-02T05:08:47Z
StratumOne US ntp2.wiktel.com OpenAccess No root@wiktel.com 2019-12-20T22:33:52Z
StratumOne UK On request RestrictedAccess Yes (ntp @ nece.co.uk) 2019-11-21T07:06:29Z
StratumOne HR ntp.hr OpenAccess Yes www.ntp.hr 2020-07-30T16:20:34Z
StratumTwo DE ntp.uit.one OpenAccess Yes Email: Support@uit.one Phone: +49 211 417464 - 80 2020-01-10T23:53:17Z
StratumTwo DE ntp.uit.one OpenAccess Yes Email: Support@uit.one Phone: +49 211 417464 - 80 2020-01-10T23:53:32Z
StratumOne DE ntp.uit.one OpenAccess Yes Email: support@uit.one Phone: +49 211 417464 - 80 https://uit.one 2022-01-17T21:41:59Z
StratumOne UK ntp.blain.email OpenAccess Yes ntp@blain.email 2021-06-22T20:26:45Z
Inactive US CA time-b.pts0.net OpenAccess No nessenj@jimsoffice.org 2020-05-14T18:58:47Z
StratumOne NO ntp.prepro.no RestrictedAccess No kontakt@prepro.no 2020-04-20T23:42:14Z
StratumOne UK time.muppetastic.org.uk OpenAccess No dirk.niggemann@gmail.com 2020-04-05T11:45:08Z
StratumOne DK aika.bsecure.dk OpenAccess Yes Martin Boller (timemaster@bollers.dk) 2020-04-06T21:54:30Z
StratumOne HR time1.ntp.hr OpenAccess Yes www.ntp.hr 2020-05-21T15:30:44Z
StratumTwo US WA time-clock.borgnet.us OpenAccess No Scott Grayban <sgrayban@gmail.com> 2021-08-13T00:58:06Z
StratumOne DK jdata.dk RestrictedAccess Yes jakob.friis@gmail.com 2021-02-23T19:26:00Z
StratumOne US WA clock.borgnet.us ClosedAccess Yes Scott Grayban <sgrayban@gmail.com> 2021-11-04T01:09:51Z
StratumTwo BE ntp.heppen.be OpenAccess No bas@heppen.be 2022-04-26T14:13:52Z
StratumOne AD ClosedAccess Yes admin@skynetcloud.site 2021-12-17T13:44:49Z
StratumOne US WI ntp3.netwrx1.com OpenAccess Yes George R. Kasica (gkasica@netwrx1.com) 2020-12-10T17:17:35Z
StratumTwo US WI ntp4.netwrx1.com OpenAccess Yes George R. Kasica (gkasica@netwrx1.com) 2020-12-10T17:22:16Z
Inactive US MN time.garrw.com OpenAccess Yes root@garrw.com 2021-01-04T15:26:34Z
StratumTwo EU ntp.heppen.be OpenAccess No bas@heppen.be 2021-01-07T17:27:38Z
StratumOne UA gw.cad.kiev.ua OpenAccess Yes vladimir.pushkar@gmail.com 2021-02-03T10:35:55Z
StratumOne DE ntp01.sixtopia.net OpenAccess No ntp@sixtopia.net 2021-02-10T02:20:23Z
StratumTwo UK ntp.xtx.cloud OpenAccess Yes ntp@xtx.cloud 2021-11-19T05:53:06Z
Inactive IT ntp2.barinetti.it OpenAccess Yes giorgio@barinetti.it 2022-02-21T13:19:09Z
Inactive IT ntp1.barinetti.it OpenAccess Yes giorgio@barinetti.it 2022-02-21T13:19:38Z
StratumOne NO chronotis.bbj.io OpenAccess Yes Bård Bjerke Johannessen <bbj@bbj.io> 2021-04-28T22:51:47Z
StratumOne DK ntp2.itcompliance.dk RestrictedAccess Yes thomas@itcompliance.dk 2021-12-08T10:50:04Z

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