Public NTP Secondary (stratum 2) Time Servers

This information, compiled by Prof. David Mills of the University of Delaware, is reproduced here for your convenience. For the most current information, please visit the source at http://www.eecis.udel.edu/~mills/ntp/clock2.html

You may also find the NTP home page to be of interest.

Last update: 2 December 1997 UTC

  1. augean.eleceng.adelaide.edu.au (129.127.28.4)
    Location: University of Adelaide, South Australia
    Synchronization: NTP secondary (stratum 2), Sun-4/75/Unix
    Service area: AARNet
    Access policy: open access, please send a message to notify
    Contact: systems@eleceng.adelaide.edu.au
  2. bernina.ethz.ch (129.132.98.11)
    Location: Swiss Fed. Inst. of Technology, CH 8092 Zurich, Switzerland
    Geographic Coordinates: 47:23N, 8:32E
    Synchronization: NTP secondary (stratum 2), Sun SS10-51/SunOS4
    Service Area: Switzerland/Europe
    Access Policy: open access
    Contact: Adam Feigin (time@iis.ee.ethz.ch)
  3. biofiz.mf.uni-lj.si (193.2.69.11)
    Location: Institute of Biophysics, University of Ljubljana, Slovenia
    Geographic Coordinates: 46:03:09N, 14:30:40E
    Synchronization: NTP V3 secondary (stratum 2), HP/Unix
    Service Area: Slovenia/Europe
    Access Policy: open access, please send a message to notify
    Contact: Primoz Peterlin (time@biofiz.mf.uni-lj.si)
  4. black-ice.cc.vt.edu (128.173.14.71)
    Location: Virginia Tech Computing Center, Blacksburg, VA, USA
    Synchronization: NTP V3 secondary (Stratum 2), RS/6000-220
    Service Area: southeastern US, anyplace netwise close to ANSNet Greensboro
    Access Policy: open access
    Contact: valdis@black-ice.cc.vt.edu or Valdis.Kletnieks@vt.edu
    Note: ntp-2.vt.edu is a CNAME for black-ice.cc.vt.edu
  5. bug.fe.up.pt (193.136.54.1)
    Location: Oporto University, Portugal
    Synchronization: NTP secondary (stratum 2), i486/Linux
    Service Area: Portugal/Europe
    Access Policy: For use only by prior arrangement. Mail
    timemaster@bug.fe.up.pt for more information.
  6. chime.utoronto.ca (128.100.102.201)
    Location: University of Toronto, Toronto, Ontario, CANADA
    Synchronization: NTP V3 secondary (stratum 2), Sparc 5, Solaris 2.5
    Service Area: Eastern Canada
    Access Policy: open access, send email to notify.
    Contact: Russell Sutherland (russell.sutherland@utoronto.ca)
    Note: IP addresses are subject to change; please use DNS
  7. chime1.surfnet.nl (192.87.106.101)
    Location: SURFnet Amsterdam PoP (SARA, Kruislaan, Amsterdam, The Netherlands)
    Synchronization: NTP secondary (Stratum 2), Sun Sparc 10
    Service Area: SURFnet, The Netherlands
    Access Policy: open for SURFnet connected sites, others by prior arrangement
    Contact: netmaster@surfnet.nl
    Note: Chime1.surfnet.nl is peering with Stratum 2 Server chime2.surfnet.nl (192.87.36.2), which is located in the SURFnet Delft PoP (TUDelft RC, Julianalaan, Delft). Please notify the address above in case you start chiming us.
  8. churchy.udel.edu (128.4.1.5)
    Location: University of Delaware, Newark, DE
    Geographic Coordinates: 39:40:48.425N, 75:45:02.392W (GPS WGS84)
    Synchronization: NTP V3 secondary (stratum 2), cisco IGS 9.2 router
    Service Area: NSFNET, SURA region
    Access Policy: experimental access only; service may be withdrawn without notice
    Contact: Dave Mills (mills@udel.edu)
  9. clepsydra.dec.com (16.1.0.4, 204.123.2.5)
    Location: DEC Western Research Laboratory, Palo Alto, CA
    Synchronization: NTP V3 secondary (stratum 2), Ultrix RISC
    Service Area: NSFNET, BARR region
    Access Policy: open access, send email to notify before using
    Contact: ntp-admin@pa.dec.com
    Note: The host name is an alias used only for time service.
  10. clock.psu.edu (128.118.25.3)
    Location: Penn State University, University Park, PA
    Geographic Coordinates: 40:47:58.1N, 77:51:44.8W (USGS 40077-G7-TF-024)
    Synchronization: NTP V3 secondary (stratum 2), Sun SPARCstation 2/Solaris 2.5.1
    Service Area: NSFNET, CICnet, PREPnet
    Access Policy: open access
    Contact: John Balogh (JDB@psu.edu)
    Note: clock.psu.edu is a CNAME for otc2.psu.edu
  11. clock.tricity.wsu.edu (192.31.216.5)
    Location: Washington State University Tri-Cities, Richland, Wa
    Synchronization: NTP secondary (stratum 2), DS5100/Unix
    Service Area: NSFNET, NorthWestNet
    Access Policy: open access
    Contact: postmaster@beta.tricity.wsu.edu)
    Note: clock.tricity.wsu.edu is a CNAME for meson.tricity.wsu.edu
  12. clock1.unc.edu (152.2.21.1)
    Location: University of North Carolina-Chapel Hill, Chapel Hill, NC
    Geographic Coordinates: 35:54N, 79:03W
    Synchronization: NTP secondary (stratum 2), Sun4/SunOS/xntpd (V3)
    Service Area: CONCERT region
    Access Policy: CONCERT region, others by prior arrangement
    Contact: Timekeeper (timekeeper@clock1.unc.edu) NOTE: The default restriction on this host is "noserve". Hosts outside the service area must make prior arrangements to receive time service.
  13. clock-1.cs.cmu.edu (128.2.250.95)
    Location: Carnegie Mellon University Computer Science, Pittsburgh, PA
    Geographic Coordinates: 40:26:39N, 79:57:12W
    Synchronization: NTP V3 secondary (stratum 2), DECstation 5000- 120/Ultrix 4.2A
    Service Area: PREPNET, PSC region
    Access Policy: semi-open access; for use only by prior arrangement
    Contact: Rudy Nedved (ern+@cs.cmu.edu)
    Note: The host name is an alias used only for time service.
  14. clock-2.cs.cmu.edu (128.2.222.8)
    Location: Carnegie Mellon University Computer Science, Pittsburgh, PA
    Geographic Coordinates: 40:26:39N, 79:57:12W
    Synchronization: NTP V3 secondary (stratum 2), DECstation 5000- 120/Ultrix 4.2A
    Service Area: PREPNET, PSC region
    Access Policy: semi-open access; for use only by prior arrangement
    Contact: Rudy Nedved (ern+@cs.cmu.edu)
    Note: The host name is an alias used only for time service.
  15. constellation.ecn.uoknor.edu (129.15.22.8)
    Location: University of Oklahoma, Norman, Oklahoma, USA
    Synchronization: NTP secondary (stratum 2), Mac Quadra 700/A/UX 3.0
    Service Area: Midnet
    Access Policy: open access
    Contact: Robert Shull (rob@mailhost.ecn.uoknor.edu)
  16. cuckoo.nevada.edu (131.216.1.101)
    Location: University of Nevada System Computing Services, Las Vegas, NV
    Synchronization: NTP V3 secondary (stratum 2), DEC Alpha/Unix
    Service Area: NevadaNet, NSFNET, SDSC region
    Access Policy: open access, please send message to notify
    Contact: Systems Group (software@nevada.edu)
    Note: cuckoo.nevada.edu is a CNAME for alphabits.nevada.edu
  17. delphi.cs.ucla.edu (131.179.128.36)
    Location: UCLA Computer Science Department, Los Angeles, CA
    Geographic Coordinates: 34:04:08N, 118:26:31W
    Synchronization: NTP secondary (stratum 2), Sun/SunOS
    Service Area: NSFNET, SDSC region
    Access Policy: open access
    Contact: Chinson Yi (chinson@cs.ucla.edu)
  18. eagle.tamu.edu (165.91.72.27)
    Location: Texas A&M University, College Station, Texas
    Synchronization: NTP v3 secondary (stratum 2), DEC Alpha/Unix
    Service Area: NSFNET, SESQUI region, THEnet, Texas
    Access Policy: open access
    Contact: privitt@eagle.tamu.edu (Carl Privitt)
  19. everest.cclabs.missouri.edu (128.206.206.12)
    Location: University of Missouri-Columbia, Columbia, MO, USA
    Synchronization: NTP secondary (stratum 2), SGI Indigo R4000/IRIX 5.3
    Service Area: MOREnet
    Access Policy: open access, please send a message to notify
    Contact: Paul Walmsley (ccshag@cclabs.missouri.edu) or timemaster@cclabs.missouri.edu
  20. fartein.ifi.uio.no (129.240.102.2)
    Location: University of Oslo, Norway
    Geographic Coordinates: 59:56:32N, 10:43:22E
    Synchronization: NTP secondary (stratum 2), VAXstation/Ultrix
    Service Area: NORDUnet
    Access Policy: open access
    Contact: Anders Ellefsrud, Ole Bjorn Hessen (timekeeper@ifi.uio.no)
    Note: Other stratum 2 servers in the Oslo area available on request
  21. fuzz.psc.edu (128.182.58.100)
    Location: Pittsburgh Supercomputing Center, Pittsburgh, PA
    Synchronization: NTP V3 secondary (stratum 2), DEC5000/200
    Service area: NSFNET, PSC region
    Access policy: open access, but please send a message to notify.
    Contact: noc@psc.edu
  22. fuzz.sura.net (192.80.214.42)
    Location: SURAnet, College Park, MD
    Synchronization: NTP V3 secondary (stratum 2), Fuzzball
    Service Area: NSFNET, SURAnet region
    Access Policy: closed access; please use ntp1.sura.net or ntp2.sura.net
    Contact: timekeeper@sura.net
    Note: formerly known as clock.umd.edu (192.41.177.92); fuzz.sura.net has a CNAME of clock.sura.net
  23. gazette.bcm.tmc.edu (128.249.2.2)
    Location: Baylor College of Medicine, Houston, Tx
    Synchronization: NTP secondary (stratum 2), Solbourne-OS/MP 4.0C
    Service Area: NSFNET, SESQUI region
    Access Policy: open access
    Contact: Postmaster (postmaster@bcm.tmc.edu)
  24. gilbreth.ecn.purdue.edu (128.46.129.93, 128.46.141.93, 128.46.147.93, 128.46.148.93, 128.46.171.93)
    Location: Purdue University Engineering Computer Network, West Lafayette, IN
    Synchronization: NTP V3 secondary (stratum 2), Sun SPARCserver 1000/Solaris 2.3
    Service area: NSFNET, CICNET area
    Access policy: open access
    Contact: Mike Moya (moyman@ecn.purdue.edu)
  25. harbor.ecn.purdue.edu (128.46.128.76, 128.46.129.76, 128.46.154.76)
    Location: Purdue University Engineering Computer Network, West Lafayette, IN
    Synchronization: NTP V3 secondary (stratum 2), Sun-4/75+/Solaris 2.3
    Service area: NSFNET, CICNET area
    Access policy: open access
    Contact: Mike Moya (moyman@ecn.purdue.edu)
  26. info.cyf-kr.edu.pl: 149.156.4.11
    Location: Academic Computer Centre, CYFRONET, Krakow, Poland
    Synchronization: NTP V3 secondary (stratum 2), HP/Unix
    Service Area: Poland/Europe
    Access policy: open access, please send a message to notify
    Contact: Jerzy.Pawlus@cyf-kr.edu.pl
  27. hmljhp.rzs-hm.si (193.2.208.12)
    Location: Hydrometeorological Institute of Slovenia, Ljubljana, Slovenia
    Geographic Coordinates: 46:03:09N, 14:30:40E
    Synchronization: NTP V3 secondary (stratum 2), HP/Unix
    Service Area: SLovenia/Europe
    Access Policy: open access, please send a message to notify
    Contact: Metod Kozelj (metod.kozelj@rzs-hm.si)
  28. lassen.slc.ca.gov (134.186.121.10)
    Location: California State Lands Commission, Sacramento, CA
    Synchronization: NTP V2 secondary (stratum 2), Digital UNIX
    Service Area: CSGNet, California & Western US
    Access Policy: Open Access for service area/others by arrangement, all send E-mail to notify
    Contact: kauffme@slc.ca.gov, reinerg@slc.ca.gov
    Note: Will be converted to V3 late 1997
  29. molecule.ecn.purdue.edu (128.46.129.95, 128.46.132.95, 128.46.136.95, 128.46.145.95, 128.46.167.95, 128.46.169.95, 128.46.181.95)
    Location: Purdue University Engineering Computer Network, West Lafayette, IN
    Synchronization: NTP V3 secondary (stratum 2), Sun SPARCserver 1000/Solaris 2.3
    Service area: NSFNET, CICNET area
    Access policy: open access
    Contact: Mike Moya (moyman@ecn.purdue.edu)
  30. finch.cc.ukans.edu (129.237.32.1)
    Location: Kansas University Computer Center, Lawrence, Kansas 66047, USA
    Geographic Coordinates: 39:56N, 95:14W
    Synchronization: NTP secondary (stratum 2), DEC 3000-500 Digital Unix
    Service Area: Midnet, NSFnet
    Access policy: open access
    Contact: Craig Paul (paul@kuhub.cc.ukans.edu)
  31. kuhub.cc.ukans.edu (129.237.32.2)
    Location: Kansas University Computer Center, Lawrence, Kansas 66047, USA
    Geographic Coordinates: 39:56N, 95:14W
    Synchronization: NTP secondary (stratum 2), DEC 7000-610 OpenVMS Alpha
    Service Area: Midnet, NSFnet
    Access policy: open access
    Contact: Craig Paul (paul@kuhub.cc.ukans.edu)
  32. libra.rice.edu (128.42.1.64)
    Location: Rice University, Houston, TX
    Synchronization: NTP secondary (stratum 2), Fuzzball
    Service Area: NSFNET, SESQUI region
    Access Policy: open access
    Contact: Farrell Gerbode (gerbode@rice.edu)
    Note: this server has not been heard from for many months [dlm]
  33. louie.udel.edu (128.175.1.3)
    Location: University of Delaware, Newark, DE
    Synchronization: NTP V3 secondary (stratum 2), Vax-11/780/Unix
    Service Area: NSFNET, SURA region
    Access Policy: open access
    Contact: Dave Mills (mills@udel.edu)
  34. ns.scruz.net (165.227.1.1)
    Location: scruz-net, inc. Santa Cruz, CA USA
    Synchronization: NTP V3 secondary (stratum 2), BSD on Intel
    Service area: Western USA (MAE-West attached)
    Access policy: open access (scruz-net customers use both ns.scruz.net and nic.scruz.net, others please use one or the other, not both... please drop us a note if you're using the server so we can keep you on our status list)
    Contact: Matthew Kaufman (matthew@scruz.net)
  35. ns.nts.umn.edu (128.101.101.101)
    Location: Minneapolis, MN
    Synchronization: NTP secondary (stratum 2), Sun/SunOS 4.1.3
    Service Area: CICNET region
    Access Policy: open access, please send a message to notify.
    Networking & Telecommunications Services (nts@nts.umn.edu)
    Note: select one of ns.nts.umn.edu or nss.nts.umn.edu to equalize load
  36. nss.nts.umn.edu (134.84.84.84)
    Location: St Paul, MN
    Synchronization: NTP secondary (stratum 2), Sun/SunOS 4.1.3
    Service Area: CICNET region
    Access Policy: open access, please send a message to notify.
    Networking & Telecommunications Services (nts@nts.umn.edu)
    Note: select one of ns.nts.umn.edu or nss.nts.umn.edu to equalize load
  37. ntp.adelaide.edu.au (129.127.40.3)
    Location: University of Adelaide, South Australia
    Synchronization: NTP V3 secondary (stratum 2), DECsystem 5000/25 Unix
    Service Area: AARNet
    Access Policy: open access
    Contact: Danielle Hopkins (dani@itd.adelaide.edu.au)
  38. ntp.cox.smu.edu (129.119.80.126)
    Location: Cox School of Business, Southern Methodist University, Dallas, TX
    Synchronization: NTP V3 secondary (stratum 2), DEC 3000/300LX AXP DEC OSF/1 AXP
    Service Area: NSFNET, SESQUI region
    Access Policy: open access
    Contact: Allen Gwinn (allen@mail.cox.smu.edu)
    Note: Please send e-mail letting us know you will be using ntp.cox.smu.edu. ntp.cox.smu.edu is a CNAME for nyse.cox.smu.edu.
  39. ntp.css.gov (140.162.1.3)
    Location: Center for Seismic Studies, Arlington, VA
    Geographic Coordinates: 38:53:50N, 77:04:34W
    Synchronization: NTP V3 secondary (stratum 2), Sun-Sparc-5, Solaris 5.5.1
    Service Area: NSFNET, SURA region
    Access Policy: open access
    Contact: Dan Brown (dbrown@cmr.gov)
  40. ntp.ctr.columbia.edu (128.59.64.60)
    Location: Columbia University Center for Telecommunications Research; New York City, NY
    Synchronization: NTP secondary (stratum 2), Sun/Unix
    Service Area: Sprintlink/NYSERnet
    Access Policy: open access, authenticated NTP (DES/MD5) available
    Contact: Seth Robertson (timekeeper@ctr.columbia.edu)
    Note: IP addresses are subject to change; please use DNS
  41. ntp.exnet.com (194.207.34.9)
    Location: ExNet Ltd, London, UK
    Synchronization: NTP secondary (stratum 2), Sun-4/Unix
    Service area: UK/Europe/any
    Access policy: semi-open access, please send message first for access
    Contact: sysadmin@exnet.com or dhd@exnet.com
    Note: Please see our Web page before using. Please use CNAME ntp.exnet.com since IP address may well change.
  42. ntp.lth.se (130.235.20.3)
    Location: Lund Institute of Technology, Lund, Sweden
    Synchronization: NTP V3 secondary (stratum 2), Sun/Solaris
    Service Area: Sweden, NORDUnet
    Access Policy: open access, send email to notify. Please limit access to one or two hosts per site (large sites should set up their own ntp server)
    Contact: timemaster@lth.se
  43. ntp.maths.tcd.ie
    Location: School of Mathematics, Trinity College, Dublin, Ireland.
    Synchronization: NTPV3 secondary (stratum 2), Intel, FreeBSD 2.2
    Service Area: Ireland, UK
    Access Policy: open access, please send a message to notify.
    Contact: time@maths.tcd.ie
    Note: ntp.cs.tcd.ie, ntp.maths.tcd.ie and ntp.tcd.ie peer together over local area net. It is normally sufficient just to pick one machine to peer with.
  44. ntp.olivetti.com (129.189.134.11, 129.189.134.6)
    Location: Olivetti ATC, Cupertino, CA
    Synchronization: NTP secondary (stratum 2), VAX/Unix
    Service Area: Alternet
    Access Policy: open access
    Contact: Jerry Aguirre (jerry@olivetti.com)
  45. ntp.saard.net (203.21.37.18)
    Location: The University of Adelaide, Adelaide, South AUSTRALIA
    Synchronization: NTP secondary (stratum 2), DEC 3000/300L OSF/1
    Service Area: AARNet
    Access Policy: open access
    Contact: Danielle Hopkins (dani@itd.adelaide.edu.au)
  46. ntp.ucsd.edu (132.239.51.18)
    Location: UCSD Computer Science & Engineering Department, San Diego, CA
    Synchronization: NTP secondary (stratum 2), DEC AlphaStation 250 4/266, Digital UNIX
    Service Area: CERFNET; NSFNET, SDSC region
    Access Policy: open access, please send a message to notify.
    Contact: timekeeper@cs.ucsd.edu
  47. ntp.univ-lyon1.fr (134.214.100.6)
    Location: CISM, Lyon, France
    Synchronization: NTP V3 secondary (stratum 2), Sun SS10
    Service Area: France, Switzerland, Italy, Europe
    Access Policy: open access
    Contact: ntp-adm@univ-lyon1.fr
    Note: consult DNS to get host address, ntp is an alias.
    Note: we would appreciate getting a little note if you make regular use of this server, so that we can put you on our NTP mailing-list.
  48. ntp0.cornell.edu (192.35.82.50)
    Location: Cornell University, Ithaca, NY
    Synchronization: NTP secondary (stratum 2), Sun/Unix
    Service Area: NSFNET, NYSER region
    Access Policy: open access
    Contact: Donald Redick (dredick@nmc.cit.cornell.edu)
  49. ntp0.pipex.net 158.43.128.33
    Configuration: NTP V3 secondary (stratum 2), Sun sparc Ultra, Solaris 2.5.1, xntpd 3-5.90
    Location: Cambridge, UK
    Service Area: UUNET UK (formerly known as PIPEX); UK
    Access Policy: Semi-open access. These are primarily for use by UUNET UK customers, but others are welcome to peer if they give notice.
    Contact: timelord@uunet.pipex.com
    Note: This is not currently a supported service of UUNET UK, and is not subject to any guarantees. UUNET UK customers should peer with all three: ntp0.pipex.net, ntp1.pipex.net, and ntp2.pipex.net. Other users please peer with one of these three only.
  50. ntp1.kansas.net (206.103.126.59)
    Location: KansasNet OnLine Services, Manhattan, KS
    Synchronization: NTP V3 secondary (stratum 2), Linux on Intel
    Service area: Central USA / Great Plains
    Access policy: open access to ntp1.kansas.net *or* ntp2.kansas.net; customers may use both servers.
    Contact: Joel Baker (bsafh@kansas.net)
  51. ntp1.pipex.net 158.43.128.66
    Configuration: NTP V3 secondary (stratum 2), Sun sparc Ultra, Solaris 2.5.1, xntpd 3-5.90
    Location: Cambridge, UK
    Service Area: UUNET UK (formerly known as PIPEX); UK
    Access Policy: Semi-open access. These are primarily for use by UUNET UK customers, but others are welcome to peer if they give notice.
    Contact: timelord@uunet.pipex.com
    Note: This is not currently a supported service of UUNET UK, and is not subject to any guarantees. UUNET UK customers should peer with all three: ntp0.pipex.net, ntp1.pipex.net, and ntp2.pipex.net. Other users please peer with one of these three only.
  52. ntp2.pipex.net 158.43.192.66
    Configuration: NTP V3 secondary (stratum 2), Sun sparc Ultra, Solaris 2.5.1, xntpd 3-5.90
    Location: London, UK
    Service Area: UUNET UK (formerly known as PIPEX); UK
    Access Policy: Semi-open access. These are primarily for use by UUNET UK customers, but others are welcome to peer if they give notice.
    Contact: timelord@uunet.pipex.com
    Note: This is not currently a supported service of UUNET UK, and is not subject to any guarantees. UUNET UK customers should peer with all three: ntp0.pipex.net, ntp1.pipex.net, and ntp2.pipex.net. Other users please peer with one of these three only.
  53. ntp0.strath.ac.uk (130.159.132.1, 130.159.144.62) ocation: Dept. Computer Science, Strathclyde University, Glasgow, Scotland.
    Geographic Coordinates: 04:14W, 55:52N
    Synchronization: NTP V3 secondary Sun/Unix Service Area: UK/Europe/any
    Access Policy: open access
    Contact: Jim Reid (ntp@cs.strath.ac.uk)
    Note: IP addresses are subject to change; please use DNS
  54. ntp1.strath.ac.uk (130.159.132.66, 130.159.152.62)
    Location: Dept. Computer Science, Strathclyde University, Glasgow, Scotland.
    Geographic Coordinates: 04:14W, 55:52N
    Synchronization: NTP V3 secondary Sun/Unix
    Service Area: UK/Europe/any
    Access Policy: open access
    Contact: Jim Reid (ntp@cs.strath.ac.uk)
    Note: IP addresses are subject to change; please use DNS
  55. ntp2.strath.ac.uk (130.159.132.6, 130.159.132.65)
    Location: Dept. Computer Science, Strathclyde University, Glasgow, Scotland.
    Geographic Coordinates: 04:14W, 55:52N
    Synchronization: NTP V3 secondary Sun/Unix
    Service Area: UK/Europe/any
    Access Policy: open access
    Contact: Jim Reid (ntp@cs.strath.ac.uk)
    Note: IP addresses are subject to change; please use DNS
  56. ntp3.strath.ac.uk (130.159.196.126, 130.159.132.2)
    Location: Dept. Computer Science, Strathclyde University, Glasgow, Scotland.
    Geographic Coordinates: 04:14W, 55:52N
    Synchronization: NTP V3 secondary Sun/Unix
    Service Area: UK/Europe/any
    Access Policy: open access
    Contact: Jim Reid (ntp@cs.strath.ac.uk)
    Note: IP addresses are subject to change; please use DNS
  57. ntp4.strath.ac.uk (130.159.132.16, 130.159.132.124)
    Location: Dept. Computer Science, Strathclyde University, Glasgow, Scotland.
    Geographic Coordinates: 04:14W, 55:52N
    Synchronization: NTP V3 secondary Sun/Unix
    Service Area: UK/Europe/any
    Access Policy: open access
    Contact: Jim Reid (ntp@cs.strath.ac.uk)
    Note: IP addresses are subject to change; please use DNS
  58. ntp1.sura.net (128.167.1.222)
    Location: SURAnet, College Park, MD
    Synchronization: NTP V3 secondary (stratum 2), Sun Sparc/SunOS
    Service Area: SURAnet region
    Access Policy: open access; please send a message to notify.
    Contact: timekeeper@sura.net
  59. ntp2.sura.net (128.167.254.198)
    Location: SURAnet, College Park, MD
    Synchronization: NTP V3 secondary (stratum 2), DEC DECstation/Ultrix
    Service Area: SURAnet region
    Access Policy: open access; please send a message to notify.
    Contact: timekeeper@sura.net
  60. ntp1.tamu.edu, ntp2.tamu.edu, ntp3.tamu.edu, ntp4.tamu.edu, and ntp6.tamu.edu withdrawn from public service
  61. ntp5.tamu.edu (165.91.52.110)
    Location: Texas A&M University, College Station, TX
    Synchronization: NTP secondary (stratum 2, ver. 3), SPARCstation 10/Solaris 1.x
    Service area: NSFNET, SESQUI region, THEnet, TAMUSDSN
    Access policy: open access
    Contact: NTP Administrator (ntp@tamu.edu)
  62. ntp-1.ece.cmu.edu 128.2.236.71
    Location: Carnegie Mellon Electrical and Computer Engineering, Pittsburgh, PA
    Geographic Coordinates: 40:26N, 79:57W
    Synchronization: NTP V3 secondary (stratum 2), VAXstation 3200/Ultrix 4.4
    Service Area: PREPNET, PSC region
    Access Policy: open access, please notify
    Contact: ECE Facilities (gripe@ece.cmu.edu)
    Note: Name is an alias for use by NTP.
  63. ntp-2.ece.cmu.edu 128.2.25.7
    Location: Carnegie Mellon Electrical and Computer Engineering, Pittsburgh, PA
    Geographic Coordinates: 40:26N, 79:57W
    Synchronization: NTP V3 secondary (stratum 2), VAXstation 3200/Ultrix 4.4
    Service Area: PREPNET, PSC region
    Access Policy: open access, please notify
    Contact: ECE Facilities (gripe@ece.cmu.edu)
    Note: Name is an alias for use by NTP.
  64. ntp-1.mcs.anl.gov (140.221.10.70)
    Location: Argonne National Laboratory, near Chicago, IL
    Synchronization: NTP secondary (stratum 2), Sun Sparcstation 1
    Service Area: NSF/ANSNet, CICNet, NetIllinois, ESNet, others welcome
    Access Policy: open access, please send a message to notify
    Contact: Support Staff (support@mcs.anl.gov)
    Note: IP addresses are subject to change; please use DNS
  65. ntp-2.mcs.anl.gov (140.221.9.6, 140.221.10.64)
    Location: Argonne National Laboratory, near Chicago, IL
    Synchronization: NTP secondary (stratum 2), Sun Sparcstation 2
    Service Area: NSF/ANSNet, CICNet, NetIllinois, ESNet, others welcome
    Access Policy: open access, please send a message to notify
    Contact: Support Staff (support@mcs.anl.gov)
    Note: IP addresses are subject to change; please use DNS
  66. ntp1.ossi.com (192.240.4.1)
    Location: Emeryville, CA
    Synchronization: NTP V3 secondary (stratum 2), Sun4-330/Unix
    Service Area: BARRNet
    Access Policy: open access, please send a message to notify.
    Contact: Mary Seabrook (mary@ossi.com)
    Note: select one of ntp1.ossi.com or ntp2.ossi.com to share load
  67. ntp2.ossi.com (192.240.4.50)
    Location: Emeryville, CA
    Synchronization: NTP V3 secondary (stratum 2), Sun4-690/Unix
    Service Area: BARRNet
    Access Policy: open access, please send a message to notify.
    Contact: Mary Seabrook (mary@ossi.com)
    Note: select one of ntp1.ossi.com or ntp2.ossi.com to share load
  68. ntp-0.cso.uiuc.edu (130.126.24.53)
    Location: University of Illinois, Urbana-Champaign, IL
    Synchronization: NTP secondary (stratum 2), Cisco-ASM/4
    Service Area: CICNET, Midwest, NCSA region
    Access Policy: open access
    Contact: Charley Kline (kline@uiuc.edu)
    Note: select one of (ntp-0.cso.uiuc.edu, ntp-1.cso.uiuc.edu, ntp- 2.cso.uiuc.edu) to equalize load. Use names rather than IP addresses if possible. The ntp-N aliases follow wherever the service is moved to.
  69. ntp-1.cso.uiuc.edu (130.126.24.24)
    Location: University of Illinois, Urbana-Champaign, IL
    Synchronization: NTP secondary (stratum 2), Cisco-ASM/4
    Service Area: CICNET, Midwest, NCSA region
    Access Policy: open access
    Contact: Charley Kline (kline@uiuc.edu)
    Note: select one of (ntp-0.cso.uiuc.edu, ntp-1.cso.uiuc.edu, ntp- 2.cso.uiuc.edu) to equalize load. Use names rather than IP addresses if possible. The ntp-N aliases follow wherever the service is moved to.
  70. ntp-2.cso.uiuc.edu (130.126.24.44)
    Location: University of Illinois, Urbana-Champaign, IL
    Synchronization: NTP secondary (stratum 2), Cisco-ASM/4
    Service Area: CICNET, Midwest, NCSA region
    Access Policy: open access
    Contact: Charley Kline (kline@uiuc.edu)
    Note: select one of (ntp-0.cso.uiuc.edu, ntp-1.cso.uiuc.edu, ntp- 2.cso.uiuc.edu) to equalize load. Use names rather than IP addresses if possible. The ntp-N aliases follow wherever the service is moved to.
  71. ntp2a.audiotel.com.mx (200.34.146.67)
    Location: Audiotel office, Mexico D.F., Mexico
    Synchronization: NTP V3 secondary (stratum 2), NeXTstation/33
    Service Area: Avantel, MCINet, Mexico
    Access Policy: open access, but please send a message to notify.
    Contact: Pedro Resendiz (resendiz@audiotel.com.mx)
  72. ntp2b.audiotel.com.mx (200.34.146.68)
    Location: Audiotel office, Mexico D.F., Mexico
    Synchronization: NTP V3 secondary (stratum 2), NeXTstation/33
    Service Area: Avantel, MCINet, Mexico
    Access Policy: open access, but please send a message to notify.
    Contact: Pedro Resendiz (resendiz@audiotel.com.mx)
  73. ntp2c.audiotel.com.mx (200.34.146.69)
    Location: Audiotel office, Mexico D.F., Mexico
    Synchronization: NTP V3 secondary (stratum 2), NeXTstation/33
    Service Area: Avantel, MCINet, Mexico
    Access Policy: open access, but please send a message to notify.
    Contact: Pedro Resendiz (resendiz@audiotel.com.mx)
  74. ntp2a.mcc.ac.uk (130.88.200.22)
    Location: University of Manchester, Manchester, England
    Synchronization: Sun
    Service Area: UK
    Access Policy: Open Access
    Contact(s): timelords@mcc.ac.uk
  75. ntp2b.mcc.ac.uk 130.88.200.6)
    Location: University of Manchester, Manchester, England
    Synchronization: Sun
    Service Area: UK
    Access Policy: Open Access
    Contact(s): timelords@mcc.ac.uk
  76. ntp2c.mcc.ac.uk 130.88.200.4)
    Location: University of Manchester, Manchester, England
    Synchronization: Sun
    Service Area: UK
    Access Policy: Open Access
    Contact(s): timelords@mcc.ac.uk
  77. ntp2d.mcc.ac.uk 130.88.203.12)
    Location: University of Manchester, Manchester, England
    Synchronization: HP 9000/750
    Service Area: UK
    Access Policy: Open Access
    Contact(s): timelords@mcc.ac.uk
  78. Rolex.PeachNet.EDU (131.144.4.22)
    Location: PeachNet NOC, Kennesaw, GA
    Synchronization: NTP secondary (stratum 2), Sun Sparc/Unix
    Service Area: PeachNet (Georgia), SURAnet
    Access Policy: open access, please send a message to notify.
    Contact: timekeeper@peachnet.edu
    Note: Please use the CNAME Rolex if at all possible, the IP might change one day.
  79. slug.ctv.es [194.179.52.14] (will add an alias for this purpose)
    Location: Altea (Alicante/SPAIN)
    Synchronization: Stratum-2/i486DX2/66/Linux
    Service Area: Spain
    Access Policy: Public (glad to receive a note)
    Contact: Luis Colorado (luis.colorado@slug.ctv.es)
  80. salmon.maths.tcd.ie (134.226.81.11)
    Location: Trinity College, Dublin, Ireland
    Synchronization: NTP secondary (stratum 2), MIPS Magnum
    Service Area: Ireland, UK
    Access Policy: open access
    Contact: time@maths.tcd.ie
    Note: salmon.maths.tcd.ie (134.226.81.11), ashe.cs.tcd.ie (134.226.32.17) and lib1.tcd.ie (134.226.1.24)peer together over local area net, and one or more usually run at stratum 2. It is normally sufficient just to pick one machine to peer with.
  81. smart1.svi.org (192.216.191.10)
    Location: Smart Valley Inc., Stanford Uninversity, Palo Alto, CA
    Synchronization: NTP V3 secondary (stratum 2), HP9000/890/HP-UX
    Service Area: BARRNet, SF Bay Area
    Access Policy: open access
    Contact: James Eniti (jeniti@svi.org)
  82. sundial.columbia.edu (128.59.35.142)
    Location: Morningside Campus, Columbia University, New York, NY
    Synchronization: NTP V3 secondary (stratum 2), Sun Sparc10 model 40
    Service Area: NYSERnet
    Access Policy: open access
    Contact: timekeeper@columbia.edu
  83. tick.anice.net.ar (200.5.72.1)
    Location: Buenos Aires, Argentina
    Synchronization: NTP V3 secondary (stratum 2), Cisco IGS 11.1
    Service Area: Argentina
    Access Policy: open access, please send a message to notify
    Contact: Pablo J. Fritz (timekeeper@anice.net.ar)
    Note: tick.anice.net.ar is a CNAME for cisco.ad.net.ar
  84. tick.cs.unlv.edu (131.216.16.9)
    Location: UNLV College of Engineering, Las Vegas, NV
    Synchronization: NTP V3 secondary (stratum 2), Mips/Unix
    Service Area: Sprintnet
    Access Policy: open access
    Contact: Greg Wohletz <greg@cs.unlv.edu>
    Note: select one of tick.cs.unlv.edu or tock.cs.unlv.edu at random to equalize load
  85. tick.koalas.com (207.48.109.6)
    Location: Koala Computers, Coos Bay, OR
    Geographic Coordinates: 43.36N 124.19W
    Synchronization: NTP V3 Secondary (Stratum 2), PC/Linux
    Service Area: Northwestern U.S.
    Access Policy: open access
    Contact: ( webmaster@koalas.com )
  86. tick.utoronto.ca (128.100.96.9)
    Location: University of Toronto, Toronto, Ontario, CANADA
    Synchronization: NTP V3 secondary (stratum 2), Cisco 4700, IOS 11.1
    Service Area: Eastern Canada
    Access Policy: open access, send email to notify.
    Contact: Russell Sutherland (russell.sutherland@utoronto.ca)
    Note: IP addresses are subject to change; please use DNS
  87. Host: time.sinectis.com.ar (200.16.183.2)
    Location: Sinectis S.A., Buenos Aires (Argentina)
    Geographic Coordinates: 3432'S, 5820'W
    Service Area: Argentina
    Synchronization: NTP secondary (stratum 2)
    Access Policy: open access, please send a message to notify.
    Contact: Pablo Cingolani, Levan Djaparidze (timekeeper@sinectis.com.ar)
    Note: time is an alias and the IP address may change; please use DNS.
  88. timelord.uregina.ca (142.3.100.15)
    Location: University of Regina, Regina, Saskatchewan, Canada
    Geographic Coordinates: 50:25N , 104:35:20 W
    Synchronization: NTP V3 secondary (stratum 2), IBM RS6000/AIX
    Service Area: SASK#net, CA*net, Canada
    Access Policy: open access
    Contact: Mark Haidl (timekeeper@uregina.ca)
    Note: please limit to one or two hosts per site.
  89. ticktock.wang.com (150.124.136.4)
    Location: Wang Labs, Billerica MA, USA
    Synchronization: NTP V3 secondary (stratum 2), Pentium/BSDI 2.0
    Service Area: AlterNet, New England
    Access Policy: Open access, please send mail to notify
    Contact: net-services@wang.com
    Note: ticktock is a CNAME
  90. time.five-ten-sg.com (205.147.40.34)
    Location: Lake Arrowhead, CA, USA
    Synchronization: NTP V3 secondary (Stratum 2), NT/intel
    Service Area: within 100ms of Digilink.net
    Access Policy: open access, email for firewall access first
    Contact: carl@five-ten-sg.com
  91. time.software.net
    Special note: IP address available only from POC
    Location: CyberSource Corporation, San Jose, Ca, USA
    Synchronization: NTP V3 secondary (stratum 2), PC Linux
    Service Area: anybody less than 100ms rtt from us.
    Access policy: open access
    Contact: jpp@software.net
    Note: time.software.net is a CNAME the underlying machine and IP address may move soon so use DNS. John Pettitt, jpp@software.net EVP, CyberSource Corporation, 408 556 9300 x 6013 PGP Key available at: http://www-swiss.ai.mit.edu/htbin/pks-extract-key.pl?op=get&search=0xB7AA3705
  92. timeserver.cs.umb.edu (158.121.104.4)
    Location: University of Massachusetts, Boston, MA
    Synchronization: NTP V3 secondary (stratum 2), DEC/Ultrix
    Service Area: NEARNET, (and anyone else who would like it)
    Access Policy: open access
    Primary Contact: John Rouillard (rouilj@cs.umb.edu)
    Secondary Contact: Rick Martin (rickm@cs.umb.edu)
  93. timex.cs.columbia.edu (128.59.16.20)
    Location: Columbia University Computer Science Department, New York City, NY
    Synchronization: NTP secondary (stratum 2), Sun/Unix
    Service Area: PSINET; NSFNET, NYSER region
    Access Policy: open access, authenticated NTP (DES/MD5) available
    Contact: James Tanis (timekeeper@cs.columbia.edu)
    Note: IP addresses are subject to change; please use DNS
  94. Timex.PeachNet.EDU (131.144.4.21)
    Location: PeachNet NOC, Kennesaw, GA
    Synchronization: NTP secondary (stratum 2), Sun Sparc/Unix
    Service Area: PeachNet (Georgia), SURAnet
    Access Policy: open access, please send a message to notify.
    Contact: timekeeper@peachnet.edu
    Note: Please use the CNAME Timex if at all possible, the IP might change one day.
  95. tmc.edu (128.249.1.1)
    Location: Baylor College of Medicine, Houston, Tx
    Synchronization: NTP secondary (stratum 2), Sun/SunOS 4.1
    Service Area: NSFNET, SESQUI region
    Access Policy: open access
    Contact: Stan Barber (sob@tmc.edu)
  96. tock.anice.net.ar (200.5.73.1)
    Location: Buenos Aires, Argentina
    Synchronization: NTP V3 secondary (stratum 2), Cisco IGS 11.1
    Service Area: Argentina
    Access Policy: open access, please send a message to notify
    Contact: Pablo J. Fritz (timekeeper@anice.net.ar)
    Note: tock.anice.net.ar is a CNAME for router.anice.net.ar
  97. tock.cs.unlv.edu (131.216.18.4)
    Location: UNLV College of Engineering, Las Vegas, NV
    Synchronization: NTP V3 secondary (stratum 2), Mips/Unix
    Service Area: Sprintnet
    Access Policy: open access
    Contact: Greg Wohletz <greg@cs.unlv.edu>
    Note: select one of tick.cs.unlv.edu or tock.cs.unlv.edu at random to equalize load
  98. tock.utoronto.ca (128.100.100.128)
    Location: University of Toronto, Toronto, Ontario, CANADA
    Synchronization: NTP V3 secondary (stratum 2), Sparc 5, Solaris 2.5
    Service Area: Eastern Canada
    Access Policy: open access, send email to notify.
    Contact: Russell Sutherland (russell.sutherland@utoronto.ca)
    Note: IP addresses are subject to change; please use DNS
  99. truechimer[123].waikato.ac.nz (130.217.76.16, 130.217.66.91, 130.217.96.20)
    Location: The University of Waikato. Hamilton, New Zealand
    Synchronisation: NTP V3 (stratum 2), Digital AlphaServer 800 and AXP 3000's/Digital UNIX
    Service Area: New Zealand
    Access Policy: open access within New Zealand
    Contact: ntp@waikato.ac.nz
  100. vtserf.cc.vt.edu (128.173.4.6)
    Location: Virginia Tech Computing Center, Blacksburg, VA, USA
    Synchronization: NTP V 3 secondary (Stratum 2), DEC 5810/ultrix
    Service Area: southeastern US, anyplace netwise close to ANSNet Greensboro
    Access Policy: open access
    Contact: valdis@black-ice.cc.vt.edu or Valdis.Kletnieks@vt.edu
    Note: ntp-1.vt.edu is a CNAME for vtserf.cc.vt.edu
  101. wuarchive.wustl.edu (128.252.135.4)
    Location: Washington University, St. Louis, Missouri, USA
    Synchronization: NTP secondary (stratum 2), DECstation 5000/Ultrix
    Service Area: Midnet
    Access Policy: open access
    Contact: Chris Myers (chris@wupost.wustl.edu)
  102. www1.cmc.ec.gc.ca
    Location: Canadian Meteorological Centre, Dorval, Qu&eacutebec, Canada
    Synchronization: NTP V3 secondary SGI/Unix
    Service Area: Eastern Canada
    Access Policy: open access
    Contact: Peter Silva ( ntp-admin@cmc.ec.gc.ca)
  103. www2.cmc.ec.gc.ca
    Location: Canadian Meteorological Centre, Dorval, Qu&eacutebec, Canada
    Synchronization: NTP V3 secondary SGI/Unix
    Service Area: Eastern Canada
    Access Policy: open access
    Contact: Peter Silva ( ntp-admin@cmc.ec.gc.ca)
  104. xfiles.esa.lanl.gov (128.165.196.1)
    Location: Los Alamos National Laboratory - Los Alamos, NM
    Synchronization: NTP secondary (stratum 2), Alpha 4/233 VMS
    Service Area: ESNET, TECHNET area
    Access Policy: open access
    Contact: Jim A. Whitfill whitfill@lanl.gov
  105. xfiles-jr.esa.lanl.gov (128.165.196.2)
    Location: Los Alamos National Laboratory, Los Alamos, NM
    Synchronization: NTP secondary (stratum 2), VAXStation 4000-60 VMS+Multinet
    Service Area: ESNET, TECHNET area
    Access Policy: open access
    Contact: Jim A. Whitfill whitfill@lanl.gov
David L. Mills (mills@udel.edu)

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