Public NTP Primary (stratum 1) Time Servers _________________________________________________________________ 1. bigben.cac.washington.edu 140.142.16.34 (CNAME ntp-wu.usno.navy.mil) Location: University of Washington, Seattle, WA Synchronization: NTP primary (GPS clock), HP9000/747i HPUX Service Area: Pacific Northwest Access Policy: open access to Pacific Time Zone stratum 2's and to Univ. of Washington clients; others by arrangement Contact: Rich Schmidt, USNO, res@tuttle.usno.navy.mil, Bill Mar, Univ. of Washington (bmar@cac.washington.edu) 2. bitsy.mit.edu (18.72.0.3) Location: MIT Information Systems, Cambridge, MA Geographic Coordinates: 42:21:36N, 71:05:24W Synchronization: NTP primary (WWV clock), VAX/Unix Service Area: NSFNET, NEARnet area Access Policy: open access Contact: Jeff Schiller (jis@mit.edu) 3. canon.inria.fr (192.93.2.20) Location: INRIA, Rocquencourt (near Paris), France Synchronization: NTP V3 primary (TDF clock), Sun/Unix Service Area: RENATER, France Access Policy: open access, please send a message to notify Contact: ntp-adm@inria.fr Note: We use a Datel RCH208 clock with SER024 V24 interface. 4. chronos.univ-rennes1.fr (129.20.128.2) Location: University of Rennes, Britany, France Synchronization: NTP V3 primary (GPS clock), Sun/Unix Service Area: France/Europe Access Policy: open access, send a message to notify Contact: timemaster@univ-rennes1.fr Note: the reference time is given by a Trimble SVeeSix receiver with PPS signal 5. clepsydra.dec.com (16.1.0.4, 204.123.2.5) Location: DEC Western Research Laboratory, Palo Alto, CA Synchronization: NTP V3 primary (GPS clock), PC/BSDI 2.1 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. 6. clock.cmc.ec.gc.ca Location: Canadian Meteorological Centre, Dorval, Qu=E9bec, Canada Synchronization: NTP V3 primary (GOES OM/DC-468 clock), HP-UX/Unix Service Area: Econet (environment canada national network) Access Policy: open within Econet. Outside by prior arrangement only. Contact: Peter Silva ( webmaster.cmc@ec.gc.ca) 7. clock.isc.org (192.5.5.250) Location: Internet Software Consortium, Palo Alto, CA Geographic Coordinates: 122 9 41 W / 37 26 35 N Synchronization: NTP primary (GOES clock), BSD UNIX Service Area: BARRnet, Alternet-west, CIX-west Access Policy: open access Contact: Paul Vixie (paul@vix.com) 8. clock.llnl.gov (128.115.14.97) Location: Lawrence Livermore National Laboratory, Livermore, CA Synchronization: NTP V3 primary (WWVB clock), Sun 3/60 Service Area: BARRNet, ESNet Access Policy: open access Contact: Joe Carlson (carlson@lll-winken.llnl.gov) 9. clock.nc.fukuoka-u.ac.jp (133.100.9.2) Location: Fukuoka university, Fukuoka, Japan Geographic Coodinates: 130:21.81E, 33:32.87N Synchronization: NTP V3.3 primary (GPS clock), Heliostation 400/SunOS 4.1.3 Service Area: Japan/Pacific area Access Policy: open access Contact: TSURUOKA Tomoaki (tsuruoka@fukuoka-u.ac.jp), YOSHIMURA Kenji (yosimura@tl.fukuoka-u.ac.jp) Note: We use a TRAK 8810 GPS STATION CLOCK and a Furuno Electric Co.'s GN-72 GPS receiver respectively. 10. clock.tl.fukuoka-u.ac.jp (133.100.11.8) Location: Fukuoka university, Fukuoka, Japan Geographic Coodinates: 130:21.81E, 33:32.87N Synchronization: NTP V3.3 primary (GPS clock), Heliostation 400/SunOS 4.1.3 Service Area: Japan/Pacific area Access Policy: open access Contact: TSURUOKA Tomoaki (tsuruoka@fukuoka-u.ac.jp), YOSHIMURA Kenji (yosimura@tl.fukuoka-u.ac.jp) Note: We use a TRAK 8810 GPS STATION CLOCK and a Furuno Electric Co.'s GN-72 GPS receiver respectively. 11. clock.osf.org (130.105.4.59) Location: Open Software Foundation, Cambridge, MA Synchronization: NTP primary (WWV clock), i586/OSF1 Service Area: NSFNET, NEARnet region Access Policy: open access Contact: Paul Groff (groff@osf.com) Note: prior permission to access required 12. fuzzy.nta.no (128.39.1.149) Location: The Research Department of the Norwegian Telecommunications Administration (NTA-RD), Kjeller, Norway Synchronization: NTP primary, (NTP clock), Fuzzball (LORAN-C timebase) Service Area: Norway Access Policy: closed access; for use only by prior arrangement Contact: Terje Hammer (ham@tor.nta.no) 13. jamtepat.singnet.com.sg (165.21.110.7) Location: SingNet, Singapore Geographic Coordinates: 1.292N 103.808E (GPS WGS84) Synchronization: Datum Tymserve 2100-GPS Service Area: STIX/Asia (outside Singapore), others by arrangement Access Policy: port access granted by arrangement Contact: timekeeper@singnet.com.sg 14. lerc-dns.lerc.nasa.gov (128.156.1.43) Location: NASA Lewis Research Center, Cleveland, OH Synchronization: NTP Primary (WWVB clock), Sun/Unix Service Area: NSFNET, OARNET Access Policy: open access Contact: Joe Rossoll (yyjer@scivax.lerc.nasa.gov) 15. mizbeaver.udel.edu (128.4.1.2) Location: University of Delaware, Newark, DE Geographic Coordinates: 39:40:48.425N, 75:45:02.392W (GPS WGS84) Synchronization: NTP V3 primary (GPS clock), Bancomm Tymeserve 2000 LAN Time Server Service Area: NSFNET, SURA region Access Policy: closed access, except for stratum-2 servers providing synchronization to local networks of ten or more hosts Contact: Dave Mills (mills@udel.edu) Note: This server does not implement the NTP control-message protocol 16. navobs1.gatech.edu (130.207.244.240) CNAMES: tick.gatech.edu, ntp-gatech.usno.navy.mi Location: Georgia Institute of Technology, Atlanta, GA Geographic Coordinates: 84 23 40.9W 33 46 30.0N WGS84 Synchronization: NTP V3 primary (GPS clock) Service area: USA Eastern timezone, others by arrangement Access Policy: open access for stratum 2 servers Contacts: Rich Schmidt, US Naval Observatory (res@tuttle.usno.navy.mil), Ray Spalding, Georgia Institute of Technology, (cc100aa@xray.oit.gatech.edu) 17. navobs1.usnogps.navy.mil (204.34.198.40) CNAME: tick.usnogps.navy.mil Location: Falcon AFB, Colorado Geographic Coordinates: 104 31 30 W, 38 48 30 N WGS84 Synchronization: NTP V3 primary (USNO Alternate Master Clock H-maser) HP9000/747i Service area: USA Pacific and Mountain timezones, others by arrangement. Access Policy: open access Contact: Rich Schmidt, US Naval Observatory (res@tuttle.usno.navy.mil) 18. navobs2.usnogps.navy.mil (204.34.198.41) CNAME: tock.usnogps.navy.mil Location: Falcon AFB, Colorado Geographic Coordinates: 104 31 30 W, 38 48 30 N WGS84 Synchronization: NTP V3 primary (USNO Alternate Master Clock H-maser) HP9000/747i Service area: USA Pacific and Mountain timezones, others by arrangement. Access Policy: open access Contact: Rich Schmidt, US Naval Observatory (res@tuttle.usno.navy.mil) 19. navobs1.wustl.edu (128.252.19.1) CNAME: tick.wustl.edu Location: Washington University, St. Louis, MO Synchronization: NTP V3 primary (GPS) HP9000/747i Service area: USA Central timezone, others by arrangement. Access Policy: open access Contact: Rich Schmidt,US Naval Observatory (res@tuttle.usno.navy.mil) 20. ncar.ucar.edu (192.52.106.6, 192.43.244.9) - a Silent Key 21. ncnoc.ncren.net (192.101.21.1) Location: MCNC, Research Triangle Park, NC Synchronization: NTP V3 primary (WWVB clock), Netclock/2, Sun 4/65 Service area: NC-REN region Access Policy: NC-REN region, other use by prior arrangement Contact: Tim Seaver (tas@ncren.net, clockmaster@ncren.net) 22. ntp.nasa.gov (192.203.230.10) Location: NASA Ames Research Center, Moffett Field, CA Synchronization: NTP primary (WWVB clock), Sun/Unix Service Area: NSFNET, BARR region, NASA NSN, DOE ESNET, DDN Access Policy: open access Asim Mughal (clockmaster@ntp.nasa.gov) 23. ntp.cc.utexas.edu (129.116.206.10) Location: University of Texas at Austin, Austin TX Synchronization: NTP V3 primary (WWV clock), Sun Sparc1+/SunOS 4.1.3_U1 Service Area: THENET region Access Policy: open access Contact: William L. Jones (jones@hpcf.cc.utexas.edu) 24. ntp.cs.mu.OZ.AU (128.250.36.2) Location: The University of Melbourne, Melbourne Australia. Geographic Coordinates: 37:48:06S 144:57:44E Synchronization: NTP V3 primary (GPS clock), Sun Sparc2/SunOS 4.1.4 Service area: Australia, New Zealand, PACCOM (by prior arrangement) Access policy: open access, please limit to two peer hosts per site Contact: David Hornsby (ntp@cs.mu.OZ.AU) 25. ntp.dgf.uchile.cl (146.83.8.200) Location: Dpto. Geofísica, Universidad de Chile. Santiago, Chile. Geographic Coordinates: Lat: 33° 27.19'S. Lon: 70° 39.70'W. Alt: 533m. Synchronization: NTP V3 primary (GOES OM/DC-468 clock), SunSparc10/SunOS 4.1.3. Service area: REUNA and interconnected networks, Chile. Access Policy: open access, please send a message to notify. Contact: Gonzalo Pérez (gperez@dgf.uchile.cl) Note: ntp is an alias and the IP address may change; please use DNS. 26. ntp.ml.csiro.au (192.67.12.101) Location: CSIRO Marine Laboratories, Hobart, Tasmania, Australia Geographic Coordinates: 42:53:14S, 147:20:18E Synchronization: NTP V3 primary (Kinemetrics OM-DC Omega clock), SGI/Unix Service Area: AARNet Access Policy: open access Contact: Paul Tildesley (tildes@ml.csiro.au) Note: ntp is an alias and the IP address may change; please use DNS. 27. ntp.syd.dms.csiro.au (swifty.dap.csiro.au) 130.155.98.13 Location: National Measurements Laboratory, Sydney Australia. Geographic Coordinates: 33:46:58S 151:09:06E Synchronization: NTP V3, HP 5061B Cesium Beam Frequency Standard via Leitch CSD-5300 Master Clock System Driver Service Area: AARNet Access Policy: open access Contact: Mark Andrews (clockmaster@syd.dms.csiro.au) 28. ntp-sop.inria.fr (138.96.64.10) Location: INRIA, Sophia Antipolis (French Riviera, near Nice), France Synchronization: NTP V3 primary (GPS), PC/Linux Service Area: RENATER, R3T2, France/Europe Access Policy: open access, please send a message to notify Contact: ntp-adm@sophia.inria.fr, More help? Note: We use a MC2 Starsync GPS EISA card 29. ntp0.ja.net (128.232.0.8) Location: University of Cambridge Computer Laboratory, UK Geographic Coordinates: 52:12:00N, 00:09:00E Synchronization: NTP V3 primary (MSF EES clock), Sun/Unix Service Area: JIPS, UK, Europe Access Policy: closed access, email address below. Contact: jips-nosc@nic.ja.net Note: This server is part of the centrally managed JIPS (approximately ac.uk) NTP network. Any requests for connections (internal or external to JIPS) should be emailed to the Contact address above. 30. ntp0.nl.net (193.78.240.12) Location: NLnet, Amsterdam, The Netherlands Synchronization: NTP primary (DCF77), Sun/Unix SunOS 4.1.3 Service Area: The Netherlands/Europe Access Policy: open access Contact: beheer@nl.net 31. ntp1.delmarva.com (138.39.7.20) Location: Delmarva Power & Light Co., Newark DE Synchronization: NTP primary (GPS clock), Bancomm 2200 GPS Clock Service area: MCInet Access policy: open access Contact: John K. Scoggin (scoggin@delmarva.com) 32. ntp1.nss.udel.edu (128.175.60.175) Location: University of Delaware, Newark, DE Geographic Coordinates: 39:40:35.8N, 75:44:36.6W (GPS WGS 84) Synchronization: NTP V3 Primary (GPS clock), TrueTime NTS-100-GPS Service Area: BBN Planet SER Access Policy: closed access, except for stratum-2 servers providing synchronization to local networks of ten or more hosts Contact: Ron Reisor (ron@udel.edu) Note: This server does not implement the NTP control-message protocol. 33. ntp0.sdd.hp.com (15.255.160.64) (was known as wwvb.sdd.hp.com) Location: Hewlett Packard Co., San Diego, CA Synchronization: NTP V3 primary (HP58503A GPS Clock), HP-UX/Unix Service Area: NSFNET, BARR region Access Policy: semi-open access, prior arrangment required Contact: Ken Stone (timekeeper@sdd.hp.com) Note: Used for code development 34. ntp1.sony.com (198.93.3.1) Location: Sony San Jose, San Jose, CA Geographic Coordinates: 37:24:9.7N 121:55:55.8W (GPS) Synchronization: NTP V3 primary (GPS clock), PC/BSDI 1.1 Service Area: NSFnet, BARRnet region Access Policy: open access, please contact first Contact: Jerry Scharf (scharf@sony.com), Paul Vixie (vixie@vix.com) 35. ntp2.usno.navy.mil (192.5.41.209) Location: U.S. Naval Observatory, Washington, DC Geographic Coordinates: 77 03 57.7W 38 55 14.1N WGS84 Synchronization: NTP V3 primary (USNO Master Clocks 1,2, and GPS) Service area: USA Eastern timezone, others by arrangement Access Policy: open access for stratum 2 servers Contact: Rich Schmidt, US Naval Observatory (res@tuttle.usno.navy.mil) 36. ntps1-0.uni-erlangen.de (131.188.1.40) Location: University Erlangen-Nuernberg, D-91058 Erlangen, FRG Geographic Coordinates: 49.573N 11.028E (from Meinberg GPS 166) Synchronization: NTP V3 primary (GPS receiver (Service Area: Germany/Europe Access Policy: open access, pick one of ntps1-{0,1,2}.uni- erlangen.de Contact: Frank Kardel, Rainer Pruy (time@informatik.uni-erlangen.de) 37. ntps1-0.cs.tu-berlin.de (130.149.17.21) Location: Technische Universitaet Berlin, D-10587 Berlin, FRG Geographic Coordinates: 52.518N 13.326E Synchronization: NTP V3 primary (Meinberg GPS 166), Sun 4/65 SunOS4.1.3 Service Area: Germany/Europe Access Policy: open access Contact: Gerard Gschwind (gg@cs.tu-berlin.de) 38. ntps1-1.cs.tu-berlin.de (130.149.17.8) Location: Technische Universitaet Berlin, D-10587 Berlin, FRG Geographic Coordinates: 52.518N 13.326E Synchronization: NTP V3 primary (Meinberg GPS 166), SunS10-402 SunOS5.4 Service Area: Germany/Europe Access Policy: open access Contact: Gerard Gschwind (gg@cs.tu-berlin.de) 39. ntps1-1.rz.Uni-Osnabrueck.DE (131.173.17.7) Location: University of Osnabrueck, D-49069 Osnabrueck, FRG Synchronization: NTP V3 primary (DCF77 clock), Sun/Unix Service Area: Germany/Europe Access Policy: open access Contact: Gernot Skalla (timeadm@Uni-Osnabrueck.DE) 40. ntps1-1.uni-erlangen.de (131.188.1.45) Location: University Erlangen-Nuernberg, D-91058 Erlangen, FRG Geographic Coordinates: 49.573N 11.028E (from Meinberg GPS 166) Synchronization: NTP V3 primary (DCF77 PZF receiver (Service Area: Germany/Europe Access Policy: open access, pick one of ntps1-{0,1,2}.uni- erlangen.de Contact: Frank Kardel, Rainer Pruy (time@informatik.uni-erlangen.de) 41. ntps1-2.uni-erlangen.de (131.188.1.31) Location: University Erlangen-Nuernberg, D-91058 Erlangen, FRG Geographic Coordinates: 49.573N 11.028E (from Meinberg GPS 166) Synchronization: NTP V3 primary (DCF77 PZF receiver (Service Area: Germany/Europe Access Policy: open access, pick one of ntps1-{0,1,2}.uni- erlangen.de Contact: Frank Kardel, Rainer Pruy (time@informatik.uni-erlangen.de) 42. otc1.psu.edu (128.118.46.3) Location: Penn State University, University Park, PA Synchronization: NTP V3 primary (WWV clock), Sun/Unix Service Area: NSFNET, PREPNET, JvNCnet Access Policy: open access Contact: John Balogh (JohnBalogh@psu.edu) (no longer: jdb@ecl.psu.edu) 43. rackety.udel.edu (128.4.1.1) Location: University of Delaware, Newark, DE Geographic Coordinates: 39:40:48.425N, 75:45:02.392W (GPS WGS84) Synchronization: NTP V3 primary (GPS clock), Sun IPC/SunOS 4.1.3 Service Area: NSFNET, SURA region Access Policy: closed access, except for stratum-2 servers providing synchronization to local networks of ten or more hosts Contact: Dave Mills (mills@udel.edu) 44. swisstime.ethz.ch (129.132.2.21) Location: Integrated Systems Laboratory, Swiss Fed. Inst. of Technology, CH 8092 Zurich, Switzerland Geographic Coordinates: 47:23N, 8:32E Synchronization: NTP primary (DCF77 clock), Sun-4/490/SunOS 4.1.3 Service Area: Switzerland/Europe Access Policy: open access, Please send e-mail message to notify that you are using us for time service, so that we can alert you about any interruptions of service, etc. Contact: Adam Feigin (time@swisstime.ethz.ch) Note: The host name is an alias used only for time service. 45. tempo.cstv.to.cnr.it (150.145.33.1) Location: CSTV of National Research Council, Torino, Italy Geographic Coordinates: 45:00:54N, 7:38:20.7E, 306.6H Syncronization: NTP V3 primary (IEN CTD clock), DecSystem 5500/Ultrix 4.4 Service Area: Italy/Europe Access Policy: open access Contact: Fabrizio Pollastri (pollastri@cstv.to.cnr.it) Note: information at http://www.cstv.to.cnr.it/toi 46. terrapin.csc.ncsu.edu 152.1.58.124 (experimental) Location: North Carolina State University, Raleigh, NC Synchronization: NTP primary (GPS clock), Trimble Accutime Service Area: South Eastern US Access Policy: open access Contact: Sven Dietrich, NCSU, sven@terrapin.csc.ncsu.edu 47. tick.mit.edu (129.7.1.66) CNAME: navobs1.mit.edu Location: Massachusetts Institute of Technology, Cambridge, MA Synchronization: NTP V3 primary (GPS) HP9000/747i Service Area: eastern time zone, others on request Access Policy: open access to stratum-2 servers and to MIT clients Contacts: Rich Schmidt (res@tuttle.usno.navy.mil) 48. tick.ucla.edu (164.67.62.194) CNAMEs: navobs1.ucla.edu, time.ucla.edu Location: UCLA, Los Angeles, CA Synchronization: NTP V3 primary (GPS) HP9000/747i Service area: Pacific time zone, others on request Access policy: open access to stratum-2 servers and to UCLA clients Contacts: Rich Schmidt (res@tuttle.usno.navy.mil), Scott Burris (scott@cns.ucla.edu) 49. tick.uh.edu (129.7.1.66) CNAME: time.uh.edu Location: University of Houston, Houston, TX Geographic Coordinates: 29:43:37N,95:20:22W Synchronization: NTP V3 primary (GPS) HP9000/747i Service Area: US Central time zone, others on request Access Policy: open access to stratum-2 servers and to UH clients Contacts: Rich Schmidt (res@tuttle.usno.navy.mil), Alan Pfeiffer-Traum (apt@uh.edu) 50. tick.usask.ca (128.233.3.100) Location: University oc Saskatchewan, Saskatoon, Saskatchewan, SK, Canada Geographic Coordinates: 52:08:01N,106:38:11W Synchronization: NTP V3 Primary (GOES clock), DEC Mips/Unix Service Area: SASK#net, CA*net, Canada Access Policy: open access, prior arrangment required Contact: Alfred Hovdestad (alfred.hovdestad@usask.ca) Note: priority given to local regional sites Note: tick.usask.ca and tock.usask.ca share a single GOES receiver 51. tick.usno.navy.mil (192.5.41.40) Location: U.S. Naval Observatory, Washington, DC Geographic Coordinates: 38:55:14.01 77:03:58.03 (GPS WGS84) Synchronization: NTP V3 primary (USNO Master Clock 2, H-maser), HP9000/747i Service Area: NSFNET Access Policy: open access Contact: Rich Schmidt (res@tuttle.usno.navy.mil) 52. time.ien.it (193.204.114.1) Location: IEN Galileo Ferraris, Torino, Italy Synchronization: NTP primary (Cesium Beam Frequency Standard), Sun/Unix Service Area: Italy/Europe Access Policy: open access Contact: denasi@ien.it 53. time.nist.gov (192.43.244.18) Location: National Center for Atmospheric Research, Boulder, Colorado Geographic Coordinates: 39:58:43.44N 254:43:32.5E +1840m (WGS 84) Synchronization: ACTS dial-up with NTP backup, DECstation/ULTRIX Service Area: NSFnet, WESTnet Access Policy: open to stratum-2 servers and others by arrangement Contact: Judah Levine (jlevine@time.nist.gov), (303) 492-7785 54. Time1.Stupi.SE (192.36.143.150) Location: Stupi AB, Stockholm, SWEDEN Synchronization: NTP V3 primary (Saphir Cesium Beam Standard/GPS), BSDI Unix Service Area: SUnet, NORDUnet Access Policy: open access Contact: Peter Lothberg (roll@Stupi.SE) 55. time.service.uit.no Location: The EDB Centre, University of Tromsoe, Norway Synchronization: NTP V3 primary (GPS clock), HP-UX/Unix Service Area: NORDUnet Access Policy: semi-open access, prior arrangment required Contact: (timekeeper@uit.no) 56. time-a.nist.gov (129.6.16.35) New Access policy: Open only to existing users; other users please use time-b or time-c instead. 57. time-b.nist.gov (129.6.16.36) Location: NIST Central Computer Facility, Gaithersburg, Maryland Synchronization: ACTS dial-up using lockclock algorithm, DEC Alpha/UNIX Service Area: NSFnet, SURAnet Access Policy: Open to stratum-2 servers, others by arrangement; please use one of the servers as primary with the other as a backup. Contact: Judah Levine (jlevine@time.nist.gov) 303 492 7785 time-c.timefreq.bldrdoc.gov (132.163.135.132) Location: NIST Boulder Laboratories, Boulder, Colorado Synchronization: Direct 1 pps from clock ensemble; lockclock algorithm and ACTS dial-up as backup; DEC Alpha/UNIX. Service Area: NSFnet, WESTnet Access Policy: Open to servers with at least 10 clients; others by arrangement. please use only one of these servers primary with the other as backup. Contact: Judah Levine (jlevine@time.nist.gov) 303 492 7785. time-d.timefreq.bldrdoc.gov (132.163.135.133) Location: NIST Boulder Laboratories, Boulder, Colorado Synchronization: interlock algorithm with direct 1 pps from clock ensemble as backup; DEC Alpha/UNIX. Service Area: NSFnet, WESTnet Access Policy: Used for testing and algorithm development. NOT for general use. Contact: Judah Levine (jlevine@time.nist.gov) 303 492 7785 58. time-a.timefreq.bldrdoc.gov (132.163.135.130) Location: NIST Boulder Laboratories, Boulder, Colorado Synchronization: Direct 1 pps from clock ensemble; lockclock algorithm and ACTS dial-up as backup; DEC Alpha/UNIX Service Area: NSFnet, WESTnet Access Policy: Open to stratum-2 servers, others by arrangement; please use only one of the servers as primary with the other as a backup. Contact: Judah Levine (jlevine@time.nist.gov) 303 492 7785 59. time-b.timefreq.bldrdoc.gov (132.163.135.131) Location: NIST Boulder Laboratories, Boulder, Colorado Synchronization: Direct 1 pps from clock ensemble; lockclock algorithm and ACTS dial-up as backup; DEC Alpha/UNIX Service Area: NSFnet, WESTnet Access Policy: Open to stratum-2 servers, others by arrangement; please use only one of the servers as primary with the other as a backup. Contact: Judah Levine (jlevine@time.nist.gov) 303 492 7785 60. tock.usask.ca (128.233.3.101) Location: University oc Saskatchewan, Saskatoon, Saskatchewan, SK, Canada Geographic Coordinates: 52:08:01N,106:38:11W Synchronization: NTP V3 Primary (GOES clock), DEC Mips/Unix Service Area: SASK#net, CA*net, Canada Access Policy: open access, prior arrangment required Contact: Alfred Hovdestad (alfred.hovdestad@usask.ca) Note: priority given to local regional sites Note: tick.usask.ca and tock.usask.ca share a single GOES receiver 61. tock.usno.navy.mil (192.5.41.41) Location: U.S. Naval Observatory, Washington, DC Geographic Coordinates: 38:55:14.01 77:03:58.03 (GPS WGS84) Synchronization: NTP V3 primary (USNO Master Clock 2, H-maser), HP9000/747i Service Area: NSFNET Access Policy: open access Contact: Rich Schmidt (res@tuttle.usno.navy.mil) 62. truechimer.cso.uiuc.edu (128.174.5.58) Location: University of Illinois, Urbana-Champaign, IL Synchronization: NTP V3 primary (WWVB clock), IBM-RS6000/250 Service Area: CICNET, Midwest, NCSA region Access Policy: closed access except for peers that meet the three conditions outlined in the "Time Servers" section of this file. State agreement with those conditions in notification message. All others may use the ntp-{0,1,2}.cso.uiuc.edu stratum 2 servers. Contact: Charley Kline (kline@uiuc.edu) Note: truechimer is a DNS CNAME. The host with the WWVB clock will always have the truechimer alias. 63. umd1.umd.edu (128.8.10.1) Location: University of Maryland, College Park, MD Synchronization: NTP V3 primary (WWVB clock), Fuzzball Service Area: NSFNET, SURA region Access Policy: closed access, except for stratum-2 servers providing synchronization to local networks of ten or more hosts Contact: Michael Petry (petry@ni.umd.edu) 64. usno.pa-x.dec.com (204.123.2.72) CNAME: navobs1.pa-x.dec.com Location: Digital Equipment Corp. Palo Alto, CA (122 9 41.7 W 37 26 42.6 N WGS84) Synchronization: NTP V3 primary (GPS) Service area: USA Pacific and Mountain timezones, others by arrangement. Access Policy: open access Contact: Rich Schmidt, US Naval Observatory (res@tuttle.usno.navy.mil) Paul Flaherty, Digital Equipment Corp.(flaherty@pa.dec.com) 65. utcnist.microsoft.com (131.107.1.10) CNAME: time-nw.nist.gov Location: Microsoft Corporation, Redmond, Washington Synchronization: ACTS Dial-up and lockclock algorithm, DEC Alpha/UNIX Service Area: NorthWestNet, NSFnet Access policy: open to stratum-2 servers and others by arrangement. Contact: Judah Levine (jlevine@time-a.timefreq.bldrdoc.gov) (303) 492-7785 66. utcnist1.reston.mci.net (204.70.131.13) Location: MCI facility, Reston, VA Synchronization: ACTS dial-up using lockclock algorithm, DEC Alpha/Unix Service area: NSFnet, SURAnet Access policy: Open to servers with multiple clients, others by arrangement Contact: Judah Levine (jlevine@boulder.nist.gov (303 492 7785 67. vecrhc1.hpl.hp.com - retired - do not use 68. wave.mbari.org (134.89.2.200) Location: Monterey Bay Aquarium Research Institute, Moss Landing, CA Synchronization: NTP primary (WWV clock), HP/Unix Service Area: San Francisco / Monterey Bay Area Access Policy: closed access; for use only by prior arrangement Contact: Pat Allen (timekeeper@mbari.org) 69. wwvb.erg.sri.com (128.18.{4,100,110}.39) Location: SRI International, Menlo Park, CA Synchronization: NTP primary (WWVB clock) Sun/Unix Service Area: NSFNET, BARRnet Region Access Policy: open access Contact: clockmaster@erg.sri.com Note: wwvb.erg.sri.com is a CNAME for (presently) sparkyfs.erg.sri.com. clockmaster@erg.sri.com is currently aliased to John Ferguson (ferg@erg.sri.com) and Bryan McDonald (bigmac@erg.sri.com). Last update: 5/25/94. 70. wwvb.isi.edu (128.9.2.129) Location: USC Information Sciences Institute, Marina del Rey, CA Geographic Coordinates: 33:58:49N, 118:26:20W (USGS map NAD27) Synchronization: NTP V3 primary (WWVB clock), Fuzzball Service Area: NSFNET, Los Nettos region Access Policy: open access Contact: Steve Casner (casner@isi.edu)