Technical information

May 31, 2008 AT+i Commands Reference Manual C-1
Appendix C: NIST Time Servers
Note: Check http://tf.nist.gov/service/time-servers.html for updates.
Table C-1: List of NIST Time Servers
Server IP Address Location
nist1.aol-ca.truetime.com 207.200.81.113 TrueTime, AOL facility, Sunnyvale,
California
nist1.aol-va.truetime.com 205.188.185.33 TrueTime, AOL facility, Virginia
nist1.datum.com 66.243.43.21 Datum, San Jose, California
nist1.datum.com 209.0.72.7 Datum, San Jose, California
nist1.dc.certifiedtime.com 216.200.93.8 Abovnet, Virginia
nist1.nyc.certifiedtime.com 208.184.49.9 Abovnet, New York City
nist1.sjc.certifiedtime.com 208.185.146.41 Abovnet, San Jose, California
nist1-dc.glassey.com 216.200.93.8 Abovenet, Virginia
nist1-ny.glassey.com 208.184.49.9 Abovenet, New York City
nist1-sj.glassey.com 207.126.98.204 Abovenet, San Jose, California
time.nist.gov 192.43.244.18 NCAR, Boulder, Colorado
time-a.nist.gov 129.6.15.28 NIST, Gaithersburg, Maryland
time-a.timefreq.bldrdoc.gov 132.163.4.101 NIST, Boulder, Colorado
time-b.nist.gov 129.6.15.29 NIST, Gaithersburg, Maryland
time-b.timefreq.bldrdoc.gov 132.163.4.102 NIST, Boulder, Colorado
time-c.timefreq.bldrdoc.gov 132.163.4.103 NIST, Boulder, Colorado
time-nw.nist.gov 131.107.1.10 Microsoft, Redmond, Washington
utcnist.colorado.edu 128.138.140.44 University of Colorado, Boulder