USNO NTP Network Time Servers
WE STRONGLY RECOMMEND THAT YOU CHOOSE ONE OR MORE SERVERS CLOSE TO YOU FOR REDUNDANCY.
USNO offers authenticated NTP service to DoD and U.S. Government agencies
operating on the NIPR and SIPR Networks. To obtain a key for authentication
please give, at minimum, the following information to the
USNO NTP administrators.
- POC Name:
- POC Phone Number:
- POC Email (prefer unclass):
- DoD organization you're supporting (if different):
- Which key(s) are needed (NIPR, SIPR, or both):
- Which hash(es) are needed (MD5, SHA1, other):
We strongly suggest that DOD users not use the following servers:
Location: Time Service Dept., U.S. Naval Observatory, Washington, DC
Synchronization: NTP V4 primary (USNO Master Clock H-masers )
Location: US Naval Observatory Alternate Master Clock, Colorado Springs, CO
Synchronization: NTP V4 primary (USNO Master Clock H-masers)
For further information contact
Time Service Dept., USNO
Back to Time Service Home Page
"The inaudible and noiseless foot of Time." --W. S.