What are the campus Network Time Protocol (NTP) servers?
NTP (Network Time Protocol) provides accurate and consistent time references to coordinate and synchronize internet systems
and communications. ITS now has local Stratum 1 time servers (clock1.unc.edu, clock2.unc.edu, and clock3.unc.edu) available for your
use, with more to come in the near future.
ITS Communication Technologies/Networking recommends using the NTP servers listed in the order given below as the reference clocks for your
system time server client configuration:
Clock Name Clock IP Stratum Use Group Location
clock1.unc.edu 18.104.22.168 Stratum 1; GPS reference Main Campus Manning
clock2.unc.edu 22.214.171.124 Stratum 1; GPS reference Main Campus Franklin
clock3.unc.edu 172.27.175.236 Stratum 1; GPS reference Med School Brinkhaus
Alternate Configuration Considerations:
– you may alter the order of clocks in your particular NTP configuration based on choosing clocks closest to your fixed location and area of use (Main Campus, Med School).
– all Mobile devices should use the order listed above, with ‘Clock1.unc.edu’ as their primary NTP reference, unless directed to do otherwise.
– using the ‘Clock Name’ instead of the ‘Clock IP’ when possible will reduce the need to update to your NTP configuration if the hardware providing the NTP services above change in the future.
Recommended settings for configuring DNS service for your client can be found here.