If you need Network Time Protocol service for you computer or server, you should use the following address:
pool.time.ucla.edu
That address is an alias for the following pool of addresses:
ntp-asm1.time.ucla.edu 164.67.62.216
ntp-asm2.time.ucla.edu 164.67.62.213
ntp-csb1.time.ucla.edu 164.67.62.198
ntp-csb2.time.ucla.edu 164.67.62.201
Please do not use tick.ucla.edu or tock.ucla.edu anymore