Centos:
0.centos.pool.ntp.org
1.centos.pool.ntp.org
2.centos.pool.ntp.org
Available in China
ntp.fudan.edu.cn Fudan
210.72.145.44 National Defensive Center Server
NTP servers in the Asian region
bangladesh-bd.pool.ntp.org (0)
China-cn.pool.ntp.org (3)
Hong kong-hk.pool.ntp.org (1)
India-in.pool.ntp.org (2)
Indonesia-id.pool.ntp.org (2)
iran-ir.pool.ntp.org (0)
Israel-il.pool.ntp.org (3)
Japan-jp.pool.ntp.org (5)
Korea-kr.pool.ntp.org (4)
Malaysia-my.pool.ntp.org (3)
philippines-ph.pool.ntp.org (0)
Singapore-sg.pool.ntp.org (3)
Taiwan-tw.pool.ntp.org (7)
thailand-th.pool.ntp.org (1)
turkey-tr.pool.ntp.org (1)
Arab emirates-ae.pool.ntp.org (0)
In foreign countries:
Time.nist.gov USA
Time-a.nist.gov
Time-b.nist.gov
Time-nw.nist.gov
time.windows.com
This article is from the "Study-everyday" blog, make sure to keep this source http://studys.blog.51cto.com/9736817/1675125
Common NTP server for public network