time.apple.com
time.euro.apple.com
time.aws.com
time.facebook.com
time1.facebook.com
time2.facebook.com
time3.facebook.com
time4.facebook.com
time5.facebook.com
time.google.com
time1.google.com
time2.google.com
time3.google.com
time4.google.com
ut1-wwv.nist.gov
ntp-b.nist.gov
ntp-d.nist.gov
ntp-wwv.nist.gov
time.nist.gov
time-a-g.nist.gov
time-b-g.nist.gov
time-c-g.nist.gov
time-d-g.nist.gov
time-e-g.nist.gov
time-a-b.nist.gov
time-b-b.nist.gov
time-c-b.nist.gov
time-d-b.nist.gov
time-e-b.nist.gov
time-a-wwv.nist.gov
time-b-wwv.nist.gov
time-c-wwv.nist.gov
time-d-wwv.nist.gov
time-e-wwv.nist.gov
ntp-c.colorado.edu
ut1-time.colorado.edu
utcnist.colorado.edu
utcnist2.colorado.edu
utcnist3.colorado.edu
ntp0.ntp-servers.net
ntp1.ntp-servers.net
ntp2.ntp-servers.net
ntp3.ntp-servers.net
ntp4.ntp-servers.net
ntp5.ntp-servers.net
ntp6.ntp-servers.net
ntp7.ntp-servers.net
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+.ntp.ripe.net
+.ntp.fiord.ru
+.clock.isc.org
+.pool.ntp.org
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+.time.nrc.ca
+.time.windows.com
+.ntp.nict.jp
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+.ats1.e-timing.ne.jp
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ntp.aliyun.com
ntp1.aliyun.com
ntp2.aliyun.com
ntp3.aliyun.com
ntp4.aliyun.com
ntp5.aliyun.com
ntp6.aliyun.com
ntp7.aliyun.com
time.amazonaws.cn
time.izatcloud.net
time.xtracloud.net
ntp.tencent.com
ntp1.tencent.com
ntp2.tencent.com
ntp3.tencent.com
ntp4.tencent.com
ntp5.tencent.com
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+.ntp.ntsc.ac.cn
+.ntp.org.cn