Result of https://github.com/flano-yuki/mock-ntpv5-client

ntpv4-5.go

time.apple.com response version: 5
time.cloudflare.com response version: 5
time.google.com response version: 5
time-d-b.nist.gov response version: 3
time-d-wwv.nist.gov response version: 3
time.euro.apple.com response version: 5
time.nist.gov response version: 3
time-d-g.nist.gov response version: 3
ntp5.stratum1.ru response version: 5
ntp4.stratum2.ru response version: 5
time5.facebook.com response version: timeout
time.windows.com response version: timeout
utcnist.colorado.edu response version: 3
ntp2.net.berkeley.edu response version: 5
tick.usask.ca response version: 5
tock.usask.ca response version: 5
ntp4.vniiftri.ru response version: 5
clock.sjc.he.net response version: 5
ntp.ru response version: 5
ntp3.jst.mfeed.ad.jp response version: 5
utcnist2.colorado.edu response version: timeout
ntp.ripe.net response version: 5
time-c.as43289.net response version: 5
sth1.ntp.se response version: timeout
europe.pool.ntp.org response version: 5
0.gentoo.pool.ntp.org response version: 5
1.ru.pool.ntp.org response version: 5
svl2.ntp.se response version: timeout
0.opensuse.pool.ntp.org response version: 5
2.askozia.pool.ntp.org response version: 5
3.asia.pool.ntp.org response version: 5
pool.ntp.org response version: timeout
ntp0.as34288.net response version: timeout
0.fedora.pool.ntp.org response version: 5
2.debian.pool.ntp.org response version: 5
1.centos.pool.ntp.org response version: 5
1.arch.pool.ntp.org response version: 5
0.freebsd.pool.ntp.org response version: 5
1.amazon.pool.ntp.org response version: 5
1.openbsd.pool.ntp.org response version: 5
1.dragonfly.pool.ntp.org response version: 5
rackety.udel.edu response version: 5
sesku.planeacion.net response version: 5
navobs1.wustl.edu response version: 5
navobs1.gatech.edu response version: 5
navobs1.oar.net response version: 5
ntp.dianacht.de response version: 5
1.netbsd.pool.ntp.org response version: timeout
time.fu-berlin.de response version: 5
utcnist2.colorado.edu response version: timeout
0.opnsense.pool.ntp.org response version: timeout
ntp.nic.cz response version: 5
ptbtime1.ptb.de response version: 5
clock.uregina.ca response version: 5
ntp.neel.ch response version: 5
ntp.i2t.ehu.eus response version: 5
0.jp.pool.ntp.org response version: 5
fpga-ntp-trial.elab.sakura.ad.jp response version: 5
ntps1.pads.ufrj.br response version: 5
ntp.nict.jp response version: timeout
ntp.shoa.cl response version: 3
time1.esa.int response version: 5
ntp.nc.u-tokyo.ac.jp response version: 5
ntp.neu.edu.cn response version: timeout
ntp.nict.jp response version: timeout
ntp1.tohoku.ac.jp response version: 5
ntp.tut.ac.jp response version: 5
s2csntp.miz.nao.ac.jp response version: 5
ntp1.jpix.ad.jp response version: 5
stdtime.gov.hk response version: 5
tick.stdtime.gov.tw response version: 5
time-a.stanford.edu response version: 5
ats1.e-timing.ne.jp response version: timeout
ntp.ntsc.ac.cn response version: timeout
ntp0.cam.ac.uk response version: timeout
time.edu.cn response version: timeout

ntpv5.go

time.cloudflare.com response version: 5
time.google.com response version: 5
time5.facebook.com response version: timeout
time.windows.com response version: timeout
time-d-b.nist.gov response version: timeout
time-d-wwv.nist.gov response version: timeout
time-d-g.nist.gov response version: timeout
time.nist.gov response version: timeout
time.euro.apple.com response version: timeout
time.apple.com response version: timeout
ntp5.stratum1.ru response version: timeout
ntp4.stratum2.ru response version: timeout
utcnist.colorado.edu response version: timeout
ntp4.vniiftri.ru response version: timeout
pool.ntp.org response version: 5
utcnist2.colorado.edu response version: timeout
tick.usask.ca response version: timeout
tock.usask.ca response version: timeout
ntp2.net.berkeley.edu response version: timeout
ntp.ru response version: timeout
clock.sjc.he.net response version: timeout
ntp3.jst.mfeed.ad.jp response version: timeout
sth1.ntp.se response version: timeout
svl2.ntp.se response version: timeout
time-c.as43289.net response version: timeout
ntp.ripe.net response version: timeout
2.debian.pool.ntp.org response version: 5
ntp0.as34288.net response version: timeout
europe.pool.ntp.org response version: timeout
0.gentoo.pool.ntp.org response version: timeout
1.ru.pool.ntp.org response version: timeout
0.opensuse.pool.ntp.org response version: timeout
0.fedora.pool.ntp.org response version: timeout
3.asia.pool.ntp.org response version: timeout
2.askozia.pool.ntp.org response version: timeout
1.centos.pool.ntp.org response version: timeout
1.arch.pool.ntp.org response version: timeout
0.freebsd.pool.ntp.org response version: timeout
1.amazon.pool.ntp.org response version: timeout
0.opnsense.pool.ntp.org response version: 5
1.dragonfly.pool.ntp.org response version: timeout
1.openbsd.pool.ntp.org response version: timeout
rackety.udel.edu response version: timeout
1.netbsd.pool.ntp.org response version: timeout
utcnist2.colorado.edu response version: timeout
navobs1.wustl.edu response version: timeout
sesku.planeacion.net response version: timeout
navobs1.oar.net response version: timeout
navobs1.gatech.edu response version: timeout
time.fu-berlin.de response version: timeout
ntp.dianacht.de response version: timeout
ptbtime1.ptb.de response version: timeout
0.jp.pool.ntp.org response version: 5
ntp.nict.jp response version: timeout
ntp.nic.cz response version: timeout
clock.uregina.ca response version: timeout
ntp.neel.ch response version: timeout
fpga-ntp-trial.elab.sakura.ad.jp response version: 5
ntp.i2t.ehu.eus response version: timeout
ntp.neu.edu.cn response version: timeout
ntps1.pads.ufrj.br response version: timeout
ntp.nict.jp response version: timeout
time1.esa.int response version: timeout
ntp.shoa.cl response version: timeout
ats1.e-timing.ne.jp response version: timeout
ntp.nc.u-tokyo.ac.jp response version: timeout
ntp1.tohoku.ac.jp response version: timeout
ntp1.jpix.ad.jp response version: timeout
s2csntp.miz.nao.ac.jp response version: timeout
ntp.tut.ac.jp response version: timeout
stdtime.gov.hk response version: timeout
ntp.ntsc.ac.cn response version: timeout
time-a.stanford.edu response version: timeout
tick.stdtime.gov.tw response version: timeout
time.edu.cn response version: timeout
ntp0.cam.ac.uk response version: timeout