NTP versions in production use?

Sun Jul 12 04:40:15 UTC 2015

ntpd - NTP daemon program - Ver. 4.2.6
Colins-iMac:~ colinj$ uname -a
Darwin Colins-iMac.home 15.0.0 Darwin Kernel Version 15.0.0: Sun Jun 28 00:25:56 PDT 2015; root:xnu-3247.1.36~7/RELEASE_X86_64 x86_64
(10.11 osx el capitan)

-bash-4.2$ uname -a
Linux oraclelinux 3.8.13-68.1.2.el7uek.x86_64 #2 SMP Mon Mar 30 11:45:57 PDT 2015 x86_64 x86_64 x86_64 GNU/Linux
ntpd - NTP daemon program - Ver. 4.2.6p5

2015:07:11-01:05:57 cloudsophosvm ntpd[17219]: ntpd 4.2.6p5 at 1.2349 Tue Feb  4 13:03:59 UTC 2014 (1)
Sophos UTM 9.313-3


Colin