2600:1803:10a::5
2600:1803:10b::7e
2600:1803:10c::72
2600:1803:10d::5b

mx: alt1.aspmx.l.google.com.castr.com.
mx: alt2.aspmx.l.google.com.castr.com.
mx: alt4.aspmx.l.google.com.
mx: aspmx.l.google.com.castr.com.
ns: ns11.constellix.com.
ns: ns21.constellix.com.
ns: ns31.constellix.com.
ns: ns41.constellix.net.
ns: ns51.constellix.net.
ns: ns61.constellix.net.