msg-out.onevoice.co.uk has no CNAME records.
Question and response
Question
dig msg-out.onevoice.co.uk. NS
Answer
The response has no answer records.
Authority
onevoice.co.uk. 89 SOA ns1.onevoice.no. hostmaster.onevoice.no. 2024080600 28800 7200 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0