legacy-mail3.pair.net has no CNAME records.
Question and response
Question
dig legacy-mail3.pair.net. NS
Answer
The response has no answer records.
Authority
pair.net. 7200 SOA ns1.pair.com. root.pair.com. 2024024395 3600 300 604800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0