hostmaster.conwaycorp.net has no CNAME records.
Question and response
Question
dig hostmaster.conwaycorp.net. NS
Answer
The response has no answer records.
Authority
conwaycorp.net. 2560 SOA ns.conwaycorp.net. hostmaster.conwaycorp.net. 1771963394 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0