signup.pair.net has no CNAME records.
Question and response
Question
dig signup.pair.net. NS
Answer
The response has no answer records.
Authority
pair.net. 2465 SOA ns1.pair.com. root.pair.com. 2024024395 3600 300 604800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0