Apex domains cannot have CNAME records.
Question and response
Question
dig fairpoint.com. NS
Answer
fairpoint.com. 2 NS ns1.myfairpoint.net.
fairpoint.com. 2 NS ns3.myfairpoint.net.
fairpoint.com. 2 NS ns2.myfairpoint.net.
fairpoint.com. 2 NS ns4.myfairpoint.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0