auth.roch.ny.frontiernet.net has no CNAME records.
Question and response
Question
dig auth.roch.ny.frontiernet.net. NS
Answer
The response has no answer records.
Authority
ny.frontiernet.net. 5119 SOA auth.roch.ny.frontiernet.net. hostmaster.frontiernet.net. 2602180008 1800 300 604800 21600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0