auth.lkv.mn.frontiernet.net has no CNAME records.
Question and response
Question
dig auth.lkv.mn.frontiernet.net. NS
Answer
The response has no answer records.
Authority
mn.frontiernet.net. 4464 SOA auth.roch.ny.frontiernet.net. hostmaster.frontiernet.net. 2603030002 10800 3600 604800 21600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0