dc2snat02.fm-hosted.com has no CNAME records.
Question and response
Question
dig dc2snat02.fm-hosted.com. NS
Answer
The response has no answer records.
Authority
fm-hosted.com. 5413 SOA udns1.ultradns.net. hostmaster.guardiananalytics.com. 2026012300 10800 900 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0