ga.antietamcable.com has no CNAME records.
Question and response
Question
dig ga.antietamcable.com. NS
Answer
The response has no answer records.
Authority
antietamcable.com. 10800 SOA ns1.myactv.net. root.ns1.myactv.net. 2025091501 10800 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0