acglob.fifthns.com has no CNAME records.
Question and response
Question
dig acglob.fifthns.com. NS
Answer
The response has no answer records.
Authority
fifthns.com. 3600 SOA acglob.firstns.cc. support.anexia-it.com. 7 14400 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0