c1.multacom.com has no CNAME records.
Question and response
Question
dig c1.multacom.com. NS
Answer
The response has no answer records.
Authority
multacom.com. 2084 SOA ns2.multacom.com. webmaster.multacom.com. 2025082901 43200 900 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0