itdocs.telcove.com has no CNAME records.
Question and response
Question
dig itdocs.telcove.com. NS
Answer
The response has no answer records.
Authority
telcove.com. 3393 SOA ns9.customer.level3.net. dns.level3.net. 2025053101 10800 3600 2592000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0