zeus.parabolanet.com has no CNAME records.
Question and response
Question
dig zeus.parabolanet.com. NS
Answer
The response has no answer records.
Authority
parabolanet.com. 5844 SOA ns1.parabolanet.com. root.parabolanet.com. 20181259 28800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0