NS4.MegaLink.com has no CNAME records.
Question and response
Question
dig NS4.MegaLink.com. NS
Answer
The response has no answer records.
Authority
megalink.com. 1136 SOA ns2.megalink.com. jcgalvez.megalink.com. 2024082077 28800 7200 2419200 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0