ns4.linuxmagic.com has no CNAME records.
Question and response
Question
dig ns4.linuxmagic.com. NS
Answer
The response has no answer records.
Authority
linuxmagic.com. 7134 SOA localhost. hostmaster.wizard.ca. 61279 86400 3600 3600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0