ns13.anubisnetworks.com has no CNAME records.
Question and response
Question
dig ns13.anubisnetworks.com. NS
Answer
The response has no answer records.
Authority
anubisnetworks.com. 600 SOA ns11.anubisnetworks.com. hostmaster.anubisnetworks.com. 2025012428 7200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0