ns2.dns-h.com has no CNAME records.
Question and response
Question
dig ns2.dns-h.com. NS
Answer
The response has no answer records.
Authority
dns-h.com. 10800 SOA ns1.host-h.net. postmaster.your-server.co.za. 2021100303 86400 1800 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0