950.hostxtrem.com has no CNAME records.
Question and response
Question
dig 950.hostxtrem.com. NS
Answer
The response has no answer records.
Authority
hostxtrem.com. 2324 SOA ns1.hostxtrem.com. alberto\.garcia.aow.es. 2026022406 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0