doc170-eva52.evard.ch has no CNAME records.
Question and response
Question
dig doc170-eva52.evard.ch. NS
Answer
The response has no answer records.
Authority
evard.ch. 2867 SOA ns1.evard.ch. hostmaster.evard.ch. 2026020401 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0