ns2.serveurcom.com has no NS records.
NS records for this zone are defined at serveurcom.com.
NS records for this zone are defined at serveurcom.com.
Question and response
Question
dig ns2.serveurcom.com. NS
Answer
The response has no answer records.
Authority
serveurcom.com. 1800 SOA ns1.planet-work.com. nsadmin.planet-work.com. 2602160001 14400 3600 604800 1800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0