mailserver.velocityonline.net has no NS records.
NS records for this zone are defined at velocityonline.net.
NS records for this zone are defined at velocityonline.net.
Question and response
Question
dig mailserver.velocityonline.net. NS
Answer
The response has no answer records.
Authority
velocityonline.net. 1800 SOA ds0.velocityonline.net. hostmaster.velocityonline.net. 2026010700 7200 900 2592000 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0