dynamic.v4.ziggo.nl has no NS records.
NS records for this zone are defined at ziggo.nl.
NS records for this zone are defined at ziggo.nl.
Question and response
Question
dig dynamic.v4.ziggo.nl. NS
Answer
The response has no answer records.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0