cas01.pin.se has no NS records.
NS records for this zone are defined at pin.se.
NS records for this zone are defined at pin.se.
Question and response
Question
dig cas01.global.pin.se. NS
Answer
The response has no answer records.
Authority
global.pin.se. 3600 SOA dc03.global.pin.se. hostmaster.global.pin.se. 2017294708 30 60 86400 3600
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0