ftp2.hostia.net has no NS records.
NS records for this zone are defined at hostia.net.
NS records for this zone are defined at hostia.net.
Question and response
Question
dig ftp2.hostia.net. NS
Answer
The response has no answer records.
Authority
hostia.net. 3600 SOA ns1.hostia.net. server.hostia.net. 2022052518 14400 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0