testsmtp.FreeBit.NET has no NS records.
NS records for this zone are defined at FreeBit.NET.
NS records for this zone are defined at FreeBit.NET.
Question and response
Question
dig testsmtp.FreeBit.NET. NS
Answer
The response has no answer records.
Authority
FreeBit.NET. 600 SOA NS21.FreeBit.NET. root.FreeBit.NET. 2026012601 14400 900 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0