relay-us.letter.is has no NS records.
NS records for this zone are defined at letter.is.
NS records for this zone are defined at letter.is.
Question and response
Question
dig relay-us.letter.is. NS
Answer
The response has no answer records.
Authority
letter.is. 3600 SOA dns1.technofaq.org. hostmaster.letter.is. 2026031002 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0