birch.prod.bigleaf.net has no NS records.
NS records for this zone are defined at bigleaf.net.
NS records for this zone are defined at bigleaf.net.
Question and response
Question
dig birch.prod.bigleaf.net. NS
Answer
The response has no answer records.
Authority
bigleaf.net. 600 SOA bigleaf.net. admin.bigleaf.net. 1772064000 3600 120 604800 600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0