mx.pdxsocialhistoryguide.org has no NS records.
NS records for this zone are defined at pdxsocialhistoryguide.org.
NS records for this zone are defined at pdxsocialhistoryguide.org.
Question and response
Question
dig mx.pdxsocialhistoryguide.org. NS
Answer
The response has no answer records.
Authority
pdxsocialhistoryguide.org. 3600 SOA dns.pdxsocialhistoryguide.org. hostmaster.pdxsocialhistoryguide.org. 1247975094 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0