spfaus-b.zixsmbhosted.com has no NS records.
NS records for this zone are defined at zixsmbhosted.com.
NS records for this zone are defined at zixsmbhosted.com.
Question and response
Question
dig spfaus-b.zixsmbhosted.com. NS
Answer
The response has no answer records.
Authority
zixsmbhosted.com. 600 SOA ns.zixcorp.com. noc.zixcorp.com. 2025081101 3600 300 604800 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0