o2.smtp.overgroup.com NS records

NS Authoritative DNS server
1m
o2.smtp.overgroup.com has no NS records.
NS records for this zone are defined at overgroup.com.
trace o2.smtp.overgroup.com NS records for overgroup.com

Question and response

Question

dig o2.smtp.overgroup.com. NS

Answer

The response has no answer records.

Authority

overgroup.com. 60 SOA ns1-02.azure-dns.com. hostmaster.overgroup.com. 2010071006 3600 600 604800 60

Additional

. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0