mx12.blackberry.com NS records

NS Authoritative DNS server
1d
mx12.blackberry.com has no NS records.
NS records for this zone are defined at blackberry.com.

Question and response

Question

dig mx12.blackberry.com. NS

Answer

The response has no answer records.

Authority

blackberry.com. 86400 SOA ns-770.awsdns-32.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

Additional

. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0