mx.blkprvdr.com has no NS records.
NS records for this zone are defined at blkprvdr.com.
NS records for this zone are defined at blkprvdr.com.
Question and response
Question
dig mx.blkprvdr.com. NS
Answer
The response has no answer records.
Authority
blkprvdr.com. 600 SOA ns1.zohocorp.com. dnsadmin.vtitan.com. 2025052400 7200 1800 1209600 1800
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0