dns.bridgerush.com has no NS records.
NS records for this zone are defined at bridgerush.com.
NS records for this zone are defined at bridgerush.com.
Question and response
Question
dig dns.bridgerush.com. NS
Answer
The response has no answer records.
Authority
bridgerush.com. 3600 SOA dns.bridgerush.com. hostmaster.bridgerush.com. 1509127894 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0