OpenPortCheck.org's DNS Lookup tool helps you perform a full DNS health check for your domain.
It automatically scans critical records like NS, SOA, MX, and WWW A records,
giving you instant insight into your DNS configuration and potential mail server issues.
NS (Name Server) records tell the internet which servers are responsible for handling your domain’s DNS queries.
SOA (Start of Authority) defines the master DNS server and contains important timing and version information for zone data.
MX (Mail Exchange) records determine where your domain’s email should be delivered — crucial for reliable mail delivery.
WWW A record points your domain (like www.example.com) to a specific server IP address — required for website accessibility.
