DNS Lookup

What is a DNS Lookup?

A DNS (Domain Name System) lookup queries the DNS servers to retrieve the DNS records associated with a domain name. DNS is the backbone of the internet, translating human-readable domain names into IP addresses that computers use to communicate with each other.

DNS Record Types Explained

• A Record — Maps a domain to an IPv4 address. This is the most fundamental DNS record that directs traffic to your server.
• AAAA Record — Maps a domain to an IPv6 address, the next-generation internet protocol with a vastly larger address space.
• CNAME Record — Creates an alias that points one domain name to another. Commonly used for subdomains like www.
• MX Record — Specifies the mail servers responsible for receiving email for the domain, along with priority values.
• NS Record — Identifies the authoritative nameservers for the domain, which hold the definitive DNS records.
• TXT Record — Holds arbitrary text data, often used for domain verification, SPF email authentication, and DKIM signatures.
• SOA Record — Contains administrative information about the zone, including the primary nameserver, contact email, and refresh intervals.
• CAA Record — Specifies which Certificate Authorities are permitted to issue SSL/TLS certificates for the domain.

When to Use This Tool

Use the DNS Lookup tool to troubleshoot domain resolution issues, verify DNS propagation after making changes, audit your domain's DNS configuration, or investigate how a domain is set up. It's essential for webmasters, system administrators, and anyone managing domain infrastructure.