DNS Lookup

DNS lookup is the process of querying the Domain Name System to retrieve the records associated with a domain name. When you type a URL like example.com, your computer performs a DNS lookup to find the IP address (or other records) that correspond to that domain. This tool lets you perform those lookups manually for any domain.

Common uses include verifying MX records for email configuration, checking if A or AAAA records point to the correct IP, debugging DNS propagation after changes, and understanding how a domain is configured.

A records map domains to IPv4 addresses. AAAA records map to IPv6. MX records specify mail servers for email delivery. NS records point to authoritative name servers. TXT records hold arbitrary text, often used for SPF, DKIM, or domain verification. CNAME records alias one domain to another. SOA records contain zone authority info. SRV records define services (e.g., SIP, XMPP) by host and port.

Each record type serves a specific purpose. Most websites need at least A (or AAAA) and often NS. Email requires MX. Use this tool to inspect what records a domain has.

Traditional DNS uses unencrypted UDP, so anyone on the network can see which domains you're looking up. DNS-over-HTTPS (DoH) sends queries over HTTPS, encrypting them. Cloudflare's 1.1.1.1 DoH service is used by this tool. Your queries are encrypted in transit. Cloudflare has a strong privacy policy and doesn't log personal data. For maximum privacy, run DNS lookups locally with dig or nslookup.