Free DNS Lookup Tool

A DNS lookup queries the Domain Name System to retrieve records associated with a domain name. It translates human-readable domain names (like example.com) into IP addresses and other records that computers use to route traffic, deliver email, and verify domain ownership. This tool uses Google's public DNS-over-HTTPS API to perform lookups directly from your browser.

Common DNS record types include: A (maps a domain to an IPv4 address), AAAA (maps to an IPv6 address), CNAME (creates an alias pointing to another domain), MX (specifies mail servers for the domain), TXT (holds arbitrary text, often used for SPF, DKIM, and domain verification), NS (identifies the authoritative name servers), SOA (contains zone administration information), PTR (reverse DNS, maps IP to domain), SRV (specifies service locations), and CAA (controls which Certificate Authorities can issue SSL certificates for the domain).

DNS propagation typically takes anywhere from a few minutes to 48 hours, though most changes propagate within 1-4 hours. The actual time depends on the TTL (Time to Live) value set on the previous records, how aggressively DNS resolvers cache records, and how the change is distributed across global DNS infrastructure. Lowering your TTL before making changes can help speed up propagation.

TTL (Time to Live) is a value in seconds that tells DNS resolvers how long to cache a record before requesting a fresh copy from the authoritative name server. A lower TTL means changes propagate faster but generates more DNS queries. Common TTL values range from 300 seconds (5 minutes) to 86400 seconds (24 hours). When planning DNS changes, it is good practice to lower the TTL ahead of time so the transition is smoother.

Yes, this DNS lookup tool is completely free with no signup required. It runs entirely in your browser using Google's public DNS-over-HTTPS API, so your queries are fast and reliable. No data is stored on our servers, and your query history exists only in your current browser session.