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    DNS Lookup

    Query DNS records for any domain instantly. Powered by Cloudflare's secure DNS-over-HTTPS.

    A: Maps a domain to an IPv4 address

    What Is DNS?

    The Domain Name System (DNS) is the internet's phone book. It translates human-readable domain names like example.com into machine-readable IP addresses like 93.184.216.34.

    Common DNS Record Types

    A

    Maps a domain name to an IPv4 address. The most fundamental DNS record type.

    example.com → 93.184.216.34

    AAAA

    Maps a domain to an IPv6 address. IPv6 uses 128-bit addresses for the modern internet.

    example.com → 2606:2800:220:1:248:1893:25c8:1946

    CNAME

    Canonical Name record — creates an alias from one domain to another.

    www.example.com → example.com

    MX

    Mail Exchange record — specifies mail servers responsible for accepting email.

    example.com → mail.example.com (priority 10)

    TXT

    Text records used for domain verification, SPF anti-spam, and DKIM email signing.

    v=spf1 include:example.com ~all

    NS

    Name Server records — identify which DNS servers are authoritative for a domain.

    example.com → ns1.exampledns.com

    What a DNS lookup shows you

    A lookup asks a resolver what a domain currently points to and shows the answer exactly as it was returned, including the record type and its TTL — how long the answer may be cached before it is fetched again.

    That makes it the fastest way to confirm a change has propagated, to check where mail for a domain is delivered, or to verify that a domain resolves at all when a site appears to be down.

    Why DNS performance matters

    Every new hostname on a page needs a lookup before a single byte of content can be requested. A slow resolver therefore adds delay to the start of a page load, which is felt as sluggish browsing even on a fast connection.

    DNS does not affect your bandwidth. Changing resolver can shorten the lookup step, but download and upload speeds stay the same — and in games, where traffic goes directly to a server address, DNS is not in the path at all.

    When to use this tool

    • A site does not load and you want to know whether the name resolves.
    • You changed hosting or mail provider and need to confirm the new records are live.
    • You want to compare how two resolvers answer for the same domain.
    • You are checking SPF, DKIM or verification strings stored in TXT records.
    • You need the authoritative name servers for a domain.