What is it?
DNS Lookup shows where a domain points, which servers receive its email and whether TXT records for SPF, DKIM or site verification are live. Type a domain or paste a full link to see its A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records together, with how long each is cached (TTL) and whether the answer is signed with DNSSEC. Type an IP address for a reverse (PTR) lookup.
Who is it for?
Website owners connecting a domain to Blogger or GitHub Pages, people setting up business email, and developers checking a DNS change.
How to use it
- Type a name in Domain, such as example.com. A full link like https://www.example.com/path works too.
- Choose the Record type: All common records or one of A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, SRV, PTR, DS, DNSKEY, HTTPS.
- Under Ask, pick Google DNS or Cloudflare, then press Look up.
- Read the Type, Value and TTL of each record.
Checking email setup
Choose MX to see mail servers, and TXT to find SPF (it starts v=spf1). Look up _dmarc.yourdomain.com as TXT for DMARC, and selector._domainkey.yourdomain.com for DKIM (your email provider tells you the selector). Only the domain name is sent, over encrypted HTTPS, to the resolver you pick.
Errors and how to fix them
- “Type a domain name first” or “… is not a valid domain name”: check for spaces or stray symbols.
- “This domain does not exist (NXDOMAIN)”: the name is misspelt, or the domain has expired. Check the spelling and try again.
- No … records found for …: that record type is not set. For a subdomain, check its CNAME.
- Server failure (SERVFAIL): the domain’s own DNS is broken or not answering; check the nameservers at your registrar.
- “Could not reach the DNS service. Check your connection, or try the other resolver”
- Old values after a change: wait for the TTL shown, or compare Google and Cloudflare.
Open the tool: DNS Lookup
Still stuck?
Contact support. Tell us which tool or page you were using, what you tapped, what you saw, and your phone or computer and browser (for example: Android phone, Chrome). We reply by email.
Questions, or an error not listed here?
Tell us in the comments: what you were doing, the exact message you saw, and your device and browser. We read every comment and add new fixes to this article.