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DNS Lookup

See the DNS records of any domain, queried right now on public resolvers.

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Domain WHOISRegistrar, dates and DNS serversDNS PropagationHas your DNS change reached the world?Reverse DNSThe name (PTR) of an IP addressEmail Blacklist CheckIs your IP on a blacklist?

What this tool does

The DNS lookup shows the records published for a domain: which server it points to, who receives its email, which name servers answer for it and which verification texts are configured. The lookup runs right now, directly against public resolvers (Cloudflare, Google and Quad9), bypassing your ISP's cache.

How to read the result

  • A and AAAA: the site's IPv4 and IPv6 address. This is where the browser goes when someone types the domain. The TTL tells, in seconds, how long providers may cache the answer.
  • CNAME: an alias. The name points to another name, which in turn has the A or AAAA records.
  • MX: the servers that receive the domain's email. The lower number has priority.
  • NS: the authoritative name servers, that is, where the domain's DNS zone is hosted.
  • TXT: free-form texts, used for SPF, DKIM, DMARC and verifications by Google, Microsoft and other services.
  • SOA: zone control data, such as the primary server and the serial number, which changes on every edit.
  • CAA: which certificate authorities may issue SSL certificates for the domain.

Common problems

The site doesn't load after moving hosts. Check whether the A record already shows the new IP. If the old one still appears, the change wasn't saved or the TTL hasn't expired yet.

Emails don't arrive. Make sure MX records exist and point to your email provider. Without MX, nobody can deliver messages to the domain.

Emails land in spam. Look in the TXT records for one starting with v=spf1 and a DMARC record at _dmarc. Missing them hurts deliverability.

No records found. The domain may not be registered, may be suspended or may have the wrong name servers at the registry. Use the WHOIS lookup to check.

Frequently asked questions

How long does a DNS change take to show up?

It depends on the old record's TTL. With a 300-second TTL the change shows up within minutes; with a one-day TTL it can take up to 24 hours to reach every provider.

Why is the result here different from my computer?

Your computer and your ISP cache answers. This tool queries public resolvers on the spot, so it can show the new value before it reaches your network.

What is the difference between an A record and a CNAME?

An A record points the name straight to an IP address. A CNAME points the name to another name, which is then resolved to an IP.

What is TTL?

It is the time, in seconds, a resolver may keep the answer before asking again. Lower values make changes show up faster.

How do I check my domain's SPF?

Look in the list of TXT records for a line starting with v=spf1. It lists the servers allowed to send email on behalf of the domain.