Free network tool
DNS Checker
Check DNS records and propagation across 25+ public DNS servers and the domain's own name servers. No ads, no signup.
About this DNS checker
The Domain Name System turns names like example.com into the IP addresses and settings computers use. This free DNS checker sends live queries to more than 25 public resolvers (Cloudflare, Google, Quad9, OpenDNS and more) and to your domain's own authoritative name servers, so you can confirm a change has propagated or troubleshoot website and email problems.
- A / AAAA: the IPv4 and IPv6 addresses of a host.
- MX: where email for the domain is delivered.
- NS: the authoritative name servers.
- TXT: SPF, DKIM, DMARC and domain verification values.
- CNAME: an alias to another name.
- SOA: zone authority and serial number.
- CAA: which certificate authorities may issue certificates.
- SRV / PTR: service locations and reverse lookups (enter an IP address for PTR).
Check a DNS change with an expected value
Changed a record? Type the new value under Expected value and search. Each server gets a green check when it returns your value and a red cross when it does not. Use contains for long TXT records and RegExp for patterns. Read more about DNS propagation and DNS record types.
Frequently asked questions
What is a DNS checker?
A DNS checker looks up the DNS records of a domain (A, AAAA, MX, NS, TXT, CNAME, SOA, CAA, SRV, PTR) from many public resolvers and from the domain's own authoritative name servers, so you can see what the rest of the internet sees.
Why check more than one DNS resolver?
After a DNS change, different resolvers hold cached copies for different lengths of time. Comparing Cloudflare, Google, Quad9, OpenDNS and others shows whether your change has propagated.
What is the expected value option?
Enter the value you set (an IP address, hostname or TXT string) and choose exact match, contains or regular expression. Every resolver gets a green check or red cross, so you see at a glance who has the new record.
What is the CD flag?
CD stands for Checking Disabled. It tells resolvers to return answers even if DNSSEC validation fails, which helps you tell a broken DNSSEC setup from a genuinely missing record.
How long does DNS propagation take?
Usually minutes to a few hours, depending on the TTL of the old record. Lower the TTL before a planned change to speed things up.
Is this DNS lookup tool free?
Yes. It is free, ad-free and needs no signup.
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