DMARC Record Checker

Read a domain's DMARC policy and its tags. Enter an address or domain and run it. Calculators work offline in your browser, and lookups use public DNS and IP services.

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Input

Result

This lookup sends the domain or IP address you enter to public services (Cloudflare DNS, Google DNS, Quad9 and ipwho.is) to get the answer.

What DMARC Record Checker does

Read a domain's DMARC policy and its tags. Enter an IP address or domain and the result appears in seconds. Calculators run offline, and lookups ask public DNS and IP services.

DMARC Record Checker has one mode: Check DMARC.

How to use DMARC Record Checker

Type or paste the domain or IP address into the Input box.
Use the Check DMARC mode.
Press Run or hit Enter.
Read the result, then copy it.

About DMARC Record Checker

Network and DNS checks usually mean opening a terminal and remembering the right command. These tools give you the same answers in a browser, formatted so they are quick to read and share with a teammate or support team.

Lookups use well-known public services, and calculators such as subnet and CIDR tools run entirely on your device, so they also work when you are offline.

DMARC Record Checker FAQ

What is DMARC Record Checker?

DMARC Record Checker is a free online tool. Read a domain's DMARC policy and its tags. Enter an IP address or domain and the result appears in seconds. Calculators run offline, and lookups ask public DNS and IP services.

How do I use DMARC Record Checker?

Type or paste the domain or IP address into the Input box. Use the Check DMARC mode. Press Run or hit Enter. Read the result, then copy it.

Is DMARC Record Checker free to use?

Yes. It is completely free, with no usage limits, watermarks or paid tiers.

Do I need to sign up or install anything?

No. Open the page and start using it. There is no account, download or browser extension.

Is my data safe when I use DMARC Record Checker?

Calculators and converters run locally. Lookups send only the domain or IP address you enter to public services such as Cloudflare DNS, Google DNS, Quad9 and ipwho.is, and this site stores nothing.

What options does DMARC Record Checker include?

DMARC Record Checker has one mode: Check DMARC.

Does DMARC Record Checker work on my phone or tablet?

Yes. The layout adapts to any screen size, and the tool works in mobile browsers on iOS and Android.

Which browsers are supported?

Current versions of Chrome, Edge, Firefox and Safari. JavaScript must be enabled.

Can I use the output of DMARC Record Checker commercially?

Yes. The result is yours to use in personal and commercial projects without attribution.

Is there a limit on how much I can enter?

There is no fixed limit. Very large inputs depend on your device's memory and may feel slower on older phones.

How do I copy the result?

Click the Copy button above the Result box. For tools that transform text, Use as input moves the result back to the input so you can apply another change.

Can I use DMARC Record Checker offline?

No. Lookups need an internet connection to reach public DNS and IP services. The calculators and converters in the same collection work offline.

Why do I see an error or an empty result?

Check that the domain or address is typed correctly, without spaces or extra characters. A network error can also mean an ad blocker or firewall is blocking the lookup service.

How reliable are the results from DMARC Record Checker?

DNS answers come straight from public resolvers and reflect what they cache at that moment. IP location data is an estimate, usually accurate to the city or region, never to a street address.

Can DMARC Record Checker handle many items at once?

Calculators accept one value at a time unless the tool says otherwise. Lookups work on one domain or IP per request.

Where is DMARC Record Checker useful in real work?

Checking DNS records after a website or email change; Finding the provider and region of an IP address; Planning subnets and address ranges; Troubleshooting email delivery with MX, SPF and DMARC.

Which tools are related to DMARC Record Checker?

You may also like What Is My IP Address, IP Address Lookup, DNS Lookup, DNS Propagation Checker. All of them are free and work in the same way.

What is the difference between a public and a private IP address?

A public IP address is reachable on the internet and assigned by your provider. Private addresses such as 10.x.x.x, 172.16 to 172.31.x.x and 192.168.x.x are used inside local networks and are not routable on the internet.

How long do DNS changes take to show up?

It depends on the record's TTL (time to live). Many changes appear within minutes, but resolvers can keep the old answer until the TTL expires, which can take hours for long TTLs.

How accurate is IP geolocation?

It is an estimate based on registry and network data. It is usually right about the country and often the city, but it can point to the provider's hub instead of the real location.

Why do different DNS resolvers show different answers?

Each resolver caches records separately, so right after a change some still return the old value. Comparing resolvers is a quick way to see if a change has spread.

Does a VPN or proxy change my result?

Yes. Tools that show your own IP report the address of the VPN or proxy exit, because that is the address websites see.

What does p=reject mean in DMARC?

It tells receiving mail servers to reject messages that fail authentication. The other policies are none (monitor only) and quarantine (treat as suspicious).

How can I report a problem or suggest a tool?

Use the contact link in the footer. Bug reports and tool ideas are welcome, and popular requests are added regularly.