Free DNS & Email Tools
Start from the problem, get the right check
Check your domain's DNS, email and SSL setup without signing up. Type the domain once, pick the check you need, and the result shows the cause of the problem together with the fix.
Free Domain, DNS and Email Tools
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Whois Lookup
Domain owner and expiry date
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DNS Lookup
A, MX, TXT, NS records and propagation
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Punycode Converter
Convert international domains to punycode
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Bulk Domain Search
Check many domains in one go
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MX Lookup
Servers that receive your email
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SPF Record Checker
Who may send email for your domain
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DKIM Record Checker
Email signing key and its length
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DMARC Record Checker
Your policy against spoofed email
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SSL Checker
Certificate validity and expiry date
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CSR Decoder
Check your CSR before ordering SSL
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Password Generator
Generate strong, random passwords
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IP Lookup
Your IP address, location and ISP
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AI Visibility Checker
Can ChatGPT and other AIs read your site?
Frequently Asked Questions
About cost, limits and what happens to your data.
- Yes, every tool is free, and you don't need an account or to be an Atak Domain customer. Just type the domain and choose the check.
- The most common cause is a missing or broken SPF, DKIM or DMARC record. Start with the SPF Record Checker to make sure your senders are listed, then check your DKIM signature and DMARC policy; each tool shows the fix when it finds a problem.
- The DNS-based tools (DNS, MX, SPF, DKIM, DMARC) send the query from your browser straight to Google Public DNS and show the live answer. If you've just changed a record, the old value can linger in some caches until its TTL runs out.
- The DNS-based tools, CSR Decoder, punycode converter and password generator run in your browser; what you enter isn't sent to our server. Whois and IP lookups run through our server; to prevent abuse, Whois lookups have a daily limit.
- Yes. DNS records and Whois data are public, so you can check a supplier's email setup, a competitor's email provider or the expiry date of a domain you'd like to buy.
- Every result has a "What to do next" section, and each page lists problems with their fixes step by step. Records are edited in the panel where you manage your domain's DNS; if you get stuck, our support team is available every day.
Domain, email and SSL in one place
You've run the checks; now start with the right setup. .com domains start at $7.99, and Business Email adds the DNS records for you.