Check DNS records for any domain including A, MX, CNAME, TXT, and NS records.
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Dns Lookup Tool
Configure and use this tool in the full app.
More about the DNS Lookup Tool
Troubleshooting why a domain's DNS changes haven't propagated after switching providers usually comes down to checking NS records specifically, which nameservers are actually authoritative for a domain right now, a detail that matters during a delegation change in a way A or MX records simply don't address. This tool checks A, MX, CNAME, TXT, and NS records for any domain, built around the record types that matter for diagnosing DNS delegation and infrastructure issues specifically. Useful for confirming which nameservers are actually authoritative for a domain after a provider switch, checking whether an NS record change has actually propagated yet, or looking up a domain's core infrastructure records during a DNS migration.
Check DNS records for any domain including A, MX, CNAME, TXT, and NS records. The DNS Lookup Tool is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the DNS Lookup Tool?
Open the DNS Lookup Tool on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the DNS Lookup Tool free to use?
Yes. The DNS Lookup Tool is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the DNS Lookup Tool safe and private?
Yes. The DNS Lookup Tool processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
What kind of output does the DNS Lookup Tool produce?
The DNS Lookup Tool produces clean, formatted output that you can copy or download with a single click. The output is tailored to the tool's purpose — formatted code, converted data, transformed text, or processed media — and is ready for immediate use in your project or workflow.
Does the DNS Lookup Tool work on mobile devices?
Yes. The DNS Lookup Tool is designed to work on any device with a modern browser, including phones and tablets. The interface adapts to smaller screens, and the core functionality — paste input, transform, copy output — works the same way regardless of your device.
Does the DNS Lookup Tool make real network requests?
Only where the task requires it (for example, looking up a DNS record). The interface and any parsing happen in your browser, and Toolblip doesn't log the queries you make.
Does the DNS Lookup Tool make real network requests to the URLs I check?
Yes, where the diagnostic requires it. For HTTP header checks and DNS lookups, the tool makes real network requests from your browser. Toolblip does not log these requests. For operations that do not require network access, everything is handled client-side.
Can I use the DNS Lookup Tool offline?
Once the page has loaded, the DNS Lookup Tool continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.