CAA Lookup

Validate pasted CAA record lines, with no live DNS lookup.

Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.

CAA Lookup

How to use this tool

  1. Enter your values in the fields above.
  2. Press Generate to see the result.
  3. Use Load sample to try the worked example, Copy result to copy it, or Clear to start again.

Worked example

The sample has 2 lines, both valid: an issue record and an iodef record, with no live DNS lookup performed.

What this tool does not do / Limits

This validates only the record lines you paste. It performs no live DNS lookup and does not check any real domain.

Frequently asked questions

What tags are accepted?

issue, issuewild and iodef, with a quoted value.

What flag range is valid?

A whole number from 0 to 255.

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