About this tool
Inspect CAA records before SSL issuance, certificate authority changes, or DNS cleanup so regular and wildcard certificate policies are visible in one report.
CAA Record Checker inspects Certificate Authority Authorization records for a domain. It shows which certificate authorities are allowed to issue regular or wildcard certificates, whether incident reporting contacts are configured, and whether any flags or tags need closer review.
- Looks up CAA records for a domain and displays flags, tags, and values.
- Groups issue, issuewild, and iodef records into certificate authority and incident contact sections.
- Flags missing issuance restrictions, missing wildcard policy, missing iodef contacts, unusual flags, and uncommon tags.
How to use CAA Checker
Enter a domain or URL, run the lookup, and review the issue, issuewild, and iodef sections. Compare the listed certificate authorities with your SSL provider before certificate renewals, authority migrations, or DNS hardening work.
When this tool is useful
- Check a domain before changing certificate authorities or SSL automation providers.
- Review wildcard issuance policy before adding or renewing *.example.com certificates.
- Audit DNS hardening alongside SSL Certificate Checker and DNS Lookup Checker.
Practical tips
- Keep issue records aligned with your actual certificate authority, such as letsencrypt.org or your managed CA.
- Add issuewild when wildcard certificate issuance should be stricter than regular certificate issuance.
- Use iodef when your team wants a contact path for certificate issuance policy reports.
Examples you can test
These examples show the kind of real input and reviewed output this tool is designed to support. Use them as a starting point before pasting your own production content, then compare the output with the destination system that will use the result. The goal is not only to produce a value, but to make the input assumptions, output format, and review step clear enough that the result can be trusted in a real workflow.
Check SSL authority policy
Example input
example.com
Expected output
CAA issue, issuewild, iodef records, and issuance warnings
Useful before renewing certificates or switching certificate authorities.
Review wildcard restrictions
Example input
Domain using wildcard certificates
Expected output
issuewild policy and certificate authority values
Wildcard issuance can follow regular issue policy unless issuewild is configured.
Validation checklist
Run through these checks before copying the result into a CMS, codebase, spreadsheet, campaign, support ticket, or production document. Small formatting differences, unit assumptions, hidden whitespace, and platform-specific rules are common sources of mistakes in quick browser tools, so the final review should happen in the same context where the output will be used.
- Confirm issue records include your active certificate authority.
- Review issuewild before requesting wildcard certificates.
- Add iodef contacts when certificate incident reporting matters.
- Avoid stale CAA records that block legitimate renewals.
- Pair CAA review with SSL certificate and DNS checks before launch.
Why people use this tool
CAA records reduce certificate issuance risk by telling public certificate authorities who is allowed to issue for a domain. A missing or stale record can allow broader issuance than intended, while an overly strict record can block legitimate certificate renewals during launches or incident response.
Related search intents
caa record checker, caa checker, caa lookup, check caa record, dns caa checker.