Domain Checker
One free report covering DNS, TLS, security headers and email deliverability.
Domain Checker runs the checks a technical person would run by hand and puts them in one page: DNS records, TLS certificate and expiry, HTTP security headers, and the email authentication trio of SPF, DKIM and DMARC.
The email section is the part most reports skip. A domain can have a valid certificate and still fail to deliver mail because DMARC is set to none or the SPF record has two entries. The report says which of those applies and what the record currently contains.
No signup and no API key. Useful when taking over a domain from someone else, after a migration, or when mail from your domain starts landing in spam.
Key features
- 01DNS records in one view
- 02TLS certificate and expiry check
- 03HTTP security headers
- 04SPF, DKIM and DMARC deliverability report
- 05No signup, no API key
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