Domain Health Score

Get an A-F health grade for any domain across DNS, SSL, mail authentication, and security headers. Free, comprehensive domain audit.

About this Domain Health Score tool

CheckHub aggregates DNS, SSL, mail authentication (SPF/DMARC), and HTTP security signals into a single A-F grade with itemized findings.

How to use the Domain Health Score

Step 1. Enter a domain.
Step 2. Read the grade and drill into each failing category.

Frequently asked questions

How is the grade calculated?: Each category contributes a weighted score: DNS basics 20%, SSL 25%, mail auth 25%, security headers 20%, performance 10%.

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