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🔒 SSL Grade Checker

Get an SSL/TLS configuration grade (A+ to F) with detailed scoring and security recommendations.

Analyzing SSL configuration...

SSL Analysis Results

API Endpoint

GET /v1/ssl/grade?domain=example.com

Interactive intelligence tool

Run the check, then ship the workflow

Use the browser tool for a fast answer, then move the same logic into scripts, monitoring, or product flows when it becomes repeatable.

Start with the live form

Enter a domain, URL, IP, email, or record and get a focused result without setup.

Review decision-ready signals

Outputs highlight statuses, risks, records, and next actions instead of raw provider noise.

Automate the winning workflow

Use the request and response examples to turn a one-off check into an API call or recipe.

Used by people at amazing companies

What this tool helps you decide

Each page is shaped around a practical operational question, not just a raw lookup.

Signal

See the current DNS, registration, security, pricing, or reputation evidence.

Context

Compare the result with related checks so the next move is easier to trust.

Action

Copy examples, open linked tools, or move into API documentation when you need scale.

Trust signals before you integrate

Transparent docs, authenticated requests, and visible reliability details make it easier to evaluate DomScan before you ship.

Uptime API artifacts

OpenAPI, Swagger, Postman, CLI, SDK, and MCP links are one click away.

API keys Protected access

Authenticated endpoints use API keys with clear credit costs before you call them.

Free allowance Sign Up for Free

Start with 10,000 monthly credits and upgrade only when usage grows.

Active Example Request

Start from the curl and HTTP samples, then map the parameters into your application code.

Key Features

SSL Grade Checker

Get a quick A+ to F rating for the domain's TLS configuration.

Has Certificate

See whether the site presents a certificate and whether HSTS is enabled.

Issues

Review the main findings before you start remediation.

Example Request

GET /v1/ssl/grade?domain=example.com HTTP

GET /v1/ssl/grade?domain=example.com

Example Response

SSL Analysis Results JSON

{
  "grade": "A",
  "score": 92,
  "has_certificate": true,
  "hsts_enabled": true,
  "issues": ["Missing OCSP stapling"]
}

Built from the same API surface

The browser experience previews DomScan's structured endpoints, so teams can validate a use case before writing code.

Open API docs All Tools

Frequently Asked Questions

What affects the SSL grade?

Certificate validity, TLS protocol support, HSTS, cipher strength, and common configuration issues all influence the final grade.

Why is the score lower than the grade suggests?

The letter grade is a summary. The numeric score reflects the number and severity of findings, so two sites with the same grade can still score differently.

What should I fix first?

Start with missing certificates, protocol downgrade issues, and HSTS. Then review the remaining warnings and weak cipher settings.