Advanced ACME Status Checker

Verify your domain's readiness for Let's Encrypt certificates. Check CAA records, DNS challenges, and connectivity. Totally Free

Everything You Need to Know About ACME Status

Master the prerequisites for automated certificate issuance. A comprehensive guide to understanding and fixing ACME validation issues.

What is ACME Status Checking?

The ACME (Automated Certificate Management Environment) protocol is the global standard used by Certificate Authorities (CAs) like Let's Encrypt, ZeroSSL, and others to automate the issuance and renewal of SSL/TLS certificates.

This Advanced ACME Status Checker is a specialized diagnostic tool designed to simulate the validation process that these CAs perform. Before a certificate can be issued, the CA must verify that you control the domain. This tool checks the critical "pre-flight" requirements—like CAA records, DNS configurations, and server reachability—to ensure your domain is ready specifically for the ACME challenge process.

Why Use This Tool?

  • Prevent FailuresIdentify blocking issues before they cause certificate renewal failures.
  • Debug FastPinpoint exact causes like 'CAA Blocking' or 'Port 80 Closed' instantly.
  • Migration SafetyVerify DNS propagation and server config when moving to a new host.
  • Totally FreeUnlimited checks for any number of domains, forever.

How It Works

1

We query global DNS servers to fetch your domain's A, AAAA, and CAA records.

2

We simulate an HTTP-01 challenge by attempting to connect to your server on Port 80.

3

We check for existing DNS-01 challenge TXT records.

4

We analyze the results against Let's Encrypt's strict requirements to give you a Pass/Fail status.

Understanding CAA Records

Certification Authority Authorization (CAA) records act as a security guard for your domain. They declare which CAs are allowed to issue certificates for your site.

Common Issue

If you have a CAA record for `digicert.com` but not for `letsencrypt.org`, Let's Encrypt will take this as a "Do Not Issue" command and block your request.

The DNS-01 Challenge

This verification method proves ownership by asking you to create a specific TXT record at `_acme-challenge.yourdomain.com`.

Did You Know?

This is the only challenge type that allows you to issue Wildcard Certificates (e.g., `*.example.com`). Our tool checks if these records are visible.

Frequently Asked Questions

My check failed. What now?

Review the specific error section above. If "CAA" is red, update your DNS records. If "HTTP Readiness" is red, check your server firewall (Port 80) or Nginx/Apache config.

Is this tool really free?

Yes! This checker is 100% free to use for personal and commercial projects. We do not store your domain data permanently or sell it.

What is the "HTTP-01" challenge?

It's the most common verification method. The CA sends a request to `http://yourdomain.com/.well-known/acme-challenge/token`. If your server answers correctly, you get the cert.

Does this check SSL installation?

No, this tool checks readiness to issue a certificate. To check an existing installed certificate, use our SSL Checker tool.

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