SSL Lookup

About Our SSL Lookup Tool

The SSL Lookup tool allows you to inspect and analyze the SSL/TLS certificate of any website. Whether you want to verify the security status of your own domain or ensure that a website uses a valid and trusted certificate, this tool provides clear and accurate information within seconds. By performing an SSL check, you can confirm if a website is protected with HTTPS, identify possible security issues, and make sure the certificate has not expired or been misconfigured.

What This Tool Can Show

Our SSL Lookup tool retrieves detailed information about the SSL certificate installed on a domain. This helps you understand whether the website is securely encrypted and properly authenticated.

• Certificate Status: Checks if the certificate is active, expired, or revoked.
• Issuer: Identifies the Certificate Authority (CA) that issued the certificate.
• Expiration Date: Shows when the certificate will expire.
• Valid From / To: Displays the certificate’s full validity period.
• Domain Coverage: Lists domains and subdomains the certificate protects (SAN records).
• Encryption Strength: Details the encryption algorithms, key length, and security level.
• Certificate Type: Highlights if the cert is DV, OV, or EV.
• Serial Number: Useful for validation and troubleshooting.
• Fingerprint (SHA-1 / SHA-256): Helps verify certificate authenticity.
• OCSP / Revocation Status: Indicates if the certificate has been revoked by the CA.

Why SSL Lookup Is Important

SSL certificates are essential for secure web browsing, protecting data, and building trust with users. A broken, expired, or insecure certificate can result in browser warnings, security risks, and website downtime. With the SSL Lookup tool, you can quickly verify if a domain’s SSL configuration meets modern security standards.

• Verify whether a website uses HTTPS correctly.
• Detect expired or soon-to-expire SSL certificates.
• Check certificate details for compliance and auditing.
• Identify weak encryption or outdated TLS versions.
• Confirm if a certificate is issued by a trusted CA.
• Review SAN entries to ensure all domains are protected.

Common Problems You Can Detect

SSL issues can seriously impact user security and website functionality. Using an SSL Lookup helps you discover:

• Expired certificates causing browser “Not Secure” warnings.
• Incorrect domain names resulting in SSL mismatch errors.
• Weak encryption keys vulnerable to attacks.
• TLS configuration problems impacting performance or compatibility.
• Revoked certificates that should not be trusted.
• Missing intermediate certificates causing trust chain errors.

How SSL/TLS Validation Works

When a browser connects to a website, it validates the SSL certificate by checking the issuing authority, the certificate’s expiration date, and the trust chain. It also verifies encryption strength and ensures the certificate matches the requested domain. The SSL Lookup tool replicates these checks, providing a clear and readable breakdown of all certificate details.

Advanced SSL Insights

For users who need deeper security insights, the tool can also reveal protocol versions, handshake details, supported cipher suites, and information about the certificate’s public key. These insights are especially useful for developers, server administrators, and cybersecurity professionals ensuring maximum HTTPS security.

Final Notes

SSL encryption is a critical part of website security. By regularly checking SSL certificates, you can prevent security warnings, protect user data, and ensure your website remains fully trusted by all modern browsers. The SSL Lookup tool offers a fast, reliable way to validate certificate information and troubleshoot issues before they affect your visitors.