SSL Certificate Inquiry: Check Your Site's Security

SSL certificate inquiry is the fastest way to check the security status of your website. You can check the SSL status of both your own site and the sites you visit using several different methods.

How to Tell If You Have an SSL Certificate?

The easiest ways to understand whether a website has an SSL certificate:

1. Check the Address Bar

• 🔒 If the lock icon appears: The site has an SSL certificate and the connection is encrypted
• ⚠️ "Not Secure" If it says:There is no SSL certificate on the site or it is faulty
• HTTPS: URL "https://" If it starts with , it means SSL is active
• HTTP: URL "http://" If it starts with , it means there is no SSL

2. Click on the Lock Icon

You can see the certificate details by clicking on the lock icon in the browser:

• Certificate owner (domain name)
• Certificate issuing organization (CA)
• Validity dates (start and end)
• Encryption type and key length

Online SSL Inquiry Tools

For more detailed SSL testing, you can use online tools:

• DataSSL SSL Checker: Fast and comprehensive SSL check. Checks certificate validity, chain and configuration errors.
• SSL Labs (Qualys): A detailed SSL testing tool. It gives security scores between A+ and F. Checks protocol support, encryption strength and known vulnerabilities.
• SSL Shopper Checker: Fast certificate chain check and expiration date notification.

Seeing SSL Certificate Details in the Browser

SSL Checking in Chrome

1. Open the site and click on the site information icon in the address bar (a lock icon in older versions)
2. Click on the "Connection is secure" message
3. Click on the "Certificate is valid" link
4. In the window that opens, examine the General and Details tabs

SSL Checking in Firefox

1. Click on the lock icon
2. Click the arrow next to "Connection is secure"
3. Click the "More information" button
4. From the Security tab, press the "View Certificate" button

SSL Query with Command Line

For advanced users, SSL checking can be done with the OpenSSL command line tool:

• Seeing certificate information: openssl s_client -connect example.com:443
• Certificate expiration date: openssl s_client -connect example.com:443 2>/dev/null | openssl x509 -noout -dates
• Certificate details: openssl s_client -connect example.com:443 2>/dev/null | openssl x509 -noout -text

What Should You Pay Attention to When Querying SSL?

• Validity date: Make sure the certificate has not expired
• Domain match: The certificate must match your site's domain name
• Certificate chain: Check that intermediate certificates are complete
• Protocol version: Verify that TLS 1.2 or TLS 1.3 is used
• Encryption strength: 256-bit encryption and 2048-bit RSA key are considered standard
• HSTS:Check if HTTP Strict Transport Security header is active

Frequently Asked Questions

How do I know if I have an SSL certificate?

Open your website in the browser. Lock icon and "https://" in the address bar. If you see it, your SSL certificate is active.

When does my SSL certificate expire?

You can find out the expiration date of your certificate by clicking on the lock icon in the browser or with our SSL Checker tool.

Conclusion

Querying an SSL certificate is both simple and important. You can detect possible security problems in advance by regularly checking the status of your certificate.

Check the security status of your site immediately with DataSSL SSL Checker.