Checker Tools

SSL Lookup

Verify the SSL/TLS certificate on any domain in seconds. Our SSL lookup tool connects directly to the server and returns certificate issuer, subject, SANs, expiry date, protocol version, and whether the certificate chain is trusted by major browsers.

SSL Lookup

Free & no signup required

Results

How to Use This Tool
  1. Enter a domain name (without https://)
  2. Click "Check SSL"
  3. Review certificate issuer, validity dates, and days remaining
  4. View Subject Alternative Names (SANs)
What is SSL Lookup?
SSL (Secure Sockets Layer) and its successor TLS (Transport Layer Security) are cryptographic protocols that encrypt data between a user's browser and a web server. An SSL certificate is a digital document issued by a Certificate Authority (CA) that authenticates a server's identity. SSL lookup tools connect to a domain and extract the certificate details — including who issued it, what domains it covers (Subject Alternative Names), when it expires, and whether it chains correctly to a trusted root CA. Expired or misconfigured certificates cause browser warnings that drive visitors away and signal poor security hygiene.
Related Tools
DNS Lookup
Checker Tools
WHOIS Lookup
Checker Tools
HTTP/2 Checker
Checker Tools
Powered by Digital Checkmark IT Services