MyIPScan

Website Security Tool

SSL Certificate Checker

Check certificate transparency records for a public hostname and review issuer, expiry, Subject Alternative Names, and hostname match signals. This is a limited certificate record check, not a full TLS security audit.

Check a certificate record

Enter one public domain or hostname. URLs are accepted only when they do not include credentials or custom ports.
Raw JSON
Trust note: this server-assisted check uses cached public certificate transparency records and does not require an account.


What this checks
MyIPScan queries public Certificate Transparency data for the hostname and selects the most relevant certificate record it can safely parse. When available, the result includes common name, issuer, SANs, issued date, expiry date, days remaining, and a hostname match signal.
What the results mean
An expiry warning means the selected certificate record is close to or past its not-after date. A hostname mismatch signal means the selected record did not list the checked hostname directly or through a matching wildcard name. These signals are useful, but they do not prove the full security posture of a website.
How to use this tool
  1. Enter a public hostname such as example.com or www.example.com.
  2. Review the expiry state, issuer, SANs, and hostname match result.
  3. Use CAA Lookup, DNS Lookup, Redirect Checker, Robots.txt Checker, Sitemap Checker, Canonical / Noindex Checker, Open Graph / Social Preview Checker, Structured Data / JSON-LD Validator, and Security Headers Checker for related website context.


FAQ
What is an SSL certificate?
An SSL/TLS certificate binds a hostname to public-key information so browsers can set up encrypted HTTPS connections and show certificate identity details.
How do I check certificate expiration?
Enter the domain or hostname. MyIPScan shows the selected public certificate record expiry date and days remaining when available.
Why does certificate mismatch happen?
A mismatch can happen when the hostname is not listed in the certificate common name or Subject Alternative Names, or when public CT data does not reflect the exact certificate currently served.
Does HTTPS always mean a website is safe?
No. HTTPS protects transport for a hostname, but it does not prove site content, owner identity, account safety, or full security posture.
What happens when a certificate expires?
Browsers may show a certificate warning and users may be blocked or discouraged from continuing until the operator renews or replaces the certificate.


Limitations
The current runtime does not expose direct TLS certificate inspection. This tool uses public Certificate Transparency records, with crt.sh as the primary source and a free Cert Spotter CT fallback when the primary source is unavailable or too slow. Results can lag behind what a server currently presents during a live TLS handshake. See the methodology for how MyIPScan labels limited checks.