Certificates
Check the SSL and TLS certificate of any domain. See the issuer, validity window, expiry countdown, protocol version, cipher, subject alternative names, and the full chain.
Apex, subdomain, or URL. We figure it out.
What you get
See who issued the certificate and which name it was issued for, straight from the live handshake.
The valid from and valid to dates plus a countdown to expiry, so a certificate never lapses on you unnoticed.
The negotiated TLS version and cipher suite, so you can confirm the connection uses modern, strong cryptography.
Every subject alternative name the certificate covers and the chain up to the issuing authority.
An SSL and TLS certificate check connects to a domain and inspects the certificate it presents during the handshake. It tells you who issued the certificate, which names it covers, how long it is valid, and which protocol and cipher the server negotiated. digga performs the handshake live, so you see the certificate the server is actually serving right now, not a cached copy.
The issuer reveals which certificate authority signed it, the subject and subject alternative names show every hostname it is valid for, and the validity window shows when it starts and stops being trusted. The chain links the certificate to a trusted root. Together these fields tell you whether visitors will see a secure connection or a warning.
Expired certificates are one of the most common and most avoidable causes of outages and browser warnings. digga shows the exact valid to date and a countdown, so you can renew well ahead of time. Pair it with the DNS and email tools to confirm the whole domain stays healthy.
Modern sites should negotiate TLS 1.2 or TLS 1.3 with a strong cipher suite. Seeing the negotiated protocol and cipher lets you confirm a server is not falling back to outdated, weak cryptography, which matters for both security and compliance.
Keep digging
FAQ
Enter a domain to run the ssl and tls certificate checker now.
Apex, subdomain, or URL. We figure it out.