SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for leo-schmidt.info

Valid
Issued by (CA)
Let's Encrypt
Subject
leo-schmidt.info
Valid from
Aug 21, 2026
Valid until
Nov 19, 2026 (40 days remaining)
Public key
RSA 2048-bit
Serial
06DE6471165829301FE5B11F018F17961C5F
SHA-256 fingerprint
33:76:A6:E5:8F:77:00:0F:1B:37:1B:3E:3B:BD:12:D8:BC:3C:33:8F:AE:CC:73:F6:61:31:A8:BB:F3:5D:6D:9D
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
leo-schmidt.info, www.leo-schmidt.info

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

This certificate has been served since Oct 6, 2026.

Never get surprised by leo-schmidt.info's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch leo-schmidt.info continuously, notifying you the moment anything moves across all three signals:

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.