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 mike-hefte.de

Valid
Issued by (CA)
DigiCert Inc
Subject
mike-hefte.de
Valid from
Jul 22, 2026
Valid until
Oct 19, 2026 (84 days remaining)
Public key
RSA 2048-bit
Serial
0342ED9B9D378E8D55D2AB7A527771E9
SHA-256 fingerprint
6D:20:FE:BE:61:E1:45:51:19:41:FD:DD:47:47:C8:CF:11:71:AE:26:3B:AB:DD:D8:B0:7E:81:BF:E3:5A:76:4D
Chain
Encryption Everywhere DV TLS CA - G2 → DigiCert Global Root G2
Subject Alternative Names (1)
mike-hefte.de

Certificate Authority Authorization (CAA)

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

Never get surprised by mike-hefte.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch mike-hefte.de 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.