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 dewa-gmbh.de

Valid
Issued by (CA)
Sectigo Limited
Subject
*.dewa-gmbh.de
Valid from
May 30, 2026
Valid until
Dec 10, 2026 (35 days remaining)
Public key
RSA 2048-bit
Serial
D8EDBAF632DFB551E59CDCF5DCA3707E
SHA-256 fingerprint
74:19:AD:29:46:45:78:67:58:7D:40:1A:49:A6:24:E4:4D:C0:00:73:52:D0:6F:D3:CC:0D:94:7A:57:F4:D4:C2
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.dewa-gmbh.de, dewa-gmbh.de

Certificate Authority Authorization (CAA)

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

Never get surprised by dewa-gmbh.de's certificate expiring

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

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.