SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dtkv-berlin.de
SSL/TLS Certificate
SSL/TLS Certificate for dtkv-berlin.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dtkv-berlin.de
- Valid from
- Oct 5, 2026
- Valid until
- Jan 3, 2027 (61 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05BE94BAD5928DC0426D9E6681202CD59608
- SHA-256 fingerprint
- 23:30:53:14:E1:F4:AC:BB:2E:60:31:E4:33:89:8E:96:1F:59:F7:8B:72:23:7A:E1:94:89:C7:72:77:BB:BC:14
- Chain
- YR1 → Root YR → ISRG Root X1
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 Sep 6, 2026.
Never get surprised by dtkv-berlin.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dtkv-berlin.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.