SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
leo-breuer.de
SSL/TLS Certificate
SSL/TLS Certificate for leo-breuer.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- leo-breuer.de
- Valid from
- Sep 21, 2026
- Valid until
- Dec 20, 2026 (49 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06B172444CFB0BF4E3F4B40ECDE5D452A25A
- SHA-256 fingerprint
- 51:5C:36:A6:62:F4:A3:85:80:6B:23:6F:50:9E:5F:DA:7C:B2:14:5A:80:DC:0A:B5:BA:E6:5D:11:03:F8:86:1D
- 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.
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This is today's certificate. Turn on monitoring and we'll watch leo-breuer.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.
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