SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
esg-passau.de
SSL/TLS Certificate
SSL/TLS Certificate for esg-passau.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- esg-passau.de
- Valid from
- Jun 14, 2026
- Valid until
- Sep 12, 2026 (32 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06E19828D9068C2F288800FA87F9C2EEA4F6
- SHA-256 fingerprint
- 43:B9:15:DA:38:34:61:30:05:5C:F9:21:1E:CC:B4:1F:4B:75:BD:35:8B:F0:2A:1C:F8:B3:D4:0A:BF:57:98:35
- 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.
Never get surprised by esg-passau.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch esg-passau.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.
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