SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
mas-edv.de
SSL/TLS Certificate
SSL/TLS Certificate for mas-edv.de
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- mas-edv.de
- Valid from
- Sep 10, 2024
- Valid until
- Dec 9, 2024 (expired 635 days ago)
- Public key
- RSA 2048-bit
- Serial
- 04C285B991A50E6CD837C493808D20122B13
- SHA-256 fingerprint
- 66:08:29:76:EB:A5:51:14:12:94:65:B7:40:83:DD:B8:2F:A9:F4:43:15:43:12:DD:3B:79:1A:2D:FB:68:0A:07
- Chain
- R11 → 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 mas-edv.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch mas-edv.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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