SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
mta-sa.de
SSL/TLS Certificate
SSL/TLS Certificate for mta-sa.de
Self-signed- Issued by (CA)
- Plesk
- Subject
- Plesk
- Valid from
- Apr 13, 2023
- Valid until
- Apr 12, 2024 (expired 873 days ago)
- Public key
- RSA 2048-bit
- Serial
- 64388E00
- SHA-256 fingerprint
- 83:E5:95:95:9D:86:D1:A7:60:F1:52:96:DB:DA:52:F8:EA:D4:59:58:D7:9C:10:E9:B7:CD:7B:D8:45:17:87:05
- Chain
- Plesk
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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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