SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
stb-ermers.de
SSL/TLS Certificate
SSL/TLS Certificate for stb-ermers.de
Self-signed- Issued by (CA)
- stb-ermers.de.df-282492.dummy
- Subject
- stb-ermers.de.df-282492.dummy
- Valid from
- Oct 25, 2025
- Valid until
- Oct 25, 2026 (85 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0147A1B1A6
- SHA-256 fingerprint
- 87:C4:BB:0A:47:80:67:7D:A8:AC:6A:1D:9F:C2:CC:B0:E4:4E:46:B4:11:4F:B3:D5:E5:2F:B2:AA:8F:96:D6:0F
- Chain
- stb-ermers.de.df-282492.dummy
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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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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