SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hdt-elektro.ch
SSL/TLS Certificate
SSL/TLS Certificate for hdt-elektro.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- hdt-elektro.ch
- Valid from
- Oct 5, 2026
- Valid until
- Jan 3, 2027 (55 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05A8724520FA8EE2402D23DA52294EFF2F67
- SHA-256 fingerprint
- 7F:76:33:20:E1:CD:D1:0C:DA:78:38:8B:11:4D:F8:90:DA:17:4B:F5:0D:A3:39:F3:73:C8:B4:3A:16:0A:87:5D
- 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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Uptime
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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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