SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hd-plan.ch
SSL/TLS Certificate
SSL/TLS Certificate for hd-plan.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- hd-plan.ch
- Valid from
- May 22, 2026
- Valid until
- Aug 20, 2026 (26 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05F6728C8503F46A7E0F46C111A8C6E4DDF7
- SHA-256 fingerprint
- 55:2C:56:A4:18:E8:05:27:EE:35:14:3F:17:B6:9E:32:D2:EA:AE:0C:08:CF:7B:3C:71:0E:79:39:25:BB:CF:BC
- Chain
- R13 → 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 hd-plan.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch hd-plan.ch 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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