SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sensor-technik.co.uk
SSL/TLS Certificate
SSL/TLS Certificate for sensor-technik.co.uk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sensor-technik.co.uk
- Valid from
- Sep 6, 2026
- Valid until
- Dec 5, 2026 (80 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0610528ED5AEFD61B58B0687582D433B5870
- SHA-256 fingerprint
- 80:13:07:1C:CC:4A:B8:22:D5:91:AB:CB:42:62:78:49:22:87:77:FB:AC:47:6A:18:D4:93:0F:B0:37:96:E6:FA
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by sensor-technik.co.uk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sensor-technik.co.uk 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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