SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
optik-weis.com
SSL/TLS Certificate
SSL/TLS Certificate for optik-weis.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- optik-weis.com
- Valid from
- Aug 30, 2026
- Valid until
- Nov 28, 2026 (79 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 06E6CD13E36ACBE30C70E2DE1BD8F05BAABD
- SHA-256 fingerprint
- D1:09:97:94:13:D2:09:A3:D9:56:43:98:AD:18:39:BA:57:22:47:2A:F7:EB:4E:1A:32:67:DF:C6:44:A7:7E:D1
- 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.
This certificate has been served since Jul 26, 2026.
Never get surprised by optik-weis.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch optik-weis.com 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.