SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dagan-optics.com
SSL/TLS Certificate
SSL/TLS Certificate for dagan-optics.com
Valid- Issued by (CA)
- Google Trust Services
- Subject
- dagan-optics.com
- Valid from
- Aug 9, 2026
- Valid until
- Nov 7, 2026 (63 days remaining)
- Public key
- EC 256-bit
- Serial
- 05A27AB623AD80B213D729BD403EBA30
- SHA-256 fingerprint
- AB:17:18:B7:3D:94:DC:27:4B:46:F6:88:B2:AE:E7:F5:C3:C3:FA:AA:ED:03:C7:3D:87:88:AE:19:5F:33:FF:DD
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 1, 2026.
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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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