SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
open-mind.ca
SSL/TLS Certificate
SSL/TLS Certificate for open-mind.ca
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- open-mind.ca
- Valid from
- Jul 17, 2026
- Valid until
- Oct 15, 2026 (71 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0578C97B0008810D64507CE4B61C5F529CCC
- SHA-256 fingerprint
- C9:04:99:14:11:58:AF:D1:9F:22:19:83:FF:DF:6D:A8:01:50:51:B8:D1:2B:AA:58:7E:B6:D3:98:45:B5:A8:10
- 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.
Never get surprised by open-mind.ca's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch open-mind.ca 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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