SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sanleon.ca
SSL/TLS Certificate
SSL/TLS Certificate for sanleon.ca
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sanleon.ca
- Valid from
- Aug 5, 2026
- Valid until
- Nov 3, 2026 (61 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 065AF615B4818098FDF23196E99260367EC8
- SHA-256 fingerprint
- 29:DC:9F:0F:9D:16:58:2A:CB:EA:0B:F4:75:50:8F:D4:A7:65:34:7D:94:C0:6A:4C:01:B3:33:32:D2:5A:2B:38
- 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 Sep 2, 2026.
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This is today's certificate. Turn on monitoring and we'll watch sanleon.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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