SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ucmasajax.ca
SSL/TLS Certificate
SSL/TLS Certificate for ucmasajax.ca
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ucmasajax.ca
- Valid from
- Aug 22, 2026
- Valid until
- Nov 20, 2026 (45 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 06ED22D9EA7CF90569656FA2B12AA9690850
- SHA-256 fingerprint
- A4:93:A8:7D:34:35:CA:A1:0B:4F:41:03:6C:95:1A:10:CD:02:B1:80:FB:2D:E2:0D:B7:E4:EC:D4:D2:91:A6:A7
- Chain
- YR2 → 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 11, 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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