SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
canaf-calgary.ca
SSL/TLS Certificate
SSL/TLS Certificate for canaf-calgary.ca
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- cpcalendars.canaf-calgary.ca
- Valid from
- Nov 6, 2026
- Valid until
- Feb 4, 2027 (88 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06DEBABE561DEFF604DED4B04047697349EA
- SHA-256 fingerprint
- 8A:8F:C0:E9:67:D4:F5:C5:EA:C1:AE:7B:6C:FC:10:E9:D5:70:14:2B:B3:F2:FD:2E:C8:0E:04:F3:F2:BB:CE:94
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (globalsign.com, letsencrypt.org, pki.goog, sectigo.com).
We've observed 1 previous certificate for this host. This certificate has been served since Oct 3, 2026.
Never get surprised by canaf-calgary.ca's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch canaf-calgary.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, CNAME, TXT 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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