SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
halifax-ats.org
SSL/TLS Certificate
SSL/TLS Certificate for halifax-ats.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.halifax-ats.patk.ca
- Valid from
- Aug 11, 2026
- Valid until
- Nov 9, 2026 (41 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06E32136ABCFEE978C552AB53FBFEC285E34
- SHA-256 fingerprint
- BC:0A:0A:70:C3:91:54:9B:42:0E:E6:DF:BB:BC:00:E9:EB:6D:AE:03:B8:E9:30:D4:98:70:AB:93:4C:FB:1B:75
- 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 halifax-ats.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch halifax-ats.org 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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