SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for k-run.ca
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- k-run.ca
- Valid from
- Sep 25, 2026
- Valid until
- Dec 24, 2026 (73 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06B8F066C64E324D6D0EB6684EBC6C660104
- SHA-256 fingerprint
- E2:E0:B3:DD:95:4B:EA:3C:87:CA:E8:97:3A:79:62:86:5B:4E:ED:13:C8:08:AE:D5:04:62:E5:C2:DC:51:DB:8F
- 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 Oct 6, 2026.
Never get surprised by k-run.ca's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch k-run.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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