SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
certifi-k.com
SSL/TLS Certificate
SSL/TLS Certificate for certifi-k.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- certifi-k.ch
- Valid from
- Oct 2, 2026
- Valid until
- Dec 31, 2026 (85 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 052C220B71EA4536964DE5612C5BBA274F3D
- SHA-256 fingerprint
- 97:0A:21:E0:44:31:BB:6A:DD:69:FC:0F:3F:44:29:95:A5:42:BC:44:D0:2B:50:43:AF:81:34:47:BE:21:05:E7
- 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 Oct 5, 2026.
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This is today's certificate. Turn on monitoring and we'll watch certifi-k.com 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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