SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
e-testy.sk
SSL/TLS Certificate
SSL/TLS Certificate for e-testy.sk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- e-testy.sk
- Valid from
- Sep 22, 2026
- Valid until
- Dec 21, 2026 (63 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0684DD1505994C2D4BB26171722ECB1F432F
- SHA-256 fingerprint
- 3E:AA:0E:07:E8:14:46:E4:C7:8E:F6:20:53:4D:F7:4F:01:14:F8:74:56:4D:F0:01:1D:FD:9A:4A:14:93:BF:56
- 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 e-testy.sk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch e-testy.sk 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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