SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
it-admin.sk
SSL/TLS Certificate
SSL/TLS Certificate for it-admin.sk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- it-admin.sk
- Valid from
- Jul 11, 2026
- Valid until
- Oct 9, 2026 (66 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05EAAA3A798025F822EE3F4EA662DD049C99
- SHA-256 fingerprint
- 18:92:BB:68:0F:69:61:B0:1D:CF:EE:B2:B8:01:FA:8D:4A:22:16:4B:49:4A:94:C0:A8:A0:13:67:D9:10:F9:17
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by it-admin.sk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch it-admin.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, 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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