SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
r-comp.sk
SSL/TLS Certificate
SSL/TLS Certificate for r-comp.sk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- r-comp.sk
- Valid from
- Oct 8, 2026
- Valid until
- Jan 6, 2027 (87 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05D0AA9E164E93D876B3B04E8C8F8D029C09
- SHA-256 fingerprint
- 3D:5A:91:91:D1:04:85:22:9A:F6:92:F8:CD:2D:E5:C6:86:12:F8:60:41:2D:D2:B7:69:23:BE:18:F0:46:4D:15
- 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.
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This is today's certificate. Turn on monitoring and we'll watch r-comp.sk continuously, notifying you the moment anything moves across all three signals:
Uptime
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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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