SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
opus-universum.com
SSL/TLS Certificate
SSL/TLS Certificate for opus-universum.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- opus-universum.com
- Valid from
- Sep 3, 2026
- Valid until
- Dec 2, 2026 (65 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05AE315F6E4E4D38F795C725EB66822350E4
- SHA-256 fingerprint
- 6B:E4:D4:E1:74:52:9E:0B:27:01:F7:28:A4:05:82:C2:B7:BC:47:46:4A:47:85:C6:6A:46:69:DA:26:7A:55:30
- 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 opus-universum.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch opus-universum.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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