SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for opus.live

Valid
Issued by (CA)
Let's Encrypt
Subject
opus.live
Valid from
Sep 22, 2026
Valid until
Dec 21, 2026 (87 days remaining)
Public key
RSA 2048-bit
Serial
051F5304D420D8FC37C7FFD444AA7D6EB81E
SHA-256 fingerprint
92:FD:73:B8:CF:58:0C:59:58:09:C5:3A:5B:93:6B:4C:EB:E0:60:59:37:3A:95:C2:D3:95:30:B4:40:B0:CF:63
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (1)
opus.live

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

We've observed 1 previous certificate for this host. This certificate has been served since Sep 24, 2026.

Never get surprised by opus.live's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch opus.live 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.