SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
plesk-server.com
SSL/TLS Certificate
SSL/TLS Certificate for plesk-server.com
Self-signed- Issued by (CA)
- sentinel.lon-1.plesk-server.com
- Subject
- sentinel.lon-1.plesk-server.com
- Valid from
- Jul 14, 2025
- Valid until
- Jul 14, 2026 (expired 10 days ago)
- Public key
- RSA 4096-bit
- Serial
- 5B531A3F035AA85791C5140DFA9B6444F849C3D6
- SHA-256 fingerprint
- 1E:4E:DB:CD:27:EE:28:5C:73:C3:47:CF:70:37:A7:18:54:50:31:42:7D:3C:DB:17:D8:1F:EA:0F:BA:80:0D:B2
- Chain
- sentinel.lon-1.plesk-server.com
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Jul 21, 2026.
Never get surprised by plesk-server.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch plesk-server.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.