SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
message-server.net
SSL/TLS Certificate
SSL/TLS Certificate for message-server.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- message-server.net
- Valid from
- Sep 18, 2026
- Valid until
- Dec 17, 2026 (62 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 066F218EE2FD85C4EA9C2BE4FFD84F1F763B
- SHA-256 fingerprint
- F7:2D:AD:53:8A:D0:FA:6C:C7:0B:56:0B:FB:E4:16:CD:A3:3D:DB:3A:07:1E:05:C8:E9:02:F2:D0:92:E5:B5:BB
- 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.
This certificate has been served since Oct 4, 2026.
Never get surprised by message-server.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch message-server.net 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.