SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
workos-mail.com
SSL/TLS Certificate
SSL/TLS Certificate for workos-mail.com
Valid- Issued by (CA)
- Google Trust Services
- Subject
- workos-mail.com
- Valid from
- Jul 20, 2026
- Valid until
- Oct 18, 2026 (39 days remaining)
- Public key
- EC 256-bit
- Serial
- 0B05702EF66F331B0EAEA6B1C147F86B
- SHA-256 fingerprint
- D5:69:2F:97:C6:40:00:87:88:5E:E2:8F:E7:7D:C9:43:DF:E3:46:C9:1E:13:CA:76:B4:F8:49:F9:28:B2:F6:1F
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
The serving CA (Google Trust Services) is authorized by this domain's CAA records (comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com).
Never get surprised by workos-mail.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch workos-mail.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.