SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
wd-tec.com
SSL/TLS Certificate
SSL/TLS Certificate for wd-tec.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- webmail.wd-tec.com
- Valid from
- Oct 27, 2026
- Valid until
- Jan 25, 2027 (79 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05FA2BBB49965F30B69A511CBADBA6A638A2
- SHA-256 fingerprint
- 02:CF:2D:43:4A:F7:6A:12:51:45:7F:3B:43:DB:79:68:6D:95:1F:1C:8E:54:CA:4A:E4:68:BE:AF:4E:1C:A0:89
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (globalsign.com, letsencrypt.org, pki.goog, sectigo.com).
We've observed 1 previous certificate for this host. This certificate has been served since Sep 28, 2026.
Never get surprised by wd-tec.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch wd-tec.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, CNAME, TXT 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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