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 value-domain.com

Valid
Issued by (CA)
GlobalSign nv-sa
Subject
*.value-domain.com
Valid from
Jun 12, 2026
Valid until
Dec 28, 2026 (110 days remaining)
Public key
RSA 2048-bit
Serial
72E964262A15E1654F63E20D
SHA-256 fingerprint
A2:0C:FD:76:D2:14:23:D5:C5:EF:3B:71:F3:4B:65:28:73:01:1E:FE:23:93:22:74:DA:3E:03:D3:3A:0E:7D:7E
Chain
GlobalSign GCC R3 DV TLS CA 2020 → GlobalSign
Subject Alternative Names (2)
*.value-domain.com, value-domain.com

Certificate Authority Authorization (CAA)

The serving CA (GlobalSign nv-sa) is authorized by this domain's CAA records (comodoca.com, digicert.com, globalsign.com, letsencrypt.org, pki.goog, ssl.com).

This certificate has been served since Aug 8, 2026.

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Uptime

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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.

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