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 pen-print.com

Valid
Issued by (CA)
Sectigo Limited
Subject
pen-print.com
Valid from
Oct 13, 2025
Valid until
Nov 13, 2026 (50 days remaining)
Public key
RSA 2048-bit
Serial
DF21F2826ED2B4155A4595369E779CDE
SHA-256 fingerprint
50:2A:6F:F6:F2:6D:93:5C:1B:53:59:CF:3B:D8:20:41:90:CC:D9:A6:2F:56:E6:C7:40:B5:EF:BB:A1:DF:78:E0
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
pen-print.com, www.pen-print.com

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

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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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