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 hr-shield.com

Valid
Issued by (CA)
Let's Encrypt
Subject
hr-shield.com
Valid from
Aug 7, 2026
Valid until
Nov 5, 2026 (86 days remaining)
Public key
RSA 2048-bit
Serial
0542EA81818EBCA0A3659C19C579A4CA98FD
SHA-256 fingerprint
4D:66:11:3C:62:3B:53:EC:24:91:1C:ED:46:6E:31:4D:27:17:51:49:6C:FB:75:20:4E:5E:F4:B6:12:53:D1:22
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
hr-shield.com, www.hr-shield.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

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.

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