SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
freemeasurementtools.com
SSL/TLS Certificate
SSL/TLS Certificate for freemeasurementtools.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- freemeasurementtools.com
- Valid from
- Sep 22, 2026
- Valid until
- Dec 21, 2026 (79 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06D8EBC9E4114D3E8707B6261515190A7CD8
- SHA-256 fingerprint
- CE:E3:8E:B7:7C:5F:75:AF:B8:1A:A2:0C:4A:41:E8:40:86:EE:36:B0:4F:1C:EE:60:C6:BF:6E:0C:96:86:CF:8E
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 23, 2026.
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Uptime
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DNS changes
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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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