Checking TLS certificate, protocols, and HSTS...
Checking TLS certificate, protocols, and HSTS...
TLS check for
Checked 5/15/2026, 12:03:52 AM · 138ms
Excellent: TLS 1.3, valid cert, HSTS preload set.
84d until expiry
Subject Alternative Names (4)
CN=calendly.com
issued by CN=E7, O=Let's Encrypt, C=US
CN=E7, O=Let's Encrypt, C=US
issued by CN=ISRG Root X1, O=Internet Security Research Group, C=US
CN=ISRG Root X1, O=Internet Security Research Group, C=US
issued by CN=ISRG Root X1, O=Internet Security Research Group, C=US
Negotiated: TLSv1.3 · TLS_AES_256_GCM_SHA384 (TLSv1.3)
TLSv1
Not supported
not supportedTLSv1.1
Not supported
not supportedTLSv1.2
Supported
TLSv1.3
Supported
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