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/
Site check
/
slack.com
/
SSL / TLS
Passport
TLS
DNS
MX
SPF
DMARC
slack.com
SSL/TLS certificate for slack.com
Certificate is valid. Expires in 60 days.
A
SSL/TLS
A
Days until expiry
60
Issuer
Let's Encrypt
TLS version
TLSv1.3
Hostname match
yes
HSTS
max-age=31536000; includeSubDomains; preload
SAN
*.slack.com, slack.com
What changed since last time
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