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cortana.office.com

Every SSL/TLS certificate ever issued for this name, indexed from public CT logs.

csv export pro
total records
14
active · on this page
6
expired · on this page
8
unique issuers · on this page
9
issuers on this pageMicrosoft5OCLC2cPanel1SSL1Let's Encrypt1Unknown Issuer1e-commerce monitorin…1D-Trust GmbH1
domainstatus
msit.cortana.office.comcrt.sh
Microsoft
expires in 3mo
cortana.office.comcrt.sh
Microsoft
expires in 3mo
cortana.office.comcrt.sh
cPanel
expired 1y ago
cortana.office.comcrt.sh
SSL
expired 1y ago
msit.cortana.office.comcrt.sh
Let's Encrypt
expired 1y ago
cortana.office.comcrt.sh
OCLC
expired 1y ago
msit.cortana.office.comcrt.sh
OCLC
expired 1y ago
msit.cortana.office.comcrt.sh
Unknown Issuer
expired 2y ago
msit.cortana.office.comcrt.sh
e-commerce monitorin…
expired 2y ago
msit.cortana.office.comcrt.sh
Microsoft
expired 1y ago
msit.cortana.office.comcrt.sh
Microsoft
expires in 4mo
cortana.office.comcrt.sh
Microsoft
expires in 4mo
msit.cortana.office.comcrt.sh
D-Trust GmbH
expires in 2mo
msit.cortana.office.comcrt.sh
GlobalSign
expires in 9d
Pipe results into your recon pipeline
# Python
$ pip install ct-radar
$ ct-radar cortana.office.com | httpx -silent
# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar cortana.office.com | nuclei
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About certificate history for cortana.office.com

This page lists every X.509 (SSL/TLS) certificate ever issued for cortana.office.com and its subdomains, as recorded in public Certificate Transparency (CT) logs. CT logs are an immutable, append-only record of every certificate issued by participating Certificate Authorities (CAs), as required by the major browsers since 2018.

Subdomain enumeration via CT logs is one of the highest-signal techniques in reconnaissance — every time a TLS certificate is issued, all Subject Alternative Names (SANs) on that certificate become public. Internal and forgotten subdomains regularly show up here days after they're set up.

To monitor cortana.office.com for newly-issued certificates in real-time (useful for detecting unauthorized issuance, phishing variants, or shadow IT) add it to your watchlist (Pro plan).