Check-Host.cc

Domain

substrate.office.com

Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.

Run a live full scan of substrate.office.com

On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.

Deep-scan now
Hosting IPs
A/AAAA targets
Subdomains
CT + scan + body
Record Types
seen in DNS
Observed Certs
in our scans

DNS Records

A
132.245.230.33, 40.100.4.165, 40.101.121.34, 40.101.22.200, 40.101.27.136, 40.101.27.201, 40.101.27.78, 40.101.69.18
AAAA
MX
NS
TXT
CNAME
CAA

WHOIS / Registration

Registration data planned

Registrar, creation/expiry dates and domain status via RDAP. Rolling out gradually — bulk WHOIS is rate-limited, so we resolve on a prioritized cadence.

Subdomains

Subdomain enumeration pending

Every subdomain ever issued a TLS cert under this apex — extracted from Certificate Transparency logs, our own scan observations and body references.

Tech Stack

Tech detection pending

Wappalyzer-rules detect CMS, frameworks, analytics, JS libs and server-side languages on this domain.

TLS Certificates

Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com
Subject: outlook.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments-sdf.office.net, attachments.office.net, ccs.login.microsoftonline.com, hotmail.com, mail.services.live.com, office365.com, outlook.com, outlook.office.com, substrate-sdf.office.com, substrate.office.com

IPs Citing This Domain

No citing IPs found yet

As the world-sweep progresses, hosts referencing this domain in their HTML will surface here.

Origin / IP-Leak

USP

When a hostname is served behind a CDN (e.g. Cloudflare), the origin server can sometimes be identified by matching its TLS cert against the protected hostname. Findings shown here are heuristic candidates, not guarantees.

No origin-IP leaks detected (yet)

Either this domain doesn't sit behind a CDN, or we haven't seen a TLS cert from a non-CDN IP matching this hostname. Run a fullscan to refresh the cert→IP cross-reference.

Threat Intelligence

Domain threat-intel pending

Matches in URLhaus, OpenPhish, PhishTank, malware feeds, and Spamhaus DBL.

History

Domain timeline pending

Passive-DNS history accumulates as our forward-DNS crawler observes A/AAAA/MX/NS/TXT records over time.