Check-Host.cc

Domain

substrate.svc.cloud.microsoft

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

Run a live full scan of substrate.svc.cloud.microsoft

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
8
A/AAAA targets
Subdomains
CT + scan + body
Record Types
2
seen in DNS
Observed Certs
4
in our scans

DNS Records

A
40.99.204.210, 40.99.204.98, 40.99.205.2, 52.97.201.98
AAAA
2603:1026:204:2::2, 2603:1026:c03:7064::2, 2603:1026:c03:7065::2, 2603:1026:c03:7078::2
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

Certificate observations pending

TLS certs naming this domain in subject or SANs will appear here as our scan-layer catches them.

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.

CT-Log Evidence

Certificates from public Certificate Transparency logs whose subject or SAN names this domain — including historic certs we never observed live.

d0958a58fb961c65… google · xenon2026h2
Subject: outlook.cloud.microsoft
Issuer: Microsoft TLS G2 RSA CA OCSP 04
SANs: outlook.cloud.microsoft, *.outlook.cloud.microsoft, substrate.svc.cloud.microsoft, *.outlook.usercontent.microsoft
Valid: 2026-03-10 23:35:31 → 2026-09-06 23:35:31
1e472e5c4065d9e9… google · xenon2026h2
Subject: outlook.cloud.microsoft
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: outlook.cloud.microsoft, *.outlook.cloud.microsoft, substrate.svc.cloud.microsoft, *.outlook.usercontent.microsoft
Valid: 2026-02-25 07:42:04 → 2026-08-25 23:59:59

Threat Intelligence

Domain threat-intel pending

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

History

Passive DNS — every value this name ever resolved to and when we first / last observed it. Updates every cycle of our forward-DNS crawler.

Type Value First seen Last seen
AAAA 2603:1026:c03:7065::2 2026-06-22 05:46:57.553 2026-06-22 05:46:57.553
AAAA 2603:1026:c03:7064::2 2026-06-22 05:46:57.553 2026-06-22 05:46:57.553
A 40.99.204.210 2026-06-22 05:46:57.553 2026-06-22 05:46:57.553
A 40.99.205.2 2026-06-22 05:46:57.553 2026-06-22 05:46:57.553
A 40.99.204.98 2026-06-22 05:46:57.553 2026-06-22 05:46:57.553
AAAA 2603:1026:c03:7078::2 2026-06-22 05:46:57.553 2026-06-22 05:46:57.553
A 52.97.201.98 2026-06-22 05:46:57.553 2026-06-22 05:46:57.553
AAAA 2603:1026:204:2::2 2026-06-22 05:46:57.553 2026-06-22 05:46:57.553