Check-Host.cc

Domain

mx.microsoft

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

Run a live full scan of mx.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
6
A/AAAA targets
Subdomains
41
CT + scan + body
Record Types
3
seen in DNS
Observed Certs
in our scans

DNS Records

A
AAAA
MX
NS
ns1-81.azure-dns.com, ns2-81.azure-dns.net, ns3-81.azure-dns.org, ns4-81.azure-dns.info
TXT
v=spf1 -all
CNAME
CAA
0 contactemail "caarecordaware@microsoft.com", 0 iodef "mailto:caarecordaware@microsoft.com", 0 issue "digicert.com", 0 issue "microsoft.com"

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

Every subdomain we know about — harvested from CT-log SANs, scan-observed certs and HTML body references — paired with its current A/AAAA target.

Subdomain Resolves to Last seen
smtp.hve.mx.microsoft 2026-07-26 19:32:25.567
a-v1.mx.microsoft
1970-01-01 00:00:00.000
b-v1.mx.microsoft
1970-01-01 00:00:00.000
c-v1.mx.microsoft
1970-01-01 00:00:00.000
d-v1.mx.microsoft
1970-01-01 00:00:00.000
e-v1.mx.microsoft
1970-01-01 00:00:00.000
f-v1.mx.microsoft
1970-01-01 00:00:00.000
g-v1.mx.microsoft
1970-01-01 00:00:00.000
h-v1.mx.microsoft
1970-01-01 00:00:00.000
i-v1.mx.microsoft
1970-01-01 00:00:00.000
j-v1.mx.microsoft
1970-01-01 00:00:00.000
k-v1.mx.microsoft
1970-01-01 00:00:00.000
l-v1.mx.microsoft
1970-01-01 00:00:00.000
m-v1.mx.microsoft
1970-01-01 00:00:00.000
mx.microsoft
1970-01-01 00:00:00.000
n-v1.mx.microsoft
1970-01-01 00:00:00.000
o-v1.mx.microsoft
1970-01-01 00:00:00.000
p-v1.mx.microsoft
1970-01-01 00:00:00.000
q-v1.mx.microsoft
1970-01-01 00:00:00.000
r-v1.mx.microsoft
1970-01-01 00:00:00.000
s-v1.mx.microsoft
1970-01-01 00:00:00.000
t-v1.mx.microsoft
1970-01-01 00:00:00.000
u-v1.mx.microsoft
1970-01-01 00:00:00.000
v-v1.mx.microsoft
1970-01-01 00:00:00.000
w-v1.mx.microsoft
1970-01-01 00:00:00.000
x-v1.mx.microsoft
1970-01-01 00:00:00.000
y-v1.mx.microsoft
1970-01-01 00:00:00.000

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.

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.