Check-Host.cc

Domain

extmgmt.visualstudio.com

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

Run a live full scan of extmgmt.visualstudio.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
4
A/AAAA targets
Subdomains
CT + scan + body
Record Types
2
seen in DNS
Observed Certs
35
in our scans

DNS Records

A
150.171.73.16, 150.171.74.16
AAAA
2603:1061:10:1::16, 2603:1061:10::16
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.

dd67d07eba2ebd38… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-04-08 10:28:09 → 2026-08-25 23:59:59
03480c0dbe69fc21… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-04-01 07:58:13 → 2026-08-25 23:59:59
8c978000e44fe35b… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-26 09:24:40 → 2026-08-25 23:59:59
2a4d524d541b99e0… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-04 07:46:00 → 2026-08-25 23:59:59
26d80c8222cd0879… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-03 14:20:12 → 2026-08-25 23:59:59
2241cef3a10ce5f0… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-03 13:06:22 → 2026-08-25 23:59:59
1eef79ce8613c5e7… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-03 06:33:52 → 2026-08-25 23:59:59
b1f95a071411b9b5… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-03 06:18:46 → 2026-08-25 23:59:59
d3f748a0736e0d68… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-03 01:02:44 → 2026-08-25 23:59:59
854d2fb1872f673c… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-03 00:19:52 → 2026-08-25 23:59:59
53e4e7aca93f44ae… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-02 21:53:19 → 2026-08-25 23:59:59
b96438a2362b8ddf… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-02 16:13:57 → 2026-08-25 23:59:59
d84ca6dba5cfdd24… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-03-01 18:38:37 → 2026-08-25 23:59:59
52b3f14841ea16f9… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-02-21 17:30:45 → 2026-08-20 17:30:45
0ceb926688bceb04… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com
Valid: 2026-02-03 11:49:11 → 2026-08-02 11:49:11
2f50b6449677ee6b… google · xenon2026h2
Subject: extmgmt.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: extmgmt.visualstudio.com, *.extmgmt.visualstudio.com, extmgmt.dev.azure.com, extmgmtpfcca1dr.extmgmt.visualstudio.com
Valid: 2026-01-27 20:30:54 → 2026-07-26 20:30:54

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 2603:1061:10:1::16 2026-06-20 01:03:17.828 2026-07-28 21:06:34.628
A 150.171.74.16 2026-06-20 01:03:17.828 2026-07-28 21:06:34.628
AAAA 2603:1061:10::16 2026-06-20 01:03:17.828 2026-07-28 21:06:34.628
A 150.171.73.16 2026-06-20 01:03:17.828 2026-07-28 21:06:34.628