Check-Host.cc

Domain

advsec.visualstudio.com

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

Run a live full scan of advsec.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
A/AAAA targets
Subdomains
CT + scan + body
Record Types
seen in DNS
Observed Certs
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.

57f244e5c3682ead… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-04-01 02:48:48 → 2026-08-25 23:59:59
dd8970c62773edd5… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-26 21:51:07 → 2026-08-25 21:51:07
c804c857ce787b95… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-26 19:02:50 → 2026-08-25 19:02:50
c2bdcaa7f3a8b82b… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-26 18:42:57 → 2026-08-25 18:42:57
293eccbe8b7da081… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-26 18:33:56 → 2026-08-25 18:33:56
3c17edfeee5bac2f… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-26 11:59:05 → 2026-08-25 11:59:05
737db1786c494b5d… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-26 10:41:54 → 2026-08-25 10:41:54
67e52d0658949006… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-26 09:31:18 → 2026-08-25 09:31:18
a2292f9c4a6481fd… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-26 03:32:31 → 2026-08-25 03:32:31
27d4762d32eda516… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-26 01:07:33 → 2026-08-25 01:07:33
fb254e8b9c098aad… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-25 21:56:23 → 2026-08-24 21:56:23
cba35c96e3116f55… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-25 10:37:35 → 2026-08-24 10:37:35
63d7fbfa8d1895b8… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-25 09:28:28 → 2026-08-24 09:28:28
8265e8d970456e4a… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-25 00:43:31 → 2026-08-24 00:43:31
0543eb0d9b0e1576… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-24 07:19:47 → 2026-08-23 07:19:47
f63db039836fb40f… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-23 22:30:33 → 2026-08-22 22:30:33
a4c5085f9e4ffe05… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-23 21:29:16 → 2026-08-22 21:29:16
c4876dd3fcc06bc9… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-21 09:25:08 → 2026-08-20 09:25:08
ef298a569a5e98c7… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com
Valid: 2026-02-03 20:55:39 → 2026-08-02 20:55:39
a135afb990d0c894… google · xenon2026h2
Subject: advsec.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: advsec.visualstudio.com, *.advsec.visualstudio.com, advsec.dev.azure.com, advsecprodcus1.advsec.visualstudio.com
Valid: 2026-01-26 22:37:33 → 2026-07-25 22:37:33

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 2026-06-19 20:55:21.661 2026-06-23 09:17:07.306
A 150.171.74.16 2026-06-19 20:55:21.661 2026-06-23 09:17:07.306
AAAA 2603:1061:10::16 2026-06-19 20:55:21.661 2026-06-23 09:17:07.306
A 150.171.73.16 2026-06-19 20:55:21.661 2026-06-23 09:17:07.306