Check-Host.cc

Domain

feeds.visualstudio.com

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

Run a live full scan of feeds.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.

ad537b0f74f3c925… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-04-08 08:18:55 → 2026-08-25 23:59:59
4ca02759182a14f4… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 04
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-04-05 05:55:24 → 2026-08-25 23:59:59
7b37345abfe8c8fc… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-31 18:54:52 → 2026-08-25 23:59:59
6122346c094773cb… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-06 21:41:28 → 2026-08-25 23:59:59
adddc8f91cc0caf5… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-06 19:27:06 → 2026-08-25 23:59:59
843656aebed5e153… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-06 16:56:07 → 2026-08-25 23:59:59
f7a211f91774b4e4… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-06 11:49:08 → 2026-08-25 23:59:59
237cbfbb014f11ba… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-06 00:03:07 → 2026-08-25 23:59:59
78b2cf5295cc1681… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-05 21:58:51 → 2026-08-25 23:59:59
7fb0b8c9c664685d… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-05 18:41:52 → 2026-08-25 23:59:59
99f255f84cfa727a… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-05 18:26:04 → 2026-08-25 23:59:59
248c50e08f6432e6… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-05 13:56:12 → 2026-08-25 23:59:59
2e4ec6f3fec422f1… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-05 04:56:04 → 2026-08-25 23:59:59
5c88877e55112555… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-05 03:40:00 → 2026-08-25 23:59:59
02bfea450fcf3d7c… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-04 21:59:56 → 2026-08-25 23:59:59
63f1065a9d9f2cdb… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-04 21:54:02 → 2026-08-25 23:59:59
a345da067a548c26… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 08
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-04 20:07:16 → 2026-08-25 23:59:59
d371c3c2e7d8cf58… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-03 07:58:31 → 2026-08-25 23:59:59
d1dfb5a128880d7c… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 07
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-03-03 06:23:35 → 2026-08-25 23:59:59
f1a368ea4f165527… google · xenon2026h2
Subject: feeds.visualstudio.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: feeds.visualstudio.com, *.feeds.visualstudio.com, feeds.dev.azure.com
Valid: 2026-02-20 17:57:28 → 2026-08-19 17:57:28

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 03:04:22.111 2026-07-27 13:59:46.418
A 150.171.74.16 2026-06-20 03:04:22.111 2026-07-27 13:59:46.418
AAAA 2603:1061:10::16 2026-06-20 03:04:22.111 2026-07-27 13:59:46.418
A 150.171.73.16 2026-06-20 03:04:22.111 2026-07-27 13:59:46.418