checkappexec.microsoft.com
Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.
Run a live full scan of checkappexec.microsoft.com
On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.
DNS Records
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
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
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 |
|---|---|---|---|
| A | 172.211.159.152 | 2026-05-25 22:02:50.525 | 2026-07-23 03:57:18.268 |
| A | 108.141.37.120 | 2026-05-25 22:05:29.416 | 2026-07-26 23:44:58.719 |
| A | 48.209.164.47 | 2026-05-25 22:13:29.500 | 2026-05-27 08:23:01.825 |
| A | 48.209.162.134 | 2026-05-26 04:02:49.330 | 2026-06-22 16:06:16.451 |
| A | 98.64.238.3 | 2026-05-26 05:13:56.978 | 2026-07-25 15:14:04.371 |
| A | 108.141.15.7 | 2026-05-26 05:22:44.503 | 2026-06-19 13:51:59.137 |
| A | 48.209.180.244 | 2026-05-26 05:26:40.228 | 2026-06-23 17:35:56.729 |
| A | 20.82.9.214 | 2026-05-26 06:14:31.784 | 2026-06-19 01:45:08.038 |
| A | 20.191.45.158 | 2026-05-26 16:22:23.746 | 2026-07-18 10:40:31.963 |
| A | 172.205.25.163 | 2026-05-26 16:26:29.491 | 2026-07-18 18:54:45.097 |
| A | 4.175.223.124 | 2026-05-26 18:05:04.141 | 2026-07-28 03:06:50.623 |
| A | 172.205.80.42 | 2026-05-26 19:25:14.178 | 2026-07-22 06:16:07.817 |
| A | 4.209.164.61 | 2026-05-26 20:32:34.302 | 2026-05-27 08:36:38.549 |
| A | 4.231.66.184 | 2026-05-27 09:24:40.778 | 2026-06-19 18:05:33.048 |
| A | 20.93.72.182 | 2026-05-27 13:47:17.296 | 2026-07-28 09:07:06.723 |
| A | 51.137.3.145 | 2026-06-14 23:37:38.836 | 2026-07-27 03:49:39.738 |
| A | 4.231.68.226 | 2026-06-15 08:07:07.313 | 2026-06-15 08:07:07.313 |
| A | 20.56.187.20 | 2026-06-18 14:29:41.168 | 2026-07-26 23:37:43.599 |
| A | 48.209.144.71 | 2026-06-23 18:03:24.681 | 2026-06-23 18:03:24.681 |