21/tcp
FTP
first 2026-08-27 · last 2026-08-27
- Banner
- 220 Microsoft FTP Service
Raw response
220 Microsoft FTP Service
Host
104.255.173.92
As of our latest check on 2026-08-27, 104.255.173.92 (Tier.Net Technologies LLC, AS397423, United States) had 2 open ports (21, 80) and no known CVEs.
Known CVEs on this host
2open ports
0names pointing here
0known CVEs
0known exploited
Open ports and CVEs as of our latest check of this host, 2026-08-27.
No known CVEs on this host.
- Network
- Tier.Net Technologies LLC AS397423
- Open ports
- 21, 80 · at our latest check, 2026-08-27
- Location
- United States US
- Hostname
- smtp01.cdn-vas.net · reverse DNS, checked 2026-10-04
- Route
- 104.255.173.0/24 · announced by Tier.Net Technologies LLC AS397423 RPKI valid
- Organisation
- Tier.Net Technologies LLC · Content / hosting
- Registry network
- TN-CDC-BLK3 · 104.255.173.0 - 104.255.173.255 · Tier.Net Technologies LLC · ARIN
- Abuse contact
- [email protected] · for TN-CDC-BLK3
- First seen
- 2026-08-27 23:51 UTC
- Last seen alive
- 2026-08-27 23:54 UTC
- Hosted domains
- No host name points here
Reputation
Not a Tor relay, not a VPN or privacy relay address, and not on a current public blocklist.
Services (2)
80/tcp
HTTP
Microsoft-IIS/10.0
first 2026-08-27 · last 2026-08-27
- Status
- 200 OK
- Title
- IIS Windows Server
- Server
- Microsoft-IIS/10.0
- Powered by
- ASP.NET
Raw response
HTTP/1.1 200 OK
Content-Type: text/html
Last-Modified: Mon, 15 Dec 2025 09:01:03 GMT
Accept-Ranges: bytes
ETag: "11202f57a16ddc1:0"
Server: Microsoft-IIS/10.0
X-Powered-By: ASP.NET
Date: Thu, 27 Aug 2026 23:51:28 GMT
Content-Length: 703
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>IIS Windows Server</title>
<style type="text/css">
<!--
body {
color:#000000;
background-color:#0072C6;
margin:0;
}
#container {
margin-left:auto;
margin-right:auto;
text-align:center;
}
a img {
border:none;
}
-->
</style>
</head>
<body>
<div id="container">
<a href="http://go.microsoft.com/fwlink/?linkid=66138&clcid=0x409"><img src="iisstart.png" alt="IIS" width="960" height="600" /></a>
</div>
</body>
</html>
Port history
Every port that has answered a connection on this address, and when. A port is listed as open above only when a service was identified on it. Times are UTC.