As of our latest check on 2026-06-17, 18.9.63.91 (Massachusetts Institute of Technology, AS3, United States) had 2 open ports (80, 443) and 102 known CVEs, 1 known to be exploited.
Known CVEs on this host
2open ports
0names pointing here
102known CVEs
1known exploited
Open ports and CVEs as of our latest check of this host, 2026-06-17.
CVEs by severity: CRITICAL 14HIGH 22MEDIUM 60LOW 6
A match is an indication, not proof: it is based on the software version a service reported, and fixes are often backported without changing the version. See the list
Not counted: 4 only affect a particular platform; this host's is not known (http_server 2.2.3). See them
Not a Tor relay, not a VPN or privacy relay address, and not on a current public blocklist.
Services (2)
80/tcpHTTPApache/2.2.3102 CVEsfirst 2026-06-17 · last 2026-06-17
Status
200 OK
Server
Apache/2.2.3
Raw response
HTTP/1.1 200 OK
Date: Wed, 17 Jun 2026 09:16:54 GMT
Server: Apache/2.2.3
Last-Modified: Mon, 03 Feb 2014 21:14:30 GMT
ETag: "117c8b-c-4f18702669980"
Accept-Ranges: bytes
Content-Length: 12
Connection: close
Content-Type: text/html; charset=UTF-8
placeholder
443/tcpTLSfirst 2026-06-17 · last 2026-06-17
TLS
TLSv1.0
Certificate for
acctreg-prod-app-1.mit.edu
Issued by
acctreg-prod-app-1.mit.edu
Valid
2022-01-20 → 2031-11-29
Note
self-signed certificate
Raw response
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>400 Bad Request</title>
</head><body>
<h1>Bad Request</h1>
<p>Your browser sent a request that this server could not understand.<br />
Reason: You're speaking plain HTTP to an SSL-enabled server port.<br />
Instead use the HTTPS scheme to access this URL, please.<br />
<blockquote>Hint: <a href="https://accounts.mit.edu/"><b>https://accounts.mit.edu/</b></a></blockquote></p>
</body></html>
Vulnerabilities
Only affects certain platforms (4)
These CVEs only apply when the software runs on a particular platform (for example Windows), and this host's platform is not known. They are not counted.
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.