Host

18.9.63.91

Tags: Self-signed certificate End-of-life software

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 14 HIGH 22 MEDIUM 60 LOW 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

Network
Massachusetts Institute of Technology AS3
Open ports
80, 443 · at our latest check, 2026-06-17
Location
United States US
Hostname
acctreg-prod-app-1.mit.edu · reverse DNS, checked 2026-10-04
Route
18.9.0.0/16 · announced by Massachusetts Institute of Technology AS3 no RPKI authorisation
Organisation
Massachusetts Institute of Technology · Educational/Research
Registry network
MIT · 18.0.0.0 - 18.31.255.255 · Massachusetts Institute of Technology · ARIN
Abuse contact
[email protected] · for MIT
First seen
2026-06-17 09:16 UTC
Last seen alive
2026-06-17 09:17 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 Apache/2.2.3 102 CVEs first 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/tcp TLS first 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.

CVEs by severity: HIGH 3 MEDIUM 1

CVESoftware
CVE-2010-0425 HIGH 10.0 http_server 2.2.3 · port 80
CVE-2007-6423 HIGH 7.8 http_server 2.2.3 · port 80
CVE-2024-40898 HIGH 7.5 http_server 2.2.3 · port 80
CVE-2022-28330 MEDIUM 5.3 http_server 2.2.3 · port 80

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.