caltech.edu favicon

caltech.edu

Category: Education

Scanned: Jun 23, 2026, 05:30 AM UTC · First seen: Jun 23, 2026 · Threat Engines: 0 / 91 · Times Scanned: 1
93 / 100 Trust Score Based on scan findings at the time of analysis
No Threats Found
0 - High Risk50 - Moderate100 - No Threats
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Screenshot of caltech.edu Captured Jun 23, 2026
https://caltech.edu
Screenshot of caltech.edu
40 years
Very Popular - #3,255 Tranco rank (>10M monthly visitors)
Not listed (91 checked)
✓ Valid (TLS)
AWS EC2 (us-west-2)
Portland, United States
Unknown
Unknown
52.26.125.194
Domain & WHOIS Information
Registrar Unknown
Registered January 6, 1986
Expires July 31, 2027
Name Servers NS0239.SECONDARY.CLOUDFLARE.COM
DNSSEC Unknown
Hosting AWS EC2 (us-west-2)
Reputation & Threat Check 91 security engines checked
File Scan Summary Powered by Quttera Engine
55 files scanned
No threats
54
Low Risk
0
Medium Risk
1
High Risk
0
No threats Low Risk Medium Risk High Risk
www.caltech.edu/caltech-weekly 191.4 KB Flagged: medium risk
www.caltech.edu.http-redirect 82 B No threats
www.googletagmanager.com/gtm.js?id= 1.5 KB No threats
www.googletagmanager.com/ns.html?id=GTM-P8H9J4S 266 B No threats
www.caltech.edu/did-you-know 211.0 KB No threats
www.caltech.edu/quick-links-faculty 231.8 KB No threats
www.caltech.edu/quick-links-alumni 212.0 KB No threats
www.caltech.edu/privacy-notice 205.3 KB No threats
www.caltech.edu/quick-links-students 239.8 KB No threats
www.caltech.edu/contact 191.4 KB No threats
www.caltech.edu/admissions-aid 223.8 KB No threats
Show 44 more...
Quttera flagged medium risk files - is this your website?
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External Links & Domains
964
External Links
1 Flagged
5
Iframes
Clean
284
Referenced Domains
1 Flagged
2
Flagged Resources
Detected
us5.campaign-archive.comFlagged: Generic Suspicious Object
https://us5.campaign-archive.com/home/?u%3Deaa490ec46ef24d22d04308c6&amp%3Bid%3D36a33f2adaFlagged: Generic Suspicious Object
https://us5.campaign-archive.com/home/?u%3Deaa490ec46ef24d22d04308c6&amp%3Bid%3D36a33f2adaFlagged: Generic Suspicious Object
http://access.caltech.edu/Not flagged
http://admissions.caltech.eduNot flagged
http://alumni.caltech.eduNot flagged
http://alumni.caltech.edu/Not flagged
http://archives.caltech.eduNot flagged
http://archives.caltech.edu/Not flagged
http://asic.caltech.eduNot flagged
http://associates.caltech.edu/Not flagged
http://bbe.caltech.eduNot flagged
http://beckmaninstitute.caltech.edu/Not flagged
http://bookstore.caltech.edu/Not flagged
http://bot.caltech.edu/Not flagged
http://burkeinstitute.caltech.edu/Not flagged
http://bursar.caltech.eduNot flagged
Show 485 more...
Showing first 500 of 964 entries.
us5.campaign-archive.comFlagged: Generic Suspicious Object
09.46.53.2Not flagged
aas.orgNot flagged
access.caltech.eduNot flagged
admissions.caltech.eduNot flagged
aimath.orgNot flagged
alumni.caltech.eduNot flagged
apply.clubs.caltech.eduNot flagged
archives.caltech.eduNot flagged
asic.caltech.eduNot flagged
associates.caltech.eduNot flagged
authors.library.caltech.eduNot flagged
bbe.caltech.eduNot flagged
beckmaninstitute.caltech.eduNot flagged
bigt.caltech.eduNot flagged
Show 269 more...
<iframe src%3D"https://eww.everbridge.net/web-widget/?o%3DGEEEEWWfA&s%3Dessssttwk" title%3D"Everbridge Web Widget" width%3D"60%" height%3D"600px" scrolling%3D"auto">Not flagged
<iframe src%3D"https://www.googletagmanager.com/ns.html?id%3DGTM-P8H9J4S" height%3D"0" width%3D"0" style%3D"display:none%3Bvisibility:hidden">Not flagged
<iframe width%3D"200" height%3D"113" src%3D"https://www.youtube.com/embed/c2mgpMy-_mU?feature%3Doembed" frameborder%3D"0" allow%3D"accelerometer%3B autoplay%3B clipboard-write%3B encrypted-media%3B gyroscope%3B picture-in-picture" allowfullscreen title%3D"Space Solar Power Demonstrator">Not flagged
<iframe width%3D"200" height%3D"113" src%3D"https://www.youtube.com/embed/w5SBF48WqV4?feature%3Doembed" frameborder%3D"0" allow%3D"accelerometer%3B autoplay%3B clipboard-write%3B encrypted-media%3B gyroscope%3B picture-in-picture" allowfullscreen title%3D"How Does Wireless Power Transfer Work?">Not flagged
<iframe width%3D"450" height%3D"253" src%3D"https://www.youtube.com/embed/h_OTCQ_fxuc?feature%3Doembed" frameborder%3D"0" allow%3D"accelerometer%3B autoplay%3B encrypted-media%3B gyroscope%3B picture-in-picture" allowfullscreen>Not flagged
caltech.edu Overview

Description of caltech.edu

caltech.edu appears to be the official website of the California Institute of Technology, a well-known private research university in the United States. The homepage and domain structure indicate that it provides information about academic programs, research, admissions, campus life, events, institutional leadership, and affiliated departments and institutes.

Based on the domain, page content, and classification data, the site appears to serve students, faculty, researchers, alumni, donors, and the general public. The .edu domain and long registration history are consistent with an established educational institution, and the visible content focuses on university news, scientific research, and campus resources rather than commercial activity.

Safety Assessment for caltech.edu

Multiple web-classification sources categorize this domain as education-related, and 0 out of 91 security engines flagged it at the time of this scan. In addition, major threat-database and blacklist checks provided in the scan results did not indicate phishing or malware listings. The domain is also longstanding, with a registration history dating back several decades, which is generally consistent with an established institutional website.

One automated malware scan did mark a single page and one referenced external domain as suspicious, tied to a generic heuristic label involving a campaign-archive link. Because this appears to be an isolated, low-confidence heuristic finding without corroboration from other security engines or blacklist databases, it may reflect a false positive or a caution related to embedded third-party content rather than confirmed harmful activity.

Based on available data, no significant threats were detected at the time of this scan.

Technical Description

The site presented a valid SSL/TLS certificate issued by InCommon, LLC, with validity extending to late 2026. It appears to be hosted on AWS EC2 infrastructure in the us-west-2 region, and its nameservers point to secondary Cloudflare DNS services. DNSSEC status was not available in the provided scan data.

From a technical risk perspective, the main noted concern is the single generic heuristic flag on an external campaign-archive reference. No broader signs of malware distribution, phishing, or blacklist-based blocking were indicated in the scan results at the time of analysis.

HTTP Redirect Chain
No redirects detected - direct connection to destination
Website Insights
#3,255
Tranco Rank
Very Popular
Visitors >10M/mo
Category: Education
Rank History (30 days)
May 18 Jun 22
No cookies data available
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This report was generated automatically and is provided for informational purposes only. Results are based on a point-in-time scan and may contain false positives or incomplete data. This does not constitute a security audit or certification. No vendor in the market can guarantee a 100% detection rate. If you believe this report is inaccurate, please submit a dispute.

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