Automated public DNS and web checks; results may be incomplete. These are passive observations, not an assessment of the organization.
Executive summary
caltech.edu
Critical findings in the observed public configuration. Some basic protections were not detected.
Partial coverage: the score is based on 52% of applicable check weight. 8 unverified check(s) are excluded, not counted as failures.
2026-11-15 18:29 UTC
Useful for your IT provider or a colleague. Anyone with the link can view the report.
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An attacker can send email that looks like it came from the company.
Browsing to the site is not properly protected by encryption.
Nothing in this category could be verified from public data.
The domain's infrastructure works, but recommended hardening is missing.
Help someone else check their domain
Share this public report with a colleague. They can review the evidence and check their own domain.
What to do first
- 1.
Tell receiving mail servers how to treat fake email from your domain
Without this policy, inboxes have less guidance for spotting messages that impersonate you.
Who can fix it: Your email provider, together with whoever manages your DNS
How to verify after the fix
dig +short TXT _dmarc.caltech.edu
- 2.
Send visitors to the secure version of your site
Visitors who type your address without https may stay on an unprotected connection.
Who can fix it: Your web host
How to verify after the fix
curl -sI http://caltech.edu/ | grep -iE "^(HTTP|location)"
A starting point, not a security guarantee.
What this grade means
- Tested hostname
- caltech.edu
- Website request
- GET https://caltech.edu/
- Scan time
- 2026-11-15 18:29:46 UTC
- Grading method
- Version 2How grading works
- Unverified or excluded checks
- HTTPS available · Unverified
- SSL/TLS certificate validity · Unverified
- HSTS — enforce encryption in the browser · Unverified
- CSP — protection from script injection · Unverified
- Clickjacking protection · Unverified
- X-Content-Type-Options · Unverified
- Referrer-Policy · Unverified
- Permissions-Policy · Unverified
This is a snapshot of the public configuration checks listed in this report. It does not verify the site's owner, business legitimacy, application security, or absence of vulnerabilities. It is not a security certification.
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[](https://getmirror.online/report/caltech.edu)<a href="https://getmirror.online/report/caltech.edu"><img src="https://getmirror.online/badge/caltech.edu.svg" alt="Domain Armor grade"></a>https://getmirror.online/badge/caltech.edu.svgScan history
AI fix plan
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Scans to analyze
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Technical detail
Click a check to see the public data, a verification command, a safe fix recommendation and documentation sources.
Email security
14/30Encryption & certificate
0/7Browser protections
—DNS infrastructure
10/15Public DNS records
| A | caltech.edu | 52.26.125.194 |
| AAAA | caltech.edu | — |
| MX | caltech.edu | 10 mx1.caltech.iphmx.com 10 mx2.caltech.iphmx.com |
| NS | caltech.edu | ns0090.secondary.cloudflare.com ns0239.secondary.cloudflare.com |
| TXT | caltech.edu | MS=ms43712753 iContact1389932 jk01vgvoojdefne9jihhtis667 ZOOM_verify_a-Gb5-aqQgygEiKsnho63w apple-domain-verification=KD7b3wNXe76BHRAV autodesk-domain-verification=TtWEzwdFn86i9o8NX_8R 1password-site-verification=VRLN67QMNNEPXIIREL6TDZABF4 amazonses:CBaUu/J2wBFtHuO9isUzHAXTnIWcN5RyPUBvggu7SNE= amazonses:X9y0RbFXXvxu3ft83xg2e+YV++OUePTUSeCOdB3Chjg= openai-domain-verification=dv-fRmGl55vmrLnDqlIOcOoidYz anthropic-domain-verification-rw8528=rFwrZAPawzCVNGD318e9zzavQ Y84qDmmAIPozyUoBIRWmXsFltoU2Pl8b8WGKPlqgz+1t5Db4z9H5ngaaCTq3TTaOK+SCPYUsGVlGn0wUzXNdow== adobe-idp-site-verification=1e150df049a820e49156727d1b84c48a1ae11f66f87ad76d2cf30cb9d378acb6 v=spf1 ip4:131.215.0.0/16 ip4:134.4.0.0/16 ip4:192.100.16.0/24 ip4:198.129.208.0/23 ip4:208.69.128.0/22 ip4:199.188.184.0/22 ip4:198.202.125.128/25 ip4:74.122.104.0/22 ip4:72.10.184.102 ip4:72.10.184.103 ip4:72.10.182.15 ip4:72.10.182.16 include:spf.protection.outlook.com include:sendgrid.net include:mktomail.com include:spf.dynect.net include:cust-spf.cashnet.com include:amazonses.com include:_spf.createsend.com include:_spf01.mykronos.com include:_s0.caltech.edu ?all |
| TXT | _dmarc.caltech.edu | v=DMARC1; p=none; rua=mailto:6e39dba0@mxtoolbox.dmarc-report.com,mailto:caltech@us.cp-dmarc.com; ruf=mailto:6e39dba0@forensics.dmarc-report.com,mailto:caltech@us.cp-dmarc.com; fo=1 |
| CAA | caltech.edu | — |
| DS | caltech.edu | 2371 13 2 dd9bc517a0668e5513ca5e546e6d155fc07358d3093245481462c37033eb1a90 |