Is mayoclinic.org legit?
This domain is Mostly Safe, supported by strong identity and infrastructure signals. However, bot protection issues hinder assessment of transparency and compliance aspects, which could be improved.
Health & Wellness average: 79/100 · based on 17 sites
Checked: April 27, 2026 at 9:49 PM UTC
Is mayoclinic.org a scam? Here's what we found.
The security posture is strong, featuring a valid SSL certificate with TLS 1.2, no threats detected by Google Web Risk, and solid email authentication to prevent spoofing.
The domain boasts a significant age of over 29 years, registered with a reputable corporate registrar, indicating a well-established and stable online entity. Registry lock adds another layer of security.
The website holds a high Tranco rank, indicating substantial global traffic and recognition. Being clean on DNS blacklists further reinforces its positive standing, despite no Trustpilot profile.
Transparency is somewhat limited as bot protection prevented verification of contact information and social media presence. Basic branding without social sharing metadata also suggests room for improvement.
The inability to inspect legal pages due to bot protection makes a thorough assessment difficult. However, the site's established nature and industry hint towards existing compliance measures.
The infrastructure is generally robust with good DNS resolution, comprehensive email authentication (SPF, DMARC), and a fast page load. However, the misconfigured sitemap and lack of structured data are minor areas for optimization.
Signals Detected
This is one of the most visited websites globally
No structured data markup found
Resolves to: 129.176.1.88
Mail servers: mail2.mayo.edu., mail4.mayo.edu., mail5.mayo.edu., mail3.mayo.edu.
Domain has SPF email authentication configured
Domain has DMARC email authentication configured
DNS providers: dns2.mayo.edu., a14-64.akam.net., a3-66.akam.net., a18-66.akam.net., a10-66.akam.net., a13-66.akam.net., dns1.mayo.edu., a1-70.akam.net.
This business has no Trustpilot presence — not unusual for smaller or newer companies
crt.sh returned status 429
Website returned HTTP 403 — likely WAF or bot protection blocking automated checks. The site is online but restricts non-browser access.
Bot protection prevented page inspection
Bot protection prevented checking legal pages
Bot protection prevented page inspection
Domain created 1997-02-08T05:00:00Z (29 years, 7 months ago)
Registered through CSC Corporate Domains, Inc.
Expires in 652 days
DNSSEC status from WHOIS
Valid certificate, expires in 297 days
Certificate issued by Sectigo Limited
Connection uses TLS 1.2
robots.txt has 38 directives and references a sitemap
Web server: AkamaiGHost
No threats detected by Google Web Risk
Site has a favicon but no social sharing metadata
Sitemap URL returns non-XML content
Not found on any DNS blacklists
Could not query Wayback Machine
Fast page load
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