Is tumblr.com legit?
Tumblr appears to be a trusted platform with strong technical foundations. While it has some minor gaps in transparency, its overall security and infrastructure are robust, making it a reliable service.
Social Media average: 80/100 · based on 38 sites
Checked: April 21, 2026 at 3:45 PM UTC
Is tumblr.com a scam? Here's what we found.
Security is strong, with modern TLS 1.3, an up-to-date SSL certificate, HSTS, and a Content Security Policy, indicating a vigilant approach to protecting users. No threats were detected by Google Web Risk.
The domain has excellent longevity at 19 years old and is registered with a professional registrar, MarkMonitor, reinforcing its established and legitimate identity.
With a high Tranco rank and a clean DNS blacklist record, Tumblr maintains a strong online reputation. The lack of a Trustpilot profile is not a significant concern for a platform of this nature.
Transparency could be improved as essential contact information and social media links are missing from the homepage, which can be an inconvenience for users seeking assistance or wanting to connect.
The site provides clear legal pages including a Privacy Policy and Terms of Service, demonstrating a commitment to user rights and compliance.
The infrastructure is well-managed with robust DNS resolution, comprehensive email authentication (SPF, DMARC), a clean robots.txt, and fast page load times, ensuring reliable service delivery. The small sitemap is a minor point for consideration.
Signals Detected
No structured data markup found
This is one of the most visited websites globally
This business has no Trustpilot presence — not unusual for smaller or newer companies
Domain created 2006-06-08T22:11:40Z (19 years, 1 months ago)
Registered through MarkMonitor Inc.
Expires in 413 days
DNSSEC status from WHOIS
Resolves to: 192.0.77.40
Mail servers: aspmx.l.google.com., alt2.aspmx.l.google.com., alt1.aspmx.l.google.com., aspmx3.googlemail.com., aspmx2.googlemail.com.
Domain has SPF email authentication configured
Domain has DMARC email authentication configured
DNS providers: ns2.tumblr.com., ns4.tumblr.com., ns1.tumblr.com., ns3.tumblr.com.
Valid certificate, expires in 47 days
Certificate issued by Let's Encrypt
Connection uses TLS 1.3
Not found on any DNS blacklists
Site has custom branding and social media metadata
robots.txt has 128 directives and references a sitemap
Site enforces HTTPS via HSTS
Site has Content Security Policy configured
X-Frame-Options: deny
Web server: nginx
No threats detected by Google Web Risk
Sitemap found with 3 entries
Website is live and responding
No obvious contact information found on homepage
Website has both privacy policy and terms of service pages
No social media links found on homepage
Could not query Wayback Machine
Could not query certificate transparency logs
Fast page load
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