Tumblr is a microblogging and social platform that lets users post text, photos, quotes, links, music, and videos from a browser, phone, desktop, or email. It serves casual bloggers, creatives, and communities who want a lightweight, flexible publishing experience. The platform has been operating for over 20 years and is one of the most widely recognized names in microblogging.
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Authority
100/100
Safety
90/100
Registered
Jun 8, 2006
20 years old · MarkMonitor Inc.
On record
since 2013
All 5 safety checks passed (Sep 4, 2026).
Current facts
What AboutUs observed on the live site and in WHOIS/DNS today. These are measurements, not an endorsement of the site.
checked now
Tumblr — company name on record since 2013; still matches the live site.
checked now
Domain registered Jun 8, 2006 — 20 years old.
checked now
Registrar today: MarkMonitor Inc. — unchanged since AboutUs began tracking (Jul 23, 2026).
Authority 100/100— in the top 1% of scored sitesClear
Why this authority score
Prominence (Tranco rank #152; Open PageRank 5.1/10)+19
Verified continuity: 20.1 years (RDAP registration)+10
Security & email hygiene+4
Prominence × continuity interaction+1
Calibration adjustment (published map)+28
Every point maps to a sentence. These lines sum to the model score of 62/99, which is what places this site at 100/100 against every other scored site.
Safety evidence
All checked sources came back clean
Site history
Dated record — historical facts always carry their date.
2006
Domain registered (Jun 8, 2006).
2013
First tracked by AboutUs (Nov 6, 2013); profile edited 6 times through 2015.