ubuntu.com

Ubuntu.com is a Linux based operating system

About Ubuntu Ubuntu is a free, open source operating system that starts with the breadth of Debian and adds regular releases (every six months), a clear focus on the user and usability (it should "Just Work", TM) and a commitment to security updates with 18 months of support for every release.

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Authority

96/100

Safety

90/100

Registered

May 29, 2004

22 years old · MarkMonitor Inc.

On record

since 2006

All 4 safety checks passed (Sep 17, 2026).

Current facts

Latest available measurements; dated entries retain their dates. These are measurements, not an endorsement of the site.

Authority & Safety, with the evidence

How this is scored →

Authority 96/100 — ahead of 96% of the August 2026 scored sampleClear

Why this authority score

Prominence (Tranco rank #235)+14
Verified continuity: 22.3 years (RDAP registration)+10
Security & email hygiene+4
Prominence × continuity interaction+1
Calibration adjustment (published map)+21

These lines explain the underlying model score of 50/99, which is what places this site at 96/100 using the August 2026 scored sample. Public Authority is capped at 99.

Safety evidence

Retained threat-feed result (recorded about 28 days ago); name-similarity check available (recorded about 28 days ago); 3/3 transport and email checks available (oldest recorded about 28 days ago). This is evidence coverage, not a probability that a website is safe.

No caution flags in the available scoring observations; this is not a complete safety assessment

Site history

Dated record — historical facts always carry their date; self-description below is the 2013 record.

2004
Domain registered (May 29, 2004).
2006
First tracked by AboutUs (Aug 6, 2006); profile edited 7 times through 2013.
2013
Self-description at the time:
“Ubuntu.com is a Linux based operating system”
2026
Checked today — All 4 safety checks passed (Sep 17, 2026).

✓ domain continuity 22 years registered✓ live verified Sep 17, 2026

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