Verifying against the live site and live WHOIS/DNS…
Common questions
Is sedo.com legit or a scam?
AboutUs doesn't label sites "legit" or "a scam": this page lists the dated registration, DNS, HTTPS, mail-authentication and safety checks we could verify, each with its source, so you can decide for yourself.
Who owns sedo.com?
Nobody has completed AboutUs's owner verification for sedo.com. That's true of most sites here — it isn't itself a warning sign.
Sedo is a domain marketplace where buyers and sellers trade domain names at fixed prices, through auctions, or via negotiation. It serves companies, startups, investors, and individuals seeking to buy, sell, or park domains from a catalog of over 19 million listings. The site operates across more than 150 countries with 3 million customers and offers brokerage services for premium domain acquisitions.
Make sure the site responds over HTTPS with a valid certificate.
Page metadata (passed)
Security headers (failed)
Add the HSTS, Content-Security-Policy, and X-Frame-Options response headers.
AboutUs has not vetted this site. Everything below is what we could measure automatically. Anything you do on the site — paying, sharing personal details, downloading — is between you and the site, not AboutUs.
Current facts
Latest available measurements; dated entries retain their dates. These are measurements, not an endorsement of the site.
latest result
Domain registered Sep 11, 1998 — 28 years old.
latest result
Registrar on record: World4You Internet Services GmbH — unchanged since AboutUs began tracking (Jul 23, 2026).
Authority 94/100— ahead of 94% of the August 2026 scored sampleClear
Why this authority score
94 is a percentile: higher than 94% of sites we score.
How it's calculated
Prominence (Tranco rank #802)+12
Verified continuity: 28.1 years (RDAP registration)+11
Security & email hygiene+4
Calibration adjustment (published map)+21
Model score: 48/99 — what these reason lines add up to.
Published Authority (percentile): 94/100 — this site's rank against the August 2026 scored sample. Public Authority is capped at 99.
Safety evidence
No unexpired threat-feed result; name-similarity check available (recorded about 22 days ago); 3/3 transport and email checks available (oldest recorded about 22 days ago). This is evidence coverage, not a probability that a website is safe.
Site history
Dated record — historical facts always carry their date; self-description below is the 2013 record.
1998
Domain registered (Sep 11, 1998).
2006
First tracked by AboutUs (Jun 21, 2006); profile edited 60 times through 2013.
2013
Self-description at the time:
“Sedo.com Marketplace for buying and selling domain names and websites.”