21vianet.com

21ViaNet.com provides data services and internet products in China

21ViaNet (China), Inc. provides internet data center services, including server hosting and colocation, along with broader internet products for the Chinese market. The company operates under the Chinese name 世纪互联 and is based in China, reachable via a Beijing phone number. Its DMOZ description identifies it specifically as an IDC provider offering hosting and server rental services.

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Authority

—/100

Safety

90/100

Registered

Apr 13, 2000

26 years old · Alibaba Cloud Computing (Beijing) Co., Ltd.

1 of 2 safety checks passed (Sep 13, 2026).

AboutUs has not vetted this site. 1 of 2 automated safety check did not pass. 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.

Authority & Safety, with the evidence

How this is scored →

Authority: not enough signals yetClear

Why we're not scoring this yet

We withhold an authority number until independent evidence (global rank, link-graph presence) has accrued. The facts we do have about this site are shown below — we'd rather say “not enough signals yet” than invent a low score.

Safety evidence

No unexpired threat-feed result; name-similarity check available (recorded about 26 days ago); 3/3 transport and email checks available (oldest recorded about 26 days ago). This is evidence coverage, not a probability that a website is safe.

Recorded HTTPS check did not confirm a valid connection
Missing DMARC (mild)

Site history

Dated record — historical facts always carry their date.

2000
Domain registered (Apr 13, 2000).
2026
Checked today — 1 of 2 safety checks passed (Sep 13, 2026).

✓ domain continuity 26 years registered✓ live verified Sep 13, 2026

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