cbttape.org

Cbttape.org provides a variety of downloads and links for IT professionals

The CBT tape is a collection of freeware almost all open-source distribution for the IBM mainframe MVS and OS/390 operating system environment.

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Authority

—/100

Safety

90/100

Registered

Oct 7, 1998

27 years old · Key-Systems GmbH

4 of 5 safety checks passed (Sep 10, 2026).

AboutUs has not vetted this site. 1 of 5 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

What AboutUs observed on the live site and in WHOIS/DNS today. These are measurements, not an endorsement of the site.

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Domain registered Oct 7, 1998 — 27 years old.

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Registrar today: Key-Systems GmbH — unchanged since AboutUs began tracking (Jul 31, 2026).

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Live site responds over HTTPS.

Trust record

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

All checked sources came back clean

Site history

Dated record — historical facts always carry their date.

1998
Domain registered (Oct 7, 1998).
2026
Checked today — 4 of 5 safety checks passed (Sep 10, 2026).

✓ domain continuity 27 years registered✓ live verified Sep 10, 2026

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