All TLDs / .ntt

What is .ntt?

The short answer
.ntt is a brand top-level domain, operated by NIPPON TELEGRAPH AND TELEPHONE CORPORATION. It's a “dot-brand” registry (ICANN Spec 13) — reserved for the operator's own use, so it isn't open for the public to register. It's live in the official IANA DNS root zone.
Type
Brand (dot-brand)
Registration
Closed (brand)
In DNS root
Yes
Operator
NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Source: IANA root zone database, checked October 18, 2026.

Is .ntt a real domain extension?

Yes — .ntt is a real top-level domain. It's present in the official IANA DNS root zone, which is the authoritative list of every live TLD on the internet.

Who runs .ntt?

.ntt is operated by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, per the IANA root database.

What is .ntt used for?

.ntt is a dot-brand registry — it's reserved for NIPPON TELEGRAPH AND TELEPHONE CORPORATION and isn't used for third-party websites.

Can anyone register a .ntt domain?

No. .ntt is a closed brand registry, so it isn't available for public registration. A registrar search will confirm the current policy for any specific name.