All TLDs / .mtr

What is .mtr?

The short answer
.mtr is a brand top-level domain, operated by MTR Corporation Limited. 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
MTR Corporation Limited

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

Is .mtr a real domain extension?

Yes — .mtr 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 .mtr?

.mtr is operated by MTR Corporation Limited, per the IANA root database.

What is .mtr used for?

.mtr is a dot-brand registry — it's reserved for MTR Corporation Limited and isn't used for third-party websites.

Can anyone register a .mtr domain?

No. .mtr 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.