All TLDs / .open

What is .open?

.open is a brand top-level domain, operated by American Express Travel Related Services Company, Inc. 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

Registry operator: American Express Travel Related Services Company, Inc. — per the IANA root database.

Source: IANA root zone database, checked August 23, 2026.

Is .open a real domain extension?

Yes — .open 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 .open?

.open is operated by American Express Travel Related Services Company, Inc., per the IANA root database.

What is .open used for?

.open is a dot-brand registry — it's reserved for American Express Travel Related Services Company, Inc. and isn't used for third-party websites.

Can anyone register a .open domain?

No. .open 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.

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