All TLDs / .abb

What is .abb?

The short answer
.abb is a brand top-level domain, operated by ABB Ltd. 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
ABB Ltd

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

Is .abb a real domain extension?

Yes — .abb 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 .abb?

.abb is operated by ABB Ltd, per the IANA root database.

What is .abb used for?

.abb is a dot-brand registry — it's reserved for ABB Ltd and isn't used for third-party websites.

Can anyone register a .abb domain?

No. .abb 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.