All TLDs / .frontier

What is .frontier?

The short answer
.frontier is a brand top-level domain, operated by Frontier Communications 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
Frontier Communications Corporation

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

Is .frontier a real domain extension?

Yes — .frontier 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 .frontier?

.frontier is operated by Frontier Communications Corporation, per the IANA root database.

What is .frontier used for?

.frontier is a dot-brand registry — it's reserved for Frontier Communications Corporation and isn't used for third-party websites.

Can anyone register a .frontier domain?

No. .frontier 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.