All TLDs / .pfizer

What is .pfizer?

The short answer
.pfizer is a brand top-level domain, operated by Pfizer 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
Operator
Pfizer Inc

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

Is .pfizer a real domain extension?

Yes — .pfizer 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 .pfizer?

.pfizer is operated by Pfizer Inc., per the IANA root database.

What is .pfizer used for?

.pfizer is a dot-brand registry — it's reserved for Pfizer Inc. and isn't used for third-party websites.

Can anyone register a .pfizer domain?

No. .pfizer 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.