.mil
.mil is a sponsored extension, run for a specific community, run by DoD Network Information Center since 1985. The United States Department of Defense only.
| Type | Sponsored |
|---|---|
| Registry operator | DoD Network Information Center |
| Who can register | Rules apply The United States Department of Defense only. |
| In the root zone since | 1 January 1985 |
| DNSSEC | Signed |
| RDAP server | None listed |
| WHOIS server | None listed |
| IANA record | iana.org/domains/root/db/mil |
New to extensions? The guide to how domain extensions work covers generic, country-code and brand extensions. For who sells extensions in general, see the list of domain registrars.
Sources: the IANA root zone database and the ICANN list of generic extensions (refreshed 2026-10-24). Something out of date? Tell us.
Frequently asked questions
Who runs the .mil extension?
DoD Network Information Center is the registry operator for .mil. The registry keeps the list of every .mil name; registrars sell the names to the public.
Can anyone register a .mil domain?
The United States Department of Defense only.
When was .mil created?
.mil was added to the DNS root zone on 1 January 1985, according to IANA.
How do I look up who owns a .mil domain?
The .mil registry doesn't publish a public RDAP or WHOIS server listed with IANA, so registration data has to come from the registry's own website.
Is .mil signed with DNSSEC?
Yes. The .mil zone is signed, so a .mil domain can turn on DNSSEC once its registrar adds a DS record.