What is .mlb?
Brand TLDs operate under Specification 13 of ICANN's registry agreement. It lets a trademark owner keep every second-level name for itself, so you won't find .mlb names for sale at any registrar.
.mlb entered the DNS root zone on May 25, 2016, 10 years ago. It came out of ICANN's New gTLD Program, the 2012 application round that grew the root from 22 generic TLDs to well over a thousand.
MLB Advanced Media DH, LLC also runs one other TLD, including .baseball.
On the technical side, .mlb is served by 6 authoritative name servers, every one of them reachable over IPv6. It is also DNSSEC-signed: the root zone carries a DS record for .mlb, which lets validating resolvers check its answers cryptographically. Registration data is published over RDAP.
Same registry, other endings
1 other TLD shares this operator.
.mlb FAQ
What country is .mlb?
None. .mlb is a generic top-level domain, so it isn't tied to any country.
Who owns the .mlb domain extension?
MLB Advanced Media DH, LLC operates .mlb as its registry, under a registry agreement with ICANN.
When was .mlb created?
.mlb was delegated to the DNS root zone on May 25, 2016.
Is .mlb a valid domain?
Yes. .mlb is an active top-level domain in the DNS root zone, delegated in 2016, so .mlb addresses work in every browser.
Can I buy a .mlb domain?
No. .mlb is a brand TLD under ICANN Specification 13, so names are reserved for MLB Advanced Media DH, LLC.
Is .mlb DNSSEC-signed?
Yes, the root zone holds a DS record for .mlb.
Sources
Data from IANA root zone version 2026102000. Last changed May 11, 2024. Spotted something wrong? Tell us.
