What is .ntt?
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 .ntt names for sale at any registrar.
ICANN's records put the delegation of .ntt on February 3, 2015. Like most of the newer endings, it was applied for in the 2012 New gTLD Program round and its registry agreement was signed on October 31, 2014.
Under the hood, the root zone points to 4 name servers for .ntt, every one of them reachable over IPv6. The delegation is DNSSEC-signed, so resolvers can verify that answers for .ntt haven't been tampered with on the way. Registration data is published over RDAP and WHOIS (the WHOIS server is whois.nic.ntt).
.ntt FAQ
What country is .ntt?
None. .ntt is a generic top-level domain, so it isn't tied to any country.
Who owns the .ntt domain extension?
NIPPON TELEGRAPH AND TELEPHONE CORPORATION operates .ntt as its registry, under a registry agreement with ICANN.
When was .ntt created?
.ntt was delegated to the DNS root zone on February 3, 2015.
Is .ntt a valid domain?
Yes. .ntt is an active top-level domain in the DNS root zone, delegated in 2015, so .ntt addresses work in every browser.
Can I buy a .ntt domain?
No. .ntt is a brand TLD under ICANN Specification 13, so names are reserved for NIPPON TELEGRAPH AND TELEPHONE CORPORATION.
Is .ntt DNSSEC-signed?
Yes, the root zone holds a DS record for .ntt.
Sources
Data from IANA root zone version 2026102000. Last changed December 11, 2025. Spotted something wrong? Tell us.
