General
- Extension
- .ltd.uk
- Type
- Second-level extension
- Meaning
- Second-level zone under .uk (United Kingdom)
- Parent extension
- .uk
- Registry
- Nominet UK
- Registry website
- www.nic.uk
- Registered since
- 24 July 1985 (.uk)
Properties
- DNSSEC in the root zone
- .uk: yes
- Name servers
- .uk: 8 (8 with IPv6)
- WHOIS server
- -
- RDAP server
- rdap.nominet.uk/uk
- At 1blu
- on request via kissdomain
Registration conditions
- Who may register?
- Only companies on the Companies House register of names that may use “Limited” or “Ltd” in their name.
- Allocation
- In order of application (first come, first served).
- Length
- The full name including the extension has at most 64 characters.
- Characters
- a–z, 0–9 and hyphen, no hyphen at the beginning or end. No IDN names.
- New rules
- From 9 February 2027, Nominet's new UK Registration Policy applies.
Sources: Nominet: Rules of registration (20 March 2024) · Nominet: UK Registration Policy 2026-03 (from 9 February 2027) · IANA Root Zone Database: .uk · As of 25 October 2026