.co.uk Domain: the UK's Established Commercial Space
.co.uk is one of the second-level zones under .uk, the country code extension of the United Kingdom, and it is the country's most established address space. The registry is Nominet UK in Oxford, a not-for-profit public benefit company registered in England under number 3203859. .uk entered the root zone on 24 July 1985, and by the registry's own publication the .uk family was among the three largest country extensions in 2025, with more than ten million registered names.
The rules declare .co.uk an «Open SLD» and place no restriction on the applicant's status: no UK company, address or representative is required. The zone's own charter says names are «intended» for commercial purposes, but the same clause removes any enforcement — the registry states that it will take no action in respect of registrations that do not comply with the charters. Commercial use is therefore a non-binding statement of intent, not an eligibility test.
The post-expiry calendar is published day by day: for the first 30 days the name works fully, between day 30 and day 90 it no longer resolves but can still be renewed, between day 90 and day 95 renewal closes, and on day 95 it drops at the time announced in the public daily list. The lookup infrastructure is changing too: the WHOIS service for .uk closes on 9 February 2027 and gives way to RDAP. Because this pool is so full, try the direct .uk level for short names as well, and check your candidate on the domain name search screen.
.CO.UK Domain at a Glance
- Registry Nominet UK — public benefit company, no. 3203859, Oxford
- Zone status Open SLD — no restriction on the applicant's status
- Commercial use An expectation in the charter; the registry takes no action on non-compliance
- After expiry 30 days fully working, renewable without resolving until day 90, drops on day 95
- Data validation The registry matches registrant name and address against third-party sources
- Lookup infrastructure WHOIS closes on 9 February 2027 and is replaced by RDAP
- Document Requirement No documents are required to register a .co.uk domain
- Country United Kingdom
- Character Length 1 - 63 characters
- Registration Period 1 - 10 years
- Name Server Count 1 - 10 servers
.co.uk Domain Prices — No Surprise Fees
Registration, transfer and renewal fees are listed separately. The renewal price can differ from the first-year price, so you see both up front.
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New Registration
$11.99 /year -
Renewal
$21.99 /year -
Restore
$64.90 -
Late Renewal
$4.00
Included With Every .co.uk Domain
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Free DNS management
Change A, MX, TXT and CNAME records yourself from the panel — no waiting on anyone when you move a site or mailbox.
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Domain lock
While the lock is on, nobody can move your domain to another registrar without your approval.
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Domain forwarding
Point the domain at your existing site, a campaign page or a social profile — at no extra cost.
.co.uk Domain Lifecycle
What happens day by day after it expires
Day 0 is the domain's expiry dateIn short: for .co.uk the post-expiry timeline is set by the registry, so it differs from one extension to the next. The diagram below shows the windows that actually apply to .co.uk, day by day. One thing never changes, whichever extension you hold: renewing before the expiry date is always the cheapest and safest route.
Domain Is Available (Available)
A .co.uk address at this stage has not been taken yet, and it goes to whoever registers first. Check the name you have in mind — if it is free, it can be yours within minutes.
Domain Is Active (Active Period)
Once registration is complete, the domain is registered to you for the term you selected. You can renew at any point before it expires to keep it active, or switch on auto-renewal so you never have to watch the date.
Redemption Period (Redemption Period)
The domain is not released the moment it expires — during this window it is still yours and can be recovered. Some extensions charge an extra restore fee at this stage, so renewing before expiry is always the cheaper route.
Pending Delete Period (Pending Delete Period)
If the redemption window is missed too, the domain enters the final stage and waits to be deleted. Renewal and recovery are no longer possible here; when the period ends the registration is removed for good.
Domain Is Available Again
Once deletion completes, the domain leaves the system and anyone can register it — popular names are often taken the same minute by someone watching. Keep auto-renewal on so a name you care about never gets this far.
.co.uk Domain Specifications and Registration Rules
Registration conditions, supported features and the registry's own timelines in a single table.
.co.uk Domain Registration
- Document Requirement No documents are required to register a .co.uk domain
- Country United Kingdom
- Character Length 1 - 63 characters
- Registration Period 1 - 10 years
- Name Server Count 1 - 10 servers
.co.uk Domain Support
- IDN Support No
- Transfer Support Yes
- Late Renewal Support Yes
Frequently Asked Questions About .co.uk Domains
The questions people actually ask before registering — answered plainly.
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No. The rules declare .co.uk an «Open SLD» and place no restriction on the applicant's status; the general clause adds that the registry does not limit who may register, which names they may hold or how many. No UK company, address or representative is required. A company requirement exists only in the closed zones: .ltd.uk and .plc.uk require a company registered at Companies House.
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No. The zone's charter says names are «intended» for commercial purposes and that the third-level name should reflect those purposes, but the same rules remove any enforcement: the registry states it will take no action in respect of registrations that do not comply with the charters. Commercial use is therefore a non-binding statement of intent. Publishing a personal project or blog on a .co.uk name breaks no rule.
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The calendar is published day by day. For the first 30 days the name works fully and can be renewed. From day 30 to day 90 the name no longer resolves — your site and email will not open — but renewal is still possible. From day 90 to day 95 renewal closes. On day 95 the name is released at the UTC time announced in the registry's public daily drop list. Random dropping was abolished in 2022.
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Yes. The contract requires the holder to give a correct name, postal address, phone and email, and to respond quickly to any verification request; if the registry believes the details are significantly inaccurate, unreliable or false, the name may be cancelled or placed in a special status. The result appears in the WHOIS output: in a record we inspected on 13 August 2026 it showed the date on which the registry matched the registrant data against a third-party source.
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Not by default. The registry's field definitions say it plainly: the registrant's name and address are not disclosed by default; to publish them you must open the relevant fields with the registrant's permission. The contract adds that personal data appears in WHOIS only where consent has been given. The registry also runs a formal proxy service framework for registrars. You can inspect a live record from the whois search screen.
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Not by the UDRP but by the registry's own Dispute Resolution Service. A complainant must prove two things together, on the balance of probabilities: that they have rights in a similar name or mark, and that the name is an abusive registration in the respondent's hands. Free mediation run by the registry comes before any expert stage, and if the parties settle the case closes there. If the respondent files no response, mediation does not happen and the complainant may request a summary decision.
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The upper limit for the third-level label is 63 characters, and measurement confirms it: a 63-letter .co.uk name registered on 8 December 2021 is still active. The lower limit is one character; single-letter names are registered in this zone. Permitted characters are the letters a-z, the digits 0-9 and hyphens, and a name may not begin or end with a hyphen. Internationalised names are not supported — the rules state plainly that names beginning «xn--» may not be registered.
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