For startups, companies and modern online brands.
Find and register
your perfect .co domain.
Secure a concise address for your company, product or personal brand with live availability and straightforward renewal pricing.
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Fast Registration
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WHOIS Privacy Included
WHOIS Privacy
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Clear Renewal Pricing
Clear Renewals
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24/7 UK Support
Knox AI Naming Coach
Need a sharp name for your company?
Tell Knox what you are building and who it is for. It will create relevant .co ideas and check their availability live.
What is a .co domain?
A .co domain gives you a short address for a website, project or email. It is Colombia's country-code domain ending, although you will also see it used by brands elsewhere. It is a separate extension from .com and .co.uk, with its own availability and registration.
A short name with room to grow
A .co address can work for an independent studio, a new product, a consultancy or your own portfolio. You do not have to describe everything you do in the domain. A clear, memorable name leaves space for your website to explain the details.
Try saying it to someone before you commit. Can they spell it back correctly? That small test is useful when your address will appear on packaging, business cards or a social profile.
.co or .com: think beyond availability
If your first choice is taken under .com, check the .co version, but also look at who uses the existing name. A different ending can still leave visitors confused if the names are too similar.
Make the full address clear wherever you share it: people may add an extra “m” out of habit. For a mainly UK audience, compare .co.uk too. Each extension needs its own registration; one purchase does not reserve the others.
You can start with email
You do not need a finished website to use an address such as hello@yourname.co. Register your domain and add a separate email hosting service to create your mailbox.
When the website is ready, connect the same domain to web hosting or a compatible website platform. Domain registration, website hosting and email are different services, so choose the parts you need now and add others later.
Check the name and the ongoing cost
Look at renewal pricing as well as the first registration price. Check the selected term and any special pricing shown for the exact name before you order. A short address is only useful if it fits your budget to keep it.
Use an account and contact email you control, and keep them up to date. If someone is setting things up for you, agree who will manage renewals and make sure you can access the domain afterwards.
Simple 4-Step Onboarding
How .co Registration Works
Search live availability, choose your term and complete registration through the secure Knox ordering system.
1. Search Domain
Type your company, product, startup or brand name. Knox checks live registry availability and formats the .co search cleanly.
2. Choose Term
Choose the available registration term. Add optional web hosting or professional email if needed, or continue with the domain alone.
3. Registrant Details
Enter accurate contact details for the registrant. These details form the ownership record held for the domain.
4. Manage in Knox
Once registration completes, manage renewal, nameservers and supported DNS options from your Knox account.
Domain Ownership and Contact Details in Plain English
A .co registration needs accurate ownership and contact information. Where privacy is available, proxy details can be shown publicly while your verified account information remains with the registrar.
Personal registrations
Use your real name and current contact details. WHOIS privacy can protect eligible personal information from routine public lookup.
Company registrations
Register the name to the correct company or trading entity and keep its address, email and telephone details accurate.
Transparent Term Pricing
Clear, Honest Pricing with Zero Renewal Traps
Registration and renewal prices are loaded directly from Knox, so the amount shown here matches the price used when you continue to checkout.
Register
New .co
£29.95
/yearWhat’s included
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Global .ORG Registration
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WHOIS privacy where available
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Instant DNS Control Panel
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£29.95/year
Renew
Keep Your Name
£29.95
/yearWhat’s included
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Global .ORG Registration
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Clear renewal pricing
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Instant DNS Control Panel
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Manage auto-renew from Knox
Transfer
Move to oXnames
Simple
domain transferWhat’s included
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Keep your existing registration
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Nameserver control in Knox
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UK support if you need help
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Any charge confirmed before transfer
Bring Your Domain to oXnames
Already have a .co domain elsewhere?
Move its management into Knox using the domain's transfer authorisation code. Your website and email can remain in place while the registrar transfer completes, and any charge is shown before you confirm.
Optional Ecosystem Next Steps
Build Around your .co Domain
Launch your company website, create professional email or point the domain at an existing platform. The domain remains fully usable as a standalone purchase.
Web Hosting
UK RAID 10 Web Hosting
UK hosting built on resilient RAID 10 SSD storage in Nottingham and Coventry, with straightforward management through Knox.
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RAID 10 SSD Storage
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Optional backup services
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One-Click WordPress Installer
Domain Email
Professional Email
Create addresses such as hello@yourcompany.co. Keep sales, customer and partnership messages on your own domain.
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10 GB Secure Mailbox Storage
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Built-in Spam & Antivirus Guard
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Webmail & Outlook/Mobile Sync
Included with the Domain
DNS Management
Manage supported DNS records, nameservers and URL forwarding through Knox, whether the site is hosted with oXnames or elsewhere.
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Free SSL Certificate Auto-Renew
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Unlimited A, CNAME, MX Records
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Domain Forwarding & Stealth
Live Global Domain Search
Check your .co name in Knox
yourbrand.co
Live check in KnoxKnox checks the registry, then shows available alternatives, live prices and transfer options without making you sign in first.
Registration Useful company name routes
Useful company name routesExamples update as you type above
A Short Address for Modern Brands
Built for Ideas Ready to Become Companies
A concise .co address suits businesses that want a clean, international identity without tying the brand to one product or location.
Startups & New Companies
Give a new venture a short, memorable address that works from its first launch through future growth.
Digital Products
Create a compact home for an app, platform, service or software product that needs an international identity.
Creators & Consultants
Use one professional address for your portfolio, enquiries, services and branded email.
International Brands
Choose a location-neutral address for a company serving customers across the UK and beyond.
Honest SEO guidance: what a .co can and cannot do
A .co does not guarantee a search ranking. Useful content, technical quality and genuine authority matter far more. A clear, memorable .co can still help people recognise, trust and return to your brand.
Choose a Name Customers Remember
Naming a Strong .co Domain
Keep the address easy to say, easy to type and broad enough to represent the business as its products and audience grow.
Keep it Concise & Punchy
Shorter names are easier to type on smartphones and remember.
Aim for 1 to 3 words (under 15 characters total). Avoid cluttering your brand name with unnecessary filler words.
Do Example
launchpad.co
Avoid
our-new-company-online.co
Pass the Radio Test
Ensure your name is easy to spell when spoken out loud.
If you mention the address in a podcast, video or conversation, will a listener know how to spell it without having to see it written down?
Do Example
northstar.co
Avoid
n0rth-star-online.co
Avoid Awkward Hyphens
Hyphens and double letters cause accidental typos.
Long strings, awkward hyphens and repeated letters make a domain harder to share in conversation, advertising and customer emails.
Do Example
buildbetter.co
Avoid
build-better-company-online.co
Choose a Name That Can Grow
Give the company room to expand its products and reach.
A useful .co can develop from a first product into a wider company or international brand. Avoid a name that restricts every future idea to one narrow service.
Do Example
openstudio.co
Avoid
only-2026-local-app.co
Frequently Asked Questions
Your Questions, Answered
Your .co starts here
Search live .co availability, compare useful alternatives and continue through the secure Knox checkout when you find the right name.
