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Domains & Hosting
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Register a .io domain now

Showcase your creativity with a .io domain name.
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£33/1st year then £60/year
£1/1st year then £65/year
£12/1st year then £25/year
£9.60/1st year then £16/year

Popular with tech startups and more

Why register a .io domain?

Although the .io domain names have been around since as early as 1997, it is still less common than other generic and extremely popular top-level domains (TLDs). The .io country code domains are an attractive option amongst the tech and startup scene, largely due to the fact that the letters stand for input/output.

Input/output represents the fundamental concept of computers: every input results in an output. Businesses, companies and individuals alike can benefit from the creative freedom of choosing their ideal domain name; a meaningful, unique and concise name may be what it takes to position your business ahead of the competition.

More unique domains

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What does the .io domain extension stand for?

Despite its popularity amongst the tech industry, where the .io domain is commonly known as an abbreviation for input/output, the .io domain name in fact stands for the British Indian Ocean. As with most TLDs, each country or territory is assigned its own two-letter country code domain. Other country code top-level domains (ccTLDs) include .ca for Canada and for the United Kingdom.
In recent years, it is not only the tech and startup industry that has been taking advantage of the catchy country code domains, but also brands or words that are complemented by the .io name such as or This has naturally resulted in fewer businesses actually operating in the British Indian Ocean area using this domain extension. It has therefore become less of a representation of the British Indian Ocean, and more of a generic TLD.

Which features does my .io domain benefit from with IONOS

With IONOS, you can search for and select the domain of your choice at a reasonable price and thus secure the perfect web address for your digital content. We also offer you a complete service: businesses and individuals alike can create their own website in no time at all and customise it conveniently using the IONOS MyWebsite control panel. Choose from thousands of industry- and topic-specific design templates. At IONOS, you don't need any prior knowledge in programming and web design to make your own website attractive and functional. And with responsive web design, the IONOS MyWebsite editor allows you to optimise digital content for display on mobile devices and smartphones or tablets with just a few clicks.
We also take over the secure hosting of your website for you: an encrypted data exchange according to the latest SSL-certificate security standards is just as much part of the service package for private websites as it is for commercial websites. In addition, depending on the chosen tariff, we offer business customers extensive additional features such as helpful tools that support you in online marketing or setting up your own online shop. We also provide customers with a personal IONOS consultant who will competently assist you with all questions concerning your new website. All this and more awaits you when you choose a .io domain, or any other domain name of your choice.

Success on the web with your .io domain

Learn more about the benefits of .io domain names from IONOS.
.io domain featuresAvailable
Minimum and maximum length3-63 characters
Duration of registrationUsually a few hours
Registration policy
Email account with 2 GB mailbox space
Unlimited subdomains to structure your website
1 SSL certificate per domain registry
Advanced DNS management
Whois privacy included
24/7 customer support
Fast, simple domain setup
Secure your domain from hijacking risks with domain lock
Special offers for IONOS customers

.io domain

FAQ – Frequently asked questions

Getting a .io domain with IONOS couldn't be any easier. Simply enter your desired web address in the search bar and with just the click of a mouse, you'll find out if it is still available. If so, you can buy your .io domain directly, easily and cheaply. Our tip: make sure you get the domain you want before someone else does. Otherwise, it may already be taken, and can only be acquired if the website owner violates your name or trademark rights. At worst, this will then require litigation. All of this can be avoided by securing your .io domain early.

As soon as you have checked if your .io domain is available, you can also check if there are other domains available that you are interested in. You will automatically receive suggestions for additional domain names or top-level domains that may not have crossed your mind yet, but which may also be of interest to you. If this is the case, you can also place the corresponding domains in your shopping cart, and complete the purchase.

Your personal consultant

At IONOS, you have a dedicated contact person for personalised advice, tips to boost your online success, and technical support. Reach them via phone, chat and email, all at no cost to you as an IONOS customer.

Award-winning support

We're always working to improve our customer support, and we're proud to have won several awards. These include Best Customer Engagement Initiative and Best Use of Customer Insight.