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10,718 available .io one-word domains

  • Simplify your life with access to lists of available one-word domains from different top-level domains
  • Perfect for your investments or upcoming projects and start-ups
  • Alphabetically sorted list in spreadsheet format
  • With grammatical classes and sentiment
  • An additional list summarising newly available domain names for each TLD
  • Receive weekly updates in your inbox
  • A one-off purchase at an affordable price

About the .io TLD

What is the .io TLD?

A .io TLD is a top-level domain originally assigned to the British Indian Ocean Territory but widely used by technology companies and startups.

Facts about the .io TLD

The .io TLD gained popularity among tech startups and companies due to its association with 'IO' as an abbreviation for 'input/output' in computing. It's commonly used for technology-related websites and services.

Why choose the .io TLD?

Using a .io TLD can help technology companies and startups establish a modern and innovative online presence. It's recognized within the tech industry and can attract tech-savvy users.

For what uses should I choose the .io TLD?

It's ideal for technology startups, software companies, IT firms, and businesses offering tech-related products or services.

Who can buy a .io domain?

Anyone can register a .io domain name, and it's particularly popular among technology companies and startups seeking a domain extension that reflects their tech focus.

Get started now!

Access mononames reports, updates, and future one-word domain names availability reports for only $49.99 in a
one-off purchase.

Why choose mononames?

A wide range of TLDs supported

mononames monitors a wide variety of TLDs.
Over 2 million domains at your fingertips, and the list is still growing.

Spreadsheet format

Once downloaded, you don't need an account or Internet access to open my reports. The spreedsheet format, sorted in alphabetical order and with easy sorting options, you'll love it.

Receive weekly updates in your inbox

With mononames, you can simplify your life: every week I'll let you know what's new in the mononames lists.

An affordable purchase

For just $49.99 in a one-off purchase, you get access to all one-word domain names availability reports, updates and future reports.

How it works?


mononames builds a list of over 35,000 English words, with their grammatical classes and sentiment.
In the future, foreign-language words will be added to the list.


mononames checks over 90 TLDs to see if the words on its proprietary list are available.


mononames then generates reports for the various TLDs in spreadsheet format, with grammatical classes and sentiment.

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