ccTLD

.io domain information

The .io TLD is a popular choice for tech-oriented businesses and startups, reflecting innovation and creativity.

DNSSEC Support: Yes IDN Support: No Updated: 2026-05-28

Introduction

The .io top-level domain (TLD) is a country-code TLD originally designated for the British Indian Ocean Territory. However, it has become widely recognized and utilized by technology companies, startups, and developers around the globe. Its association with input/output, a common computing term, enhances its appeal to tech-savvy users. .io domains are unrestricted, allowing anyone to register them without geographical limitations. With support for DNSSEC and privacy protection options, .io offers a secure and flexible choice for those looking to establish an online presence in the tech industry.

Target market

The .io TLD is primarily aimed at technology startups and developers.

Restrictions

None

Intended use

.io was originally assigned to the British Indian Ocean Territory but has gained popularity among tech companies and startups as a domain for innovation and technology.

Registration rules

Domain names must be between 1 and 63 characters.
Only alphanumeric characters and hyphens are allowed.
Certain names may be reserved or restricted.
No specific eligibility requirements.

Renewal policy

Check registry policy

Transfer policy

Check registry policy

Dispute resolution policy

UDRP / URS

Typical users

startups, software developers, tech companies

Registry url

https://www.iana.org/domains/root/db/io.html
https://www.gandi.net
https://www.namecheap.com

Registrar prices

Registrar Lowest registration Renew Transfer Fetched
Porkbun $28.12 $51.80 $51.80 2026-05-28
Spaceship $39.98 $49.98 $39.98 2026-05-28
Cloudflare $47.43 $47.43 $47.43 2026-05-28