Published: 11.06.2026
The .co extension is a single letter away from .com, and that is exactly why so many young companies chose it. It combines a short, modern look with a meaning that fits business: company, community, corporation.
Check if a .co domain is available .co Check
A short history
.co is the national domain of Colombia, delegated in the early 1990s. For many years it was a local extension used by Colombian organisations, and it was almost unknown abroad. In 2010 it was relaunched for the world: the registry began to offer names to everyone and promoted the zone as a short alternative to .com. The launch was successful, and a number of well-known technology companies and media projects took names in the zone. Since then it has become one of the most popular country-code extensions used as a generic one.
Who runs it
The zone is run by a commercial registry operator that works under an agreement with the Colombian authorities. Over the years the operator changed owners as the registry business was consolidated. Customers register names through registrars, and the registry maintains the central database and name servers.
Rules in practice
- Open to everyone: you do not need to live or work in Colombia.
- Technical limits: up to 63 characters with letters, digits and hyphens; internationalised names are supported.
- Periods: registrations of one to ten years.
- Second-level names: Colombia also has regional structures such as .com.co and .org.co, which are separate and have their own rules.
Who uses .co
- Start-ups that want a short and modern name.
- Companies that could not get their name in .com.
- Personal brands, portfolios and small consultancies.
- Campaign sites and URL shorteners.
- Organisations in Colombia and Latin America that want a national address.
Strengths
The extension is short, easy to type and widely known. A name in .co is usually easier to find than the same name in .com, and it reads as "company" for English-speaking users. The zone is well supported by all platforms, mail services and tools.
Weaknesses and risks
- Typing mistakes: people may type .com instead of .co or the reverse. A visitor sent to the .com owner's site is a lost customer.
- E-mail errors: mistyped addresses can send messages to the wrong domain, so give clear instructions when you share your address.
- Price: good names can be sold at premium prices, and renewal prices may be higher than for classic zones.
Tips before you register
- Check the same name in .com. If it belongs to a competitor, think about the risk of confusion.
- Consider registering your name in both zones and redirecting one to the other.
- Use the full domain in business cards and e-mail signatures.
- Check trademark databases to avoid disputes.
- Set the contact e-mail and the auto-renewal carefully.
Frequently asked questions
Does .co mean Colombia only? It is the national code, but it is open worldwide and used as a short form of "company".
Is .co good for SEO? Search engines treat it as a generic extension. Quality, not the ending, decides the position.
Can I use .co for e-mail? Yes, with the usual MX, SPF, DKIM and DMARC records.
