What is .co?

.co is Colombia's country code top-level domain. Unlike most country codes, Colombia opened .co to global registration and marketed it as shorthand for "company" or "corporation." This repositioning made .co a popular .com alternative.

The appeal is simplicity. .co is just two characters - the shortest TLD behind single-letter options. It looks clean on business cards, fits well in URLs, and suggests business use without spelling it out.

Major companies validated .co by adopting it for link shorteners: Twitter uses t.co, Google uses g.co, Amazon uses a.co. This visibility helped establish .co as legitimate despite being relatively new to global registration (2010).