.co (second-level domain)
In a number of countries, .co is used as a second-level domain in the Domain Name System used to route internet traffic. Domain registrants register second-level domains of the form.co. xx, where xx is the country code top level domain.
Countries using.co as a second-level domain include: Barbados, Cook Islands, Costa Rica, India, Indonesia, Israel, Japan, New Zealand, South Africa, South Korea, Thailand, United Kingdom and Venezuela.
.co is also a country top-level domain corresponding to Colombia. Its current manager, Neustar, markets it to global markets as an alternative to.com, or as a generic country code top level domain gccTLD.
