.cat is for Catalunya, and only open for sites in Catalan. .co is for Colombia Google uses both: http://www.google.cat/ http://www.google.cat/ (in Catalan)

.cat is for Catalunya, and only open for sites in Catalan. .co is for Colombia Google uses both: http://www.google.cat/ http://www.google.cat/ (in Catalan) http://www.google.com.co/ http://www.google.com.co/ (in Spanish)