International Call Prefix :00 On September 22, 2002, the Czech Republic adopted a closed numbering plan, with nine-digit numbers used for local and national calls, and the dropping of the trunk code 0. Before the change, the following arrangements would have been made for calls to Brno : Local call:xx xx xx xx National call:05/xx xx xx xx International call:+420 5 xx xx xx xx After the change, the dialing arrangements for calls to Brno were as follows: Within Czech Republic:5xx xxx xxx Outside Czech Republic:+420 5xx xxx xxx In the case of mobile numbers, which had to be dialed in full, the only change was that the 0 was no longer used: Within Czech Republic:602 xxx xxx Outside Czech Republic:+420 602 xxx xxx