Available Sublevel Domains   CZ, INT.CZ, ORG.CZ 
Other restrictions details  None 
Min Characters per Domain Name 
Max Characters per Domain Name  63 
Purely numeric domain  Yes 
IDN offered   
Reserved words list / link   Domain must not start or end with the "-" character, must not contain two "-" characters next to each other, must comply with standards RFC 1034, 1035, 1122, 1123, and with any superseding or supplementing standards. 
Name Server registration needed  No 
Zone Preload  Yes 
Mail Address  Yes 
Local DNS required  No 
Minimum number of name servers 
Maximum number of name servers 
Dispute Resolution Policy  Multiple: ERP, UDRP, etc. 
Dispute Resolution Policy Link  http://www.icann.org/udrp/udrp-policy-24oct99.htm  
NIC Registration Agreement  http://www.information.aero/index.php?id=66