.gov

Available Sublevel Domains   None 
Other restrictions details  Must be an aviation company. Including, b.n.l.t. Carriers, handlers, pilots, etc.: Aerial works Air freight & logistics companies Air safety, medical and certification Airlines and commercial operators Aviation distribution systems Aviation industry associations Aviation professionals Business aircraft operators Government organisations linked to aviation Recreational aviation Aerospace Air navigation services providers Air sports Airports Aviation education and research Aviation media Aviation suppliers & service providers Civil aviation authorities Pilots 
Min Characters per Domain Name 
Max Characters per Domain Name  63 
Purely numeric domain  Yes 
Reserved words link   
Name Server registration needed  No 
Zone Preload  No 
Mail Address  No 
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   
NIC Registration Agreement