.bg cost (€12/year incl. VAT), with less restrictions and no dispute resolution. They are targeted mainly at private individuals. The domain has been enabled with Domain Name System Security Extensions (DNSSEC) since October 2007. On September 5, 2009, Register.bg started accepting second- and third-level domain names in Cyrillic with letters found in the Bulgarian language only. .bg The domain name .bg is the country code top-level domain (ccTLD) in the Domain Name System of the Internet for Bulgaria. It is currently operated by Register.BG. The domain name registration guideline impose the following restrictions: Domains can be registered by companies or citizens
Aircraft registration Convention on International Civil Aviation (Chicago Convention), signed in 1944, requires that all aircraft engaged in international air navigation bears its appropriate nationality and registration marks. Upon registration, the aircraft receives its unique "registration", which must be displayed prominently on the aircraft. Annex 7 to the Chicago Convention describes the definitions, location, and measurement of nationality and registration marks. The aircraft registration is made up of a prefix selected from the country's callsign prefix allocated by the International Telecommunication Union (ITU) (making the registration a quick way of determining the country of origin) and the registration suffix. Depending on the