No country codes begin with '0' at this time, although such assignments may now be possible, following ITU's Time 'T' of 31 December 1996 in which international number lengths were expanded, and the possibility of zone 0 country codes established.
Includes Canada, Caribbean countries, USA and its various territories.
Some country codes in World Zone 2 are not in Africa. Aruba (+297) is near the South American continent, but there are no spare codes available in World Zone 5. A free code from World Zone 2 seemed to be the next best choice.
Faroe Islands (+298) and Greenland (+299) are in the northern Atlantic, between North America and Europe. But for many years, there were no available country code assignments in the traditional European zones (World Zones 3 and 4). However, due to political upheavals such as the post-Soviet era national breakups, several codes have since become available in World Zones 3 and 4. There is no indication that these nations will be changing country codes, however.
+670 was once assigned to Northern Marianas until it joined the North American Numbering Plan. The code was since reassigned to East Timor.
Country code 7 was established during the years of the USSR. Since its dissolution, most of the republics under the former territory have established their own country codes throughout the 1990s.
Kazakstan continues to share +7 with Russia for the time being; there are no known plans for another country code assignment for Kazakstan at this update, although +990, +997 and +999 are likely candidates for such an assignment.
For a list of nations formerly under +7, see the Soviet Breakup section.