วิธีค้นหา กด Ctrl + F แล้วใส่ชื่อประเทศในกล่องค้นหา
Zone 1 – North American Numbering Plan AreaAreas within NANPA (North American Numbering Plan Area) are assigned area codes as if they were all areas within one country. The codes below in format +1 XXX represent area code XXX within the +1 NANPA zone — not a separate country code.
The North American Numbering Plan Area includes:
Zone 2 – Mostly Africa, some Atlantic and Indian Ocean islands
Zones 3/4 – EuropeOriginally larger countries, such as the United Kingdom or France, were assigned two-digit codes (to compensate for their usually longer domestic numbers) and small countries, such as Iceland, were assigned three-digit codes; however, since the 1980s, all new assignments have been three-digit regardless of countries’ populations.
Zone 5 – Mexico, Central America and South America
Zone 6 – Southeast Asia and Oceania
Zone 7 – Seventh World Numbering Zone (former Soviet Union)
Zone 8 – East Asia and Special Services
Zone 9 – West, South and Central Asia