Country Codes -

: North American Numbering Plan (USA, Canada, and many Caribbean nations). +44 : United Kingdom . +20 : Egypt . +81 : Japan .

These are based on the ISO 3166-1 alpha-2 codes and tell both users and search engines where a website is based. For example: : Germany .fr : France .cn : China .mx : Mexico country codes

For developers and marketers, country codes are a technical necessity. International SEO (Hreflang) : North American Numbering Plan (USA, Canada, and