Area Codes by Country

Find city and regional dialing codes for any country. Complete directory of telephone area codes, trunk prefixes, and number formats.

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Countries
114+
Area Codes
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Database

Understanding Area Codes

What are Area Codes?

Area codes (also called city codes or STD codes) are numerical prefixes that identify specific geographic regions within a country's telephone system.

Trunk Prefix

Many countries use a trunk prefix (like "0" or "1") for domestic calls. When calling internationally, you typically drop this prefix.

International Format

International format: +[Country Code] + [Area Code] + [Local Number]. Example: +44 20 XXXX XXXX for London.

Countries with Detailed Area Codes

All Countries by Region

Complete Guide to Telephone Area Codes

Area codes are essential for routing telephone calls within a country. Each area code corresponds to a specific geographic region, city, or metropolitan area. Understanding area codes helps you dial correctly and can even help identify the origin of incoming calls.

Types of Telephone Codes

  • Country Code: International dialing prefix (e.g., +1 for USA, +44 for UK)
  • Area Code: Regional/city identifier (e.g., 212 for NYC, 20 for London)
  • Trunk Prefix: Domestic long-distance prefix (e.g., "0" in UK, "1" in USA)
  • Mobile Prefix: Identifies mobile numbers (e.g., 07 in UK, various in USA)

Common Area Code Formats

  • North America: 3-digit area codes (NPA-NXX-XXXX format)
  • Europe: Variable length (1-4 digits typically)
  • Asia: Usually 1-3 digits for major cities
  • Australia: Single-digit state codes (02, 03, 07, 08)