Places, codes & formats

Country codes, calling codes, postal formats, time zones, plugs and capitals — look up any place-based reference.

• Major airport IATA codes Three-letter IATA codes for the most-searched international airports worldwide, each listed with the city and country that the airport code serves.
• International dialing codes by country International dialing codes for 38 countries with example local numbers — find any +code instantly and call abroad with the right prefix order.
• Country capitals (selected) Quick reference to the capitals of frequently searched countries and regions, with multi-capital cases noted — use Ctrl+F to find any country fast.
• Currency codes (ISO 4217) ISO 4217 currency codes with symbols and minor units for 30+ major currencies — look up any code like USD, JPY or EUR instantly and confidently.
• ISO country codes (alpha-2 / alpha-3) ISO 3166-1 alpha-2 and alpha-3 codes for the world's countries and key regions, in one quick reference for forms, checkout flows and localization.
• Postal code formats by country Postal code and ZIP code formats by country and region: common patterns, lengths, and examples. Scan the table or use Ctrl+F to find a country.
• Country power plug types and voltage Plug types (A–N), voltage, and frequency for 20 countries and regions — find your destination's outlets in seconds and check before you travel.
• Common timezone UTC offsets Standard UTC offsets for major world time zones and cities, from London to Tokyo. Daylight saving shifts clocks — double-check before scheduling.
• US state and territory abbreviations Two-letter USPS abbreviations for all 50 U.S. states, plus DC and the main territories, as used on shipping labels, tax forms, and address APIs.