International Dial Code Lookup
Look up E.164 country calling codes (+1, +44, +81 …).
Overview
The International Dial Code Lookup returns the E.164 country calling code for any country - the leading digits you dial after the international access prefix. Type a country name or ISO code to get the calling code, or paste a code such as +44 to find which country it belongs to. The tool handles all 200-odd assigned country codes plus the shared NANP (+1) regions.
Country calling codes look simple but are surprisingly tangled. Some are one digit (+1 for the entire North American Numbering Plan, +7 for Russia and Kazakhstan), some are two digits (+44 UK, +91 India), and some are three (+212 Morocco, +673 Brunei). Several codes are shared between multiple states, and a handful of small territories piggyback on a neighbour's prefix. This lookup keeps that mapping straight so you can build clean phone number entry forms or sanity-check an international number.
How it works
The dataset is the ITU-T E.164 country code assignment list. Each entry maps a country (identified by ISO 3166-1 alpha-2 code) to its international calling code, recorded without the leading +. Forward lookups take a country name, alpha-2 or alpha-3 code and return the calling code. Reverse lookups take a code (with or without the + prefix) and return every country that uses it.
For NANP, a +1 lookup returns the United States and Canada along with the Caribbean territories that share the plan (Bahamas, Barbados, Jamaica and others), each distinguishable only by their internal area code. For shared codes such as +7, both Russia and Kazakhstan are returned.
Examples
- United Kingdom →
+44. Reverse+44→ United Kingdom only. - India →
+91. Reverse+91→ India only. - Russia →
+7. Reverse+7→ Russia and Kazakhstan. - Bahamas →
+1(NANP). Reverse+1returns the US, Canada, and every NANP Caribbean state.
FAQ
How do I dial a number internationally?
Replace the leading 0 of the trunk number with the country code, prefixed with your local international access code (00 in most countries, 011 in the US and Canada, or simply + from a mobile). So a UK number 020 7946 0958 becomes +44 20 7946 0958.
Why does +1 cover so many countries?
North America, Canada and most of the English-speaking Caribbean share the North American Numbering Plan. Inside +1, the next three digits are the area code, which uniquely identifies the country and region.
Is the data ITU-aligned?
Yes. The codes are taken from the ITU-T E.164 assignment list, the authoritative international standard.
Are special codes like +800 toll-free included?
The tool focuses on geographic country codes assigned to states and territories. Global services such as +800 (UIFN), +881 (satellite) and +888 (disaster relief) are not country-bound and are not included.