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International Dialling Code Reverse Lookup - Online Country by Code

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International Dialling Code Reverse Lookup

Enter any international dialling code to instantly find the corresponding country. Supports 240+ countries and territories worldwide.

Popular: 🇺🇸 +1 🇬🇧 +44 🇨🇳 +86 🇮🇳 +91 🇯🇵 +81 🇩🇪 +49 🇫🇷 +33 🇦🇺 +61 🇷🇺 +7 🇮🇹 +39
240+ Countries 7 Continents Updated 2024

Type a code above to see matching countries,
or browse the complete list below.

Complete Country Code List
Flag Country Code ISO Continent
Did You Know?

🌍 ITU Assignment: International dialling codes are assigned by the International Telecommunication Union (ITU), a UN specialized agency based in Geneva.

📞 +1 is Shared: The +1 country code is used by the United States, Canada, and many Caribbean nations — making it the most widely shared dialling code.

🔢 Code Lengths: Country codes range from 1 digit (+1, +7) to 4 digits (+1671 for Guam). Most European countries have 2-digit codes.

Frequently Asked Questions
What is an international dialling code?
An international dialling code (also called a country calling code or IDD prefix) is a numerical prefix you dial before a phone number when calling from one country to another. These codes are assigned by the International Telecommunication Union (ITU) under the E.164 standard. For example, +44 is the code for the United Kingdom, and +86 is for China. The "+" symbol represents the international call prefix, which varies by country (e.g., 00 in most of Europe, 011 in the US).
How do I use this reverse lookup tool?
Simply type a dialling code into the search box above. You can enter it in any common format — with a plus sign (+44), without it (44), or with the international prefix (0044). The tool will instantly show you all matching countries. You can also browse the complete list below, filter by continent, or click on any of the popular code chips for quick access.
Why do some countries share the same dialling code?
Some dialling codes are shared under the North American Numbering Plan (NANP). The most notable is +1, which covers the United States, Canada, and many Caribbean nations. Similarly, +7 is shared between Russia and Kazakhstan. In these cases, additional area codes or regional prefixes are used to distinguish between different countries and regions within the shared code zone.
What's the difference between a dialling code and an ISO country code?
Dialling codes (like +44) are used exclusively for telephone communications and are assigned by the ITU. ISO country codes (like GB or UK for the United Kingdom) are two- or three-letter abbreviations defined by the International Organization for Standardization (ISO 3166) for general purposes including internet domains, shipping, and data processing. They serve different purposes and are managed by different organizations.
How many international dialling codes exist?
There are approximately 240 assigned country calling codes covering all UN member states, dependent territories, and some special regions. Codes range from single-digit codes like +1 (US/Canada) and +7 (Russia/Kazakhstan) to four-digit codes for smaller territories. New codes are rarely assigned, as the current system accommodates all recognized countries and territories worldwide.
How do I dial an international number correctly?
To dial internationally: first dial your country's international access code (e.g., 00 from most European countries, 011 from the US, 00 from the UK), then the destination country's dialling code, then the local area code (without any leading zero), and finally the subscriber number. On mobile phones, you can replace the international access code with the "+" symbol (hold the 0 key). For example: +44 20 1234 5678 for a London number.
Are dialling codes ever changed or reassigned?
Yes, although it's rare. Dialling codes can change when countries split (like the former Yugoslavia or Soviet Union), merge, or gain independence. For example, South Sudan received the code +211 after gaining independence in 2011. Kosovo uses +383. The ITU manages these changes carefully to minimize disruption to global telecommunications.

Data sourced from ITU E.164 standard. For informational purposes only. Always verify the correct code with your telecom provider before making international calls.

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