An ISD (International Subscriber Dialing) code, also called a country calling code, is a numeric prefix used to dial a telephone number in another country, such as +91 for India or +1 for the United States and Canada.

How do I call an international number?

Dial the exit code of your own country (often 00 or +), followed by the destination country's ISD code, then the local phone number without the leading zero.

What is the difference between an ISD code and an ISO code?

An ISD code is a numeric dialing prefix like +44, while an ISO code is a two-letter country identifier like GB. Both identify a country but serve different purposes.

ISD Code Finder 2026 – Country Codes, STD & Dial Codes for 200+ Countries

🌍 200+ countries · STD codes for South Asia

International ISD Code Finder

Search any country's ISD code, or a city's STD/area code across India, Pakistan, Sri Lanka, Bangladesh, Nepal, Myanmar, Bhutan and Afghanistan — instantly, for free.

204 countries · 952 cities

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What is an ISD code?

An ISD (International Subscriber Dialing) code — also known as a country calling code or dial code — is the numeric prefix you dial before a phone number to reach someone in another country. For example, to call a mobile number in India from abroad, you would dial +91 followed by the ten-digit number.

How to dial an international number

Dial your country's exit code (usually 00 or +), then the destination country's ISD code, then the STD/area code of the city (dropping its leading zero), then the local number. For example, calling a landline in Ahmedabad from abroad: +91 79 XXXX XXXX.

Is this ISD code list free to use?

Yes, this tool is completely free with no sign-up required.

How can I see all STD codes at once instead of searching one by one?

Click "View complete list" above the search box. It opens every city grouped by country — expand any country to see its full STD code list in one screen, without typing anything.

Does this include STD / area codes for cities?

Yes — India has the deepest coverage (570+ towns and district headquarters, including places like Lunawada, Modasa, Dahod, Palanpur and Patan). Bangladesh (all 64 districts), Nepal (all districts), Afghanistan (all 34 provinces), Bhutan (all 20 dzongkhags) and Sri Lanka (all 25 districts) are fully covered. Pakistan and Myanmar cover all major cities and regions. Search any city or town name, or use "View complete list" above the search box to browse everything at once.

What is the STD code of Ahmedabad?

Ahmedabad's STD code is 079, and India's ISD code is +91. So a full international dial to an Ahmedabad landline looks like +91 79 XXXX XXXX.

Does the Maldives have STD/area codes?

No. The Maldives uses a flat national numbering plan with no regional area codes — every number nationwide is dialed the same way after the ISD code +960.

The Information World

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