The prefix +237 is the official international country calling code for the Republic of Cameroon, a central African nation known as “Africa in miniature” due to its diverse geography and culture.
If you have a phone number starting with +237 or need to contact someone in the region, you should be aware that Cameroon operates on a 9-digit national numbering plan. This guide will detail the structure of Cameroonian phone numbers, list the main cities, and provide correct dialing instructions from the U.S. and Canada.
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The +237 Country Code: Cameroon
The code +237 is the unique identifier for Cameroon in the global telecommunications system.
| Feature | Detail |
| Country | Cameroon (Central Africa) |
| Capital City | Yaoundé |
| Time Zone | West Africa Time (WAT): UTC+1 |
| Number Format | 9 digits total (after +237) |
Time Zone Note: WAT (UTC+1)
Cameroon observes West Africa Time (WAT), which is UTC+1 year-round. It does not observe Daylight Saving Time (DST).
- Calling from the U.S. East Coast (EST/EDT): WAT is typically 6 hours ahead of U.S. Eastern Standard Time (EST) in the winter.
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Cameroon’s 9-Digit Dialing Plan
Cameroon transitioned to a closed 9-digit national numbering plan in 2014. This structure is essential to know, as the first digit immediately following +237 indicates whether the number is a fixed line or a mobile line.
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How to Call a Cameroonian Mobile Phone
Mobile numbers in Cameroon are 9 digits long and typically begin with the digit 6. The next two digits identify the specific mobile carrier (e.g., MTN, Orange, Nexttel).
- Dial the International Exit Code (011): (Or use the + symbol on a mobile phone).
- Dial the Country Code (237).
- Dial the 9-Digit Mobile Number (which begins with 6).
Mobile Format Example (U.S. to Cameroon Mobile):
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How to Call a Cameroonian Landline (Fixed Line)
Fixed-line numbers are also 9 digits long and typically begin with the digit 2.
- Dial the International Exit Code (011).
- Dial the Country Code (237).
- Dial the 9-Digit Landline Number (which begins with 2).
Landline Format Example (U.S. to Cameroon Landline):
Major Cities and Corresponding Prefixes
Since the fixed-line prefixes act as the area codes, you will see numbers associated with these cities start with a ‘2’ followed by regional digits:
- Yaoundé (Capital)
- Douala (Largest city and economic hub)
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Cost and Safety Considerations
Direct international calls to Cameroon can be very expensive.
- High Cost Warning: Without an international calling plan, carriers often charge high per-minute rates for calls to +237 It is strongly recommended to use VoIP services (like WhatsApp or Skype) or secure an international plan if you call frequently.
- Scam Warning: As with many international codes, the +237 prefix is sometimes used in “One Ring” scams. If you receive a call that hangs up after a single ring, do not call back. Doing so can connect you to a costly premium service.
Frequently Asked Questions (FAQ)
Is 237 a U.S. area code?
No. Area code 237 is not a designated geographic area code in the North American Numbering Plan (NANP). It is exclusively the international country code for Cameroon.
How many digits is a full phone number in Cameroon?
A full Cameroonian phone number, when dialed internationally, consists of 12 digits: the +237 country code followed by the 9-digit national number.
What is the emergency number in Cameroon?
The standard emergency number in Cameroon for immediate assistance (Police, Fire, and Ambulance) is 112.
