Which city does the area code 3420 belong to?

The area code 3420 is assigned to Koforidua, the capital of the Eastern Region of Ghana.

How do I dial a Koforidua number from abroad?

Dial the international access code (e.g., 00 or +), then Ghana's country code 233, followed by the area code 3420 and the local subscriber number. For example: +233 3420 123 456.

Is 3420 a mobile or fixed-line prefix?

It is a geographic fixed-line prefix. It is used for landline services in the Koforidua area, not for mobile numbers.

Do I need to dial the trunk prefix 0 when calling Koforidua from within Ghana?

Yes, when calling from within Ghana, you must dial 0 before the area code. For example: 03420 123 456.

Can I port my fixed-line number from Koforidua to another location?

Fixed-line number portability is not generally available in Ghana. The geographic code is tied to the physical exchange location, so moving to another area would require a new number.

Area Code 3420 (Ghana) - Prefix Details & Exchanges

Overview of +233 3420

The country calling code +233 is assigned to Ghana under the ITU-T E.164 international numbering plan. Within the national numbering plan, the prefix 3420 is a geographic area code serving the city of Koforidua, the capital of the Eastern Region. This code is part of the national destination code (NDC) structure for fixed-line PSTN services.

Geographic Coverage and Administration

The 3420 area code covers Koforidua and its immediate surroundings, including the New Juaben South and New Juaben North municipal districts. As a geographic code, it is tied to a specific administrative jurisdiction, and calls to this code are routed to the local exchange serving that area. The code is allocated to fixed-line operators, including Ghana Telecom (now Vodafone Ghana) and other licensed fixed network operators.

Dialing Formats

For international callers, the full number must be dialed in the format: +233 3420 XXX XXX. For example, a local number might be +233 3420 123 456. When dialing from within Ghana, callers must use the trunk prefix 0 followed by the area code and subscriber number: 0 3420 XXX XXX. The subscriber number length is typically 7 digits after the area code, making the total national significant number (NSN) 9 digits (including the leading 0).

Overlay and Numbering Considerations

As of the latest updates, there is no overlay code for Koforidua; the 3420 code remains the sole geographic code for the area. However, the National Communications Authority (NCA) of Ghana has implemented mobile number portability, but fixed-line numbers are generally not portable. Callers should be aware that some businesses may use VoIP or other non-geographic services that display a different caller ID, but the geographic code remains associated with the physical location of the exchange.

Caller Instructions

Local callers (within Ghana): Dial 03420 XXX XXX (including the trunk prefix).
International callers: Dial +233 3420 XXX XXX (omit the leading 0).
Emergency and special services: Always use the national emergency numbers (e.g., 112 or 191) rather than geographic codes.

Cost and Tariffs

Calls to +233 3420 are typically charged as standard fixed-line rates, which are lower than mobile rates. International callers should check with their service provider for applicable rates. Within Ghana, calls from mobile networks to fixed lines may incur higher charges, but on-net fixed-to-fixed calls are usually cheaper.

Area Code 3420 – Koforidua

📍 Geographic Location of Koforidua