Area Code 408 – Taichung/Changhua

Overview of Taiwan Area Code 408

Area code 408 is a geographic National Destination Code (NDC) within the Taiwan telephone numbering plan, administered by the National Communications Commission (NCC) under the ITU-T E.164 international standard. It serves the central-western region of Taiwan, primarily covering Taichung City and Changhua County. This code is used for fixed-line (PSTN) services, including residential, business, and government lines. When dialing internationally, the full number format is +886 408 XXX XXX, where +886 is Taiwan's country calling code, 408 is the area code, and the subscriber number typically consists of 6 to 8 digits.

Geographic Coverage and Administrative Jurisdiction

The 408 area code encompasses the urban and suburban districts of Taichung, including the central business districts, as well as the neighboring Changhua County to the south. Taichung is Taiwan's second-largest metropolitan area, known for its industrial parks, cultural landmarks, and as a major transportation hub. Changhua County is renowned for its agricultural output and historical sites. The code is assigned to the local exchange areas within these administrative regions, and it is not portable outside this geographic boundary.

Dialing Formats and Caller Instructions

• Local calls (within the 408 area): Dial the subscriber number directly (e.g., 2XXX XXXX). No trunk prefix is required.
• Domestic long-distance calls (from other area codes in Taiwan): Dial the trunk prefix 0, then the area code 408, followed by the subscriber number (e.g., 0 408 2XXX XXXX).
• International calls from outside Taiwan: Dial your country's exit code (e.g., 011 from the US, 00 from most European countries), then Taiwan's country code 886, then the area code 408 without the leading '0', followed by the subscriber number (e.g., +886 408 2XXX XXXX).

For example, a local call to a Taichung number might be 04-2221 XXXX (when using the domestic format with the leading 0), but internationally it becomes +886 4 2221 XXXX. Note that the leading '0' is only used for domestic dialing and is omitted when dialing from abroad.

Overlay and Numbering Considerations

Currently, there is no overlay code for the 408 area; however, due to the high demand for telecommunication services in the Taichung-Changhua region, the NCC has implemented number pooling and strict number conservation measures. Subscribers within the 408 area may have numbers starting with 2, 3, or 4, depending on the exchange. For VoIP and mobile services, numbers are non-geographic and are not tied to this area code. Callers should be aware that while 408 is a geographic code, some businesses may use it for virtual numbers, but the routing remains fixed to the physical exchange.

For accurate billing and call routing, always verify the complete number with the recipient, especially when dialing from mobile networks, as some carriers may require the area code even for local calls. Taiwan's numbering plan is fully compliant with E.164, ensuring seamless international connectivity.