Area Code 255 – Quang Ngai province

Overview of Area Code +84 255

Area code 255 is the National Destination Code (NDC) assigned to the province of Quang Ngai in central Vietnam. Under the ITU-T E.164 international numbering plan, the full international dialing format for a fixed-line subscriber in Quang Ngai is +84 255 X XXX XXX, where the subsequent digits represent the local subscriber number. This code is part of Vietnam's geographic numbering scheme, administered by the Ministry of Information and Communications (MIC).

Geographic Coverage and Administrative Jurisdiction

Quang Ngai province is located in the South Central Coast region, bordered by Quang Nam to the north, Kon Tum to the west, Gia Lai to the southwest, Binh Dinh to the south, and the East Sea to the east. The province's capital and largest city is Quang Ngai City, which, along with other urban districts such as Binh Son, Son Tinh, Tu Nghia, and Nghia Hanh, is served by this area code. The code covers all fixed-line telephone exchanges within the province, including both urban and rural districts.

Dialing Formats and Caller Instructions

For callers within Vietnam, the national trunk prefix 0 is used before the area code. Thus, a local call from another province to Quang Ngai would be dialed as 0255 X XXX XXX. Within the same province, local calls may be made using the subscriber number alone, depending on the specific local dialing plan, but it is always safe to use the full national format. For international callers, the country code +84 replaces the trunk prefix, so the international format becomes +84 255 X XXX XXX. For example, a landline in Quang Ngai City with subscriber number 3 850 123 would be dialed as +84 255 3 850 123 from abroad, and as 0255 3 850 123 from other Vietnamese provinces.

Overlay and Numbering Considerations

As of the latest MIC regulations, there is no overlay code in Quang Ngai; the 255 code is exclusively used for geographic fixed-line services. However, due to the increasing demand for telecommunication services, the province may see future numbering changes. Subscribers should always verify the current dialing procedures with their service provider. Mobile numbers in Vietnam are non-geographic and begin with different prefixes (e.g., 09x, 03x, 05x, 07x, 08x), so they are not affected by this area code.

Practical Usage and SEO Relevance

For businesses operating in Quang Ngai, having a local geographic number with the 255 area code establishes a trusted local presence. When publishing contact details, always include the international format for global accessibility. For search engine optimization, it is beneficial to mention the area code in local business listings and website contact pages to improve local search visibility. This area code is also essential for emergency services and government hotlines within the province, though those often use shortcodes.