Area Code 779 – Beihai, Guangxi

Overview

The +86 779 country and area code combination is the international dialing prefix for the city of Beihai, located in the Guangxi Zhuang Autonomous Region of the People's Republic of China. As a geographic number, 779 is designated as the National Destination Code (NDC) for landline telephone services within Beihai's administrative boundaries. This code is used exclusively for fixed-line (PSTN) connections, including residential, business, and government lines, and is not assigned to mobile services, which operate under separate non-geographic prefixes in China.

Geographic Coverage

Beihai is a prefecture-level city situated on the southern coast of Guangxi, bordering the Gulf of Tonkin. The area code 779 covers the entire prefecture, including the central urban districts of Haicheng and Yinhai, as well as the suburban and rural areas under Beihai's jurisdiction, such as Tieshangang District and the county-level city of Hepu. The code also serves the nearby Weizhou Island, a popular tourist destination administered by Beihai.

Dialing Formats

When calling a Beihai landline from within China, you must dial the trunk prefix 0 followed by the area code and the subscriber number. For example, a local Beihai number such as 1234567 would be dialed as 0779 1234567 from elsewhere in China. Internationally, callers should dial +86 779 1234567, omitting the leading zero of the trunk prefix. The total length of a Chinese landline number, including the area code, is typically 11 or 12 digits, with the local subscriber number consisting of 7 or 8 digits.

Caller Instructions

For local callers within Beihai, dialing the 7- or 8-digit subscriber number alone is sufficient for calls within the same area code. However, if you are calling from a mobile phone, you may need to include the area code even for local calls, depending on your carrier's settings. For international callers, always use the full international format: +86 779 [subscriber number]. Ensure you replace the plus sign with your country's international exit code (e.g., 011 from the US, 00 from most European countries) when dialing from a landline.

Technical Considerations

China's numbering plan follows ITU-T E.164 recommendations, and area codes are assigned hierarchically. The 779 code is part of the Guangxi provincial numbering plan, which also includes codes for other cities like Nanning (771) and Guilin (773). There are no overlay codes currently planned for Beihai, meaning that the 779 code is the sole geographic code for the region. Number portability for fixed lines is limited in China, so the area code generally reflects the physical location of the line.