Area Code 232 – Quang Binh province

Geographic Overview

The area code 232 is the National Destination Code (NDC) assigned to the province of Quang Binh in central Vietnam. Geographically, Quang Binh is located in the North Central Coast region, bordered by Ha Tinh to the north, Quang Tri to the south, Laos to the west, and the East Sea to the east. The provincial capital is Dong Hoi, which serves as the primary economic and administrative hub. Other significant urban centers include Ba Don, Quang Ninh, and Tuyen Hoa. The province is renowned for the Phong Nha-Ke Bang National Park, a UNESCO World Heritage site, and the Son Doong cave, the largest cave in the world.

Dialing Formats

When calling a fixed-line number in Quang Binh from within Vietnam, subscribers must dial the trunk prefix 0, followed by the area code 232, and then the subscriber number. The local subscriber numbers in Quang Binh are typically 7 digits long, resulting in a total national significant number length of 10 digits (including the leading zero). For example, a local number such as 3856 789 would be dialed as 0232 3856 789 from any other province in Vietnam.

For international callers, the leading zero is omitted. Callers must use the Vietnam country code +84, followed by the area code 232 and the 7-digit subscriber number. Thus, the same number would be dialed as +84 232 3856 789 from abroad. It is important to note that the plus sign (+) represents the international access code used in the caller's country (e.g., 00 in most European countries, 011 in the United States).

Regulatory and Technical Notes

The 232 area code is classified as a geographic code under the Vietnamese national numbering plan, managed by the Vietnam Telecommunications Authority (VNTA) under the Ministry of Information and Communications. Geographic codes are tied to specific administrative regions, and the assignment of subscriber numbers within these codes is typically based on the physical location of the fixed-line connection. However, with the advent of number portability and VoIP services, some numbers may not strictly correspond to a physical location, but the area code remains indicative of the original geographic allocation.

Quang Binh is served by major Vietnamese telecom operators, including VNPT (Vinaphone), Viettel, and FPT Telecom, which provide PSTN and VoIP fixed-line services. The province has seen significant infrastructure development, with fiber-optic broadband widely available in urban areas and expanding into rural regions. When dialing from a mobile phone within Vietnam, the same trunk prefix (0) is used, and the call is routed as a national call, typically incurring standard domestic rates.

For businesses and individuals in Quang Binh, having a local geographic number enhances local presence and trust. International callers should be aware of time zone differences (Vietnam is UTC+7) and potential peak-hour surcharges. Always verify the current dialing procedures with your service provider, as international dialing formats may vary slightly by country.