Area Code 222 – Bac Ninh province
The phone area code for Bac Ninh province is 222 (international format +84222). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Bac Ninh province
Geographic Overview
The +84 222 country/area code corresponds to the northern Vietnamese province of Bac Ninh, an administrative region that is part of the Red River Delta. This province is strategically located adjacent to the capital city, Hanoi, and forms part of the key economic corridor in northern Vietnam. The area code 222 is designated for fixed-line telephone services within Bac Ninh province, covering both urban districts such as Bac Ninh City, Tu Son, and Tu Ky, as well as rural districts and industrial zones. As a geographic code, it is tied to the PSTN infrastructure of the province and is used for landline numbers, including those of businesses, government offices, and residential subscribers.
Dialing Formats
When calling a fixed-line number in Bac Ninh from within Vietnam, the national trunk prefix 0 is used, followed by the area code 222 and the subscriber's 7-digit number. For example, a local number might be dialed as 0222 123 4567. From outside Vietnam, callers must use the international access prefix (typically 00 or +), followed by Vietnam's country code 84, then the area code without the leading zero, and the subscriber number: +84 222 123 4567.
Overlay and Numbering Considerations
Currently, there is no overlay code for Bac Ninh; the 222 code is exclusively assigned to the province. However, due to the province's rapid industrialization and proximity to Hanoi, the demand for fixed-line services has grown. In some cases, businesses may use VoIP or IP-based services that present a 222 number, but the underlying routing may be location-independent. For callers, it is important to note that while mobile numbers in Vietnam use different prefixes (e.g., 03x, 05x, 07x, 08x, 09x), the 222 code is strictly for fixed-line services.
Caller Instructions
For local callers within Bac Ninh, dialing the full national format (0222 + number) is always safe, even for on-net calls. For international callers, always replace the trunk prefix 0 with the +84 country code. Ensure you have the correct 7-digit subscriber number; if you are unsure, verify with the recipient or a directory service. Charges for calls to 222 numbers are typically standard fixed-line rates, which may be lower than mobile rates.