Area Code 857 – Bijie, Guizhou
The phone area code for Bijie, Guizhou is 857 (international format +86857). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 857
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Bijie, Guizhou
Overview of Area Code +86 857
Area code 857 is a geographic National Destination Code (NDC) assigned to Bijie Prefecture-level City in the western part of Guizhou Province, People's Republic of China. Under the ITU-T E.164 international numbering plan, the full international dialing format for fixed-line numbers in Bijie is +86 857 XXX XXXX, where +86 is the country calling code for China, 857 is the area code, and the subsequent 7 to 8 digits constitute the local subscriber number. Within China, callers dial 0857 XXX XXXX (including the trunk prefix 0) when calling from outside the Bijie local calling area.
Geographic Coverage and Administrative Jurisdiction
Bijie is located in the northwestern part of Guizhou Province, bordering Sichuan and Yunnan provinces. The area code 857 serves the entire prefecture-level city, which includes the central urban district (Qixingguan District) and the surrounding counties and county-level cities: Dafang County, Qianxi County, Jinsha County, Zhijin County, Nayong County, Weining Yi-Hui-Miao Autonomous County, Hezhang County, and the newly established (as of 2021) county-level city of Qixingguan. The administrative center is in Qixingguan District, where most government and business offices are located.
Dialing Formats and Caller Instructions
For local callers within the Bijie local calling area, the area code is typically omitted, and only the 7- or 8-digit subscriber number is dialed. However, due to the expansion of local numbering, all fixed-line numbers in Bijie now have 8 digits. When calling from a mobile phone or from outside the local area but still within China, you must dial 0857 followed by the 8-digit subscriber number. For international callers, dial your country's international access code (e.g., 011 from the US, 00 from most European countries), then 86, then 857, and finally the 8-digit local number. For example, to call a fixed line in Bijie with the number 1234 5678, an international caller would dial +86 857 1234 5678.
Overlays and Numbering Plan Considerations
Currently, there is no overlay area code for Bijie; 857 is the sole NDC for the region. However, as part of China's ongoing telecommunications development, the government has implemented number portability for mobile services, but fixed-line numbers generally remain tied to the geographic area. VoIP services may present a different caller ID, but when routing to a fixed line in Bijie, the network uses the geographic routing based on the 857 code. It is important to note that China's numbering plan is regulated by the Ministry of Industry and Information Technology (MIIT), and any future changes, such as the introduction of an overlay or the addition of digits, would be announced well in advance.