Area Code 831 – Yibin, Sichuan
The phone area code for Yibin, Sichuan is 831 (international format +86831). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 831
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Yibin, Sichuan
Geographic Overview
The +86 831 area code is a geographic National Destination Code (NDC) assigned to Yibin, a prefecture-level city in the southern part of Sichuan Province, China. Yibin serves as a major transportation hub and economic center at the confluence of the Min and Yangtze rivers. The area code covers the urban districts of Cuiping, Nanxi, and Xuzhou, as well as the surrounding counties and towns under Yibin's administrative jurisdiction, including Jiang'an, Changning, Gao, Gong, Junlian, Xingwen, Pingshan, and the county-level city of Yibin (now integrated into the urban area).
Dialing Formats
For domestic callers within China, the local dialing format is simply the 8-digit subscriber number, as Yibin uses an 8-digit local number. When calling from outside the local area but within China, you must dial the trunk prefix 0 followed by the area code and the subscriber number: 0 831 XXXX XXXX. For international callers, the format is +86 831 XXXX XXXX (or 0086 831 XXXX XXXX from many countries).
Overlay and Numbering
Currently, Yibin does not have an overlay code; 831 is the sole area code for the region. The subscriber numbers are 8 digits long, with the first digit typically ranging from 2 to 9, depending on the specific exchange or service provider. As part of China's national numbering plan, geographic numbers are managed by the Ministry of Industry and Information Technology (MIIT) and are allocated to China Telecom, China Unicom, and China Mobile for fixed-line services.
Caller Instructions
- Local callers within Yibin can dial the 8-digit number directly without the area code.
- Domestic long-distance callers from other cities in China must dial 0-831-XXXX XXXX.
- International callers should dial their country's exit code, then 86, then 831, and then the 8-digit subscriber number. For example, from the US/Canada: 011 86 831 XXXX XXXX; from the UK: 00 86 831 XXXX XXXX.
When dialing from a mobile phone in China, it is common practice to include the area code even when calling locally, as mobile networks may require the full national number. However, for fixed-line calls within the same city, omitting the area code is acceptable.
Practical Example
Suppose you need to reach a business in Yibin with the local number 2345 6789. If you are calling from abroad, you would dial +86 831 2345 6789. If you are in Beijing, you would dial 0831 2345 6789. If you are already in Yibin, you could simply dial 2345 6789.