Area Code 817 – Nanchong, Sichuan
The phone area code for Nanchong, Sichuan is 817 (international format +86817). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 817
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Nanchong, Sichuan
Geographic Overview
Area code +86 817 is the National Destination Code (NDC) assigned to Nanchong, a prefecture-level city in the northeastern part of Sichuan Province, China. This geographic code covers the urban districts of Shunqing, Gaoping, and Jialing, as well as the surrounding counties and county-level cities under Nanchong's administrative jurisdiction, including Langzhong, Nanbu, Xichong, Yingshan, and Peng'an.
Dialing Formats
When calling a fixed-line number in Nanchong from within China, the trunk prefix 0 is used before the area code, followed by the local subscriber number. For example, a local number might be dialed as 0817-XXXXXXX (typically 7 or 8 digits). From outside China, callers must use the international access prefix (e.g., 00 or +), the country code 86, the area code 817 (without the leading 0), and then the subscriber number: +86 817 XXXXXXX.
It is important to note that China's numbering plan uses a closed dialing format for fixed-line calls. Even for local calls within Nanchong, the full number including the area code is often required, especially for calls from mobile phones or other regions. This practice ensures proper routing and avoids ambiguity with other cities that may share similar local number patterns.
Administrative and Regulatory Context
Nanchong's area code is part of the national numbering plan administered by the Ministry of Industry and Information Technology (MIIT) under ITU-T E.164 recommendations. The code is classified as geographic, meaning it is tied to a specific physical location and typically used for fixed-line (PSTN) services. However, with the convergence of fixed and mobile networks, some Voice over IP (VoIP) services may also be assigned numbers with this code, but they are still associated with the Nanchong region for routing and emergency services purposes.
There are currently no overlay codes in Nanchong; the 817 code is the sole area code for the region. This simplifies dialing and number portability considerations. For international callers, it is essential to replace the leading zero with the country code and international access prefix. For example, a call to a Nanchong landline from the United States would be dialed as 011 86 817 XXXXXXX.
Understanding the correct format is crucial for businesses and individuals maintaining contact with Nanchong, as misdialing can lead to failed connections or unintended charges. Always verify the complete number with the recipient to ensure accuracy.