Area Code 557 – Suzhou, Anhui
The phone area code for Suzhou, Anhui is 557 (international format +86557). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 557
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Suzhou, Anhui
Overview of Area Code +86 557
Area code 557 is a geographic National Destination Code (NDC) assigned to Suzhou, a prefecture-level city in the northern part of Anhui Province, China. It is part of the country's closed telephone numbering plan, where the full national number consists of the country code (+86), the area code (557), and a 7-digit subscriber number, totaling 12 digits in international format.
Geographic Coverage and Administration
Suzhou, Anhui (not to be confused with Suzhou in Jiangsu Province) is a significant city located in the Huang-Huai Plain, bordering Jiangsu, Shandong, and Henan provinces. The area code 557 serves the entire prefecture, including the urban districts of Yongqiao and the counties of Dangshan, Xiao, Lingbi, and Si. As an administrative center, Suzhou is known for its agricultural output, coal mining, and emerging logistics and manufacturing sectors. The code is managed by the Ministry of Industry and Information Technology (MIIT) and allocated to China Telecom and China Unicom for fixed-line services.
Dialing Formats
For local callers within Suzhou, the area code is omitted, and only the 7-digit subscriber number is dialed. For domestic long-distance calls from other parts of China, callers must dial the trunk prefix 0 followed by the area code and subscriber number: 0 557 XXXX XXX. For international callers, the format is +86 557 XXXX XXX (or 0086 557 XXXX XXX from many countries). It is important to note that the leading '0' is not included when dialing from abroad.
Overlay and Numbering Considerations
Currently, there is no overlay code for Suzhou, Anhui; 557 is the sole area code for the region. However, due to the increasing demand for telecommunication services, the MIIT has implemented number pooling and reallocation strategies to ensure sufficient numbering resources. Subscriber numbers are typically 7 digits, but some special services or VoIP lines may have different lengths. When dialing from a mobile phone within China, it is standard practice to include the area code even for local calls, as mobile numbers are not geographically tied and require full national numbering.
Caller Instructions
For local callers: dial the 7-digit number directly. For domestic callers outside Suzhou: dial 0557 followed by the subscriber number. For international callers: dial your country's exit code, then 86, then 557, and the subscriber number. Ensure you drop the trunk prefix '0' when calling from abroad. Always verify the subscriber number length, as some businesses may use 8-digit numbers for special services.