Telephone country code +86 is the People's Republic of China.
Area code +86 571 (or 0571 within China) is Hangzhou in Zhejiang Province.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The telephone country code +86 is for China, and the area code 29 is specifically for Xi'an, the capital of Shaanxi Province. This means that a phone number starting with +86 29 is a landline in Xi'an, a city known for its historical significance and the Terracotta Army.
The country code and area code of Changzhou- JS, China is 86, (0)519.
The country code and area code of Anyang- HEN, China is 86, (0)372.
The country code and area code of JiAn- JX, China is 86, (0)796.
The country code and area code of Anshun- GZ, China is 86, (0)853.
The country code and area code of Foshan- GD, China is 86, (0)757.
The country code and area code of Akesu- XJ, China is 86, (0)997.
The country code and area code of Baoding- HEB, China is 86, (0)312.
The country code and area code of Changde- HN, China is 86, (0)736.
The country code and area code of Alashanzuoqi- NM, China is 86, (0)483.
The country code and area code of Dalian- LN, China is 86, (0)411.
The country code and area code of Ezhou- HB, China is 86, (0)711.