Suzhou’s area code is 0512.
The telephone area codes of prefecture-level cities in Jiangsu, including Suzhou, are as follows:
1. Nanjing: 025.
2. Wuxi: 0510.
3. Zhenjiang: 0511.
4. Suzhou: 0512.
5. Nantong: 0513.
6. Yangzhou: 0514.
7. Yancheng: 0515.
8. Xuzhou: 0516.
9. Huai’an: 0517.
10. Lianyungang: 0518.