Number

Region

Area Code

Post Code

1

Zhengzhou

0371

450000

2

Anyang

0372

455100

3

Xinxiang

0373

453700

4

Xuchang

0374

461000

5

Pingdingshan

0375

467000

6

Xinyang

0376

464100

7

Nanyang

0377

473000

8

Kaifeng

0378

475100

9

Luoyang

0379

471000

10

Shangqiu

0370

476100