I want to write a regexp code for the Saudi Arabia phone number so I can test it on my app, the restriction is that

1. must start with 9665xxxxxxxx
2. length after 966 must be 9 digits.
3. it should not have 96605xxxxxxxx.

examples:

1. 966551234567
2. 966506478971

CodePudding user response：

For a string that starts with 9665 and exactly 8 digits behind it.

^[ ]9665[0-9]{8}$