Cognomen ขอบเขต (Scope 
, ขอบเขต 
, Bounds ) , in the world, is a common surname. The last name ขอบเขต is habitual in New Zealand, where it is quite a common surname, Trinidad and Tobago, where it is quite a rare surname, and the United States. In absolute terms, it most frequently occurs in the United States, New Zealand, and the United Kingdom. Very seldom, ขอบเขต is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bounds, Scope | Australia, Canada, New Zealand, United States, United Kingdom |
| ขอบเขต | Thailand |
| Bounde | Nigeria, France |
Boundieing, Boundieng, Boundy, and Khopkhet