How to extract the domain of the definition of the interpolating function? [duplicate]

When calling the interpolated function without specifying the value of the argument, Mathematica displays its domain of the interpolation. How to extract it?

• If if is your interpolating function, then do if["Domain"]. – Carl Woll Jan 13 '20 at 22:42
• To those voting to close because it is a simple mistake easily found in the documentation, where do you find it? InterpolatingFunction – Jason B. Jan 13 '20 at 23:13
• The question is answered here. – Michael E2 Jan 14 '20 at 1:27