202-456-1111. The WH Comment Lines message:

“Thank you for calling the White House. Unfortunately, we cannot answer your call today because congressional Democrats are holding government funding—including funding for our troops and other national security priorities—hostage to an unrelated immigration debate. Due to this obstruction, the government is shut down. In the meantime, you can leave a comment for the president at www.whitehouse.gov/contact. We look forward to taking your calls as soon as the government reopens.”

Yes. If you can get through at all that’s what it says.