Area code 564
External links
Table:
Washington area codes: 206, 253, 360, 425, 509, 564

North: 236/778, 250, 604

West: Pacific Ocean, 250	Area code 564 (overlays 360; will also overlay 206, 253, and 425 when necessary)	East: 509

South: 503/971

British Columbia area codes: 236/778, 250, 604

Oregon area codes: 458/541, 503/971

Studying the table information on 'Area code 564', section 'External links', compose one sentence describing only the highlighted cells and format it within the following JSON object {"answer": "YOUR ANSWER"}.