What is what area code is 971?

Area code 971 serves the state of https://www.wikiwhat.page/kavramlar/Oregon. It's an overlay area code, meaning it doesn't cover a specific geographic area by itself, but instead is used in regions that already have another area code. Specifically, it overlays area code https://www.wikiwhat.page/kavramlar/503%20area%20code. This means that in the same geographic locations where 503 is used, 971 can also be assigned. It mainly covers the https://www.wikiwhat.page/kavramlar/Portland%20metropolitan%20area and the https://www.wikiwhat.page/kavramlar/Willamette%20Valley in Oregon. The overlay was implemented to relieve number exhaustion in the 503 area code. Therefore, when making a call in this area, you must dial the full ten-digit phone number (area code + seven-digit number).