← Area code 971
971-335 phone numbers
Numbers 971-335-0000 to 971-335-9999 are assigned to T-Mobile USA, Inc. (rate centre CLACKAMAS, OR, NANPA abbreviation). 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.