← Area code 442
442-287 phone numbers
Numbers 442-287-0000 to 442-287-9999 are assigned to Level 3 Telecom of California, LP (rate centre OCSD CRLS, CA, NANPA abbreviation). 9 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.