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← Area code 512

512-540 phone numbers

Numbers 512-540-0000 to 512-540-9999 are assigned to New Cingular Wireless PCS, LLC in Lampasas, TX. 7 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.

Reported numbers in 512-540