← Area code 830
830-309 phone numbers
Numbers 830-309-0000 to 830-309-9999 are assigned to New Cingular Wireless PCS, LLC in Del Rio, TX. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 830-309-3xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.