573-688 phone numbers

Numbers 573-688-0000 to 573-688-9999 are assigned to Southwestern Bell in Lilbourn, MO. 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 573-688-3xxx, 573-688-9xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 573-688