573-977 phone numbers

Numbers 573-977-0000 to 573-977-9999 are assigned to Level 3 Communications, LLC in Big Spring, MO. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 573-977-0xxx, 573-977-1xxx, 573-977-3xxx, 573-977-4xxx, 573-977-5xxx, 573-977-6xxx, 573-977-8xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 573-977