970-399 phone numbers

Numbers 970-399-0000 to 970-399-9999 are assigned to Fasttrack Communications, Inc. in Delta, CO. 7 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 970-399-6xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 970-399