← Area code 605
605-609 phone numbers
Numbers 605-609-0000 to 605-609-9999 are assigned to Level 3 Communications, LLC in Pierre, SD.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.
Numbers 605-609-0000 to 605-609-9999 are assigned to Level 3 Communications, LLC in Pierre, SD.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.