← Area code 607
607-310 phone numbers
Numbers 607-310-0000 to 607-310-9999 are assigned to Level 3 Communications, LLC in Cortland, NY. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 607-310-2xxx, 607-310-3xxx, 607-310-4xxx, 607-310-5xxx, 607-310-7xxx, 607-310-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.