Canadial Know Who Called
← Area code 856

856-420 phone numbers

Numbers 856-420-0000 to 856-420-9999 are assigned to Onvoy, LLC in Woodbury, NJ. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

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

Reported numbers in 856-420