Area code 319 was assigned to the eastern part, and stretched along the entire border with Wisconsin and Illinois. By the end of the 20th century, the available telephone number pool was depleting rapidly because of the increase in mobile devices, demand for telephone lines for computer equipment, FAX machines, and other services.
Area code 319 covered the eastern region and stretched across the borders with Wisconsin and Illinois. By the end of the century, the available phone numbers were dwindling because of the rapid increase in mobile devices, demand for telephone lines for computers, FAX machines, and other services.