Seems like a bad strategy if people are conditioned to distrust it. In rural areas of the US, ALL of the phone numbers (at least until somewhat recently ) woul

Seems like a bad strategy if people are conditioned to distrust it. In rural areas of the US, ALL of the phone numbers (at least until somewhat recently ) would share the same first 6 digits. Even now there are very few possible exchange prefixes in my area, though a lot of people's mobile phones are tied to another exchange prefix (phones not purchased locally/owner moved to the area and kept their old number)