─────── § 04. NPA RECORD · 320 · FOLIO 0122 OF 0801 ──────────────
320
United States NPA Record
Area code created in 1996 covering central Minnesota, bordering 507 to the west.
Area code created in 1996 covering central Minnesota, bordering 507 to the west.
IN SERVICEFirst record · 1996
§ 04.05Event Summary
split · 3mandatory dialing · 1
§ 04.06
Documentary Record · 4 events
CHRONOLOGICAL ORDER
1996-03-17
split
NPA 320 split from 612
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1996-03-17
split
Exchanges moved from 612/320 to 507
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1996-09-15
mandatory dialing
Mandatory dialing for 320 destinations
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1998-01-01
split
Split of area code 612 to create 320 in 1998
Area code 320 was created in 1998 by splitting the northwestern part of area code 612 to mitigate continuing exhaustion of numbering resources.
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