─────── § 04. NPA RECORD · 458 · FOLIO 0260 OF 0801 ──────────────
458
United States NPA Record
Overlay area code for the 541 region in Oregon, introduced in 2010 to address number exhaustion.
Overlay area code for the 541 region in Oregon, introduced in 2010 to address number exhaustion.
IN SERVICEFirst record · 2008
§ 04.05Event Summary
activated · 1mandatory dialing · 1permissive dialing · 1
§ 04.06
Documentary Record · 5 events
CHRONOLOGICAL ORDER
2008-11-19
NPA 458 overlay on 541 announced
NPA 458 to Overlay NPA 541 (Oregon)
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2009-07-01
permissive dialing
Permissive 10-digit dialing begins in 541/458 overlay area
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2010-01-01
mandatory dialing
Mandatory 10-digit dialing in 541/458 overlay area
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2010-02-10
NPA 458 overlays 541
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2011-08-01
activated
First exchange issued in 458
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