─────── § 04. NPA RECORD · 840 · FOLIO 0642 OF 0801 ──────────────
840
United States NPA Record
Overlay area code for the 909 numbering plan area in California, introduced in 2021 to provide additional numbering resources.
Overlay area code for the 909 numbering plan area in California, introduced in 2021 to provide additional numbering resources.
IN SERVICEFirst record · 2019
§ 04.05Event Summary
permissive dialing · 2relief planned · 2mandatory dialing · 1
§ 04.06
Documentary Record · 7 events
CHRONOLOGICAL ORDER
2019-06-13
relief planned
Overlay of 909 with 840 approved
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2019-07-23
NPA 840 overlay on 909 announced
NPA 840 to Overlay 909 (California)
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2019-07-23
relief planned
Overlay relief approved for 909 with 840
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2020-07-01
permissive dialing
Permissive dialing period for 840 overlay
A permissive dialing period was implemented from July 2020 to January 2021 in the 909 numbering plan area to prepare for the overlay of area code 840.
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2020-07-25
permissive dialing
Permissive 1+10-digit dialing for 909/840 overlay complex
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2021-01-23
mandatory dialing
Mandatory 1+10-digit dialing for 909/840 overlay complex
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2021-02-23
Overlay of 909 with 840
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