─────── § 04. NPA RECORD · 858 · FOLIO 0660 OF 0801 ──────────────
858
United States NPA Record
Area code serving northwest San Diego County, California, created in 1999 as a split from 619.
Area code serving northwest San Diego County, California, created in 1999 as a split from 619. It overlays with 619 since 2019.
IN SERVICEFirst record · 1998
§ 04.05Event Summary
mandatory dialing · 4relief planned · 3other · 2permissive dialing · 2split · 1
§ 04.06
Documentary Record · 13 events
CHRONOLOGICAL ORDER
1998-06-04
relief planned
CPUC approves three-way split of 619
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1998-06-30
other
NANP-Phased three-way split of 619 (California) Numbering Plan Area (NPA) with 858 & 935 NPAs
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1999-06-12
split
NPA 858 split from 619
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1999-06-12
permissive dialing
Permissive dialing begins for 858 split
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1999-12-11
mandatory dialing
Mandatory dialing for 858 split
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2017-05-18
other
NPA 619 and 858 Boundary Elimination Overlay (California)
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2017-10-01
permissive dialing
Permissive 1+10 digit dialing for 619/858 overlay
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2018-04-01
mandatory dialing
Mandatory 1+10 digit dialing for 619/858 overlay
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2018-06-01
619 and 858 overlay complex implemented
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2018-06-01
relief planned
Overlay relief planned for 619 and 858
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2018-06-01
mandatory dialing
Mandatory ten-digit dialing implemented for 619
Ten-digit local dialing became mandatory in June 2018 for the overlay complex of area codes 619 and 858 in San Diego County.
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2018-06-01
mandatory dialing
Mandatory ten-digit dialing implemented for 858
Ten-digit local dialing became mandatory in June 2018 for the overlay complex of area codes 619 and 858 in San Diego County.
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2043-01-01
relief planned
Projected relief for San Diego area codes
According to projections, San Diego area codes 619 and 858 are not expected to require further relief until 2043.
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