─────── § 04. NPA RECORD · 940 · FOLIO 0742 OF 0801 ──────────────
940
United States NPA Record
Area code for the Wichita Falls and Denton areas in Texas, created in 1997 as a split from 817.
Area code for the Wichita Falls and Denton areas in Texas, created in 1997 as a split from 817. It covers numerous counties in north Texas and transitioned to mandatory ten-digit dialing in 2021 due to the 988 National Suicide Prevention Lifeline designation.
IN SERVICEFirst record · 1997
§ 04.05Event Summary
split · 2mandatory dialing · 1permissive dialing · 1
§ 04.06
Documentary Record · 4 events
CHRONOLOGICAL ORDER
1997-07-07
split
NPA 940 split from 817
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1997-07-25
split
NPA 940 split from 817
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2021-04-24
permissive dialing
Permissive 10-digit dialing begins in NPA 940
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2021-10-24
mandatory dialing
Mandatory 10-digit dialing implemented in NPA 940
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