─────── § 04. NPA RECORD · 918 · FOLIO 0720 OF 0801 ──────────────
918
United States NPA Record
Area code for northeast Oklahoma including Tulsa, created in 1953 as a split from 405.
Area code for northeast Oklahoma including Tulsa, created in 1953 as a split from 405. It covers cities such as Bartlesville, Broken Arrow, Claremore, and Muskogee.
IN SERVICEFirst record · 1953
§ 04.05Event Summary
mandatory dialing · 1permissive dialing · 1relief planned · 1split · 1
§ 04.06
Documentary Record · 6 events
CHRONOLOGICAL ORDER
1953-01-01
split
NPA 918 split from 405 for northeastern Oklahoma
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2009-12-30
relief planned
Overlay of 539 announced for 918
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2010-03-01
NPA 539 overlay on 918 announced
NPA 539 to Overlay NPA 918 (Oklahoma)
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2010-08-07
permissive dialing
Permissive 10-digit dialing begins for 918/539
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2011-03-05
mandatory dialing
Mandatory ten-digit dialing in 918/539
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2011-04-01
Overlay of area code 539 over 918
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