─────── § 04. NPA RECORD · 608 · FOLIO 0410 OF 0801 ──────────────
608
United States NPA Record
Area code for much of southwestern Wisconsin including Madison, created in 1955 from a border rearrangement of 414 and 715.
Area code for much of southwestern Wisconsin including Madison, created in 1955 from a border rearrangement of 414 and 715. It was the original code for the region and transitioned to mandatory dialing in 1960.
IN SERVICEFirst record · 1955
§ 04.05Event Summary
mandatory dialing · 3relief planned · 3boundary change · 1introduced · 1planning notice · 1split · 1
§ 04.06
Documentary Record · 14 events
CHRONOLOGICAL ORDER
1955-01-01
boundary change
Area code 608 assigned from border rearrangement of 414 and 715
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1955-01-01
split
NPA 608 created from 414 and 715
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1955-01-01
introduced
NPA 608 assigned to southwestern Wisconsin
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1960-01-01
mandatory dialing
Mandatory area code dialing for intrastate calls in 608
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1960-07-23
mandatory dialing
Mandatory dialing of area code 608 for intrastate calls
Dialing area code 608 became mandatory for intrastate calling in Wisconsin in 1960 during the implementation of Direct Distance Dialing.
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2021-01-08
planning notice
Transition to 10-digit dialing planned for area code 608
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2021-10-24
mandatory dialing
Ten-digit dialing becomes mandatory in area code 608
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2022-03-01
relief planned
Relief planning for area code 608 exhaustion
Projections in March 2022 forecasted the need for relief in area code 608 by late 2023 due to rapid growth and exhaustion of central office prefixes.
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2022-09-15
Overlay of area code 353 over 608
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2022-09-16
relief planned
Approval of 353 overlay for area code 608
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2022-11-09
NPA 353 overlay on 608 announced
NPA 353 to Overlay NPA 608 (Wisconsin)
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2022-11-09
NPA 353 overlay on 608 announced
NPA 353 to Overlay NPA 608 (Wisconsin)
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2022-11-09
relief planned
Overlay complex announced for area codes 608 and 353
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2023-09-15
Area code 353 overlay activated
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