─────── § 04. NPA RECORD · 970 · FOLIO 0772 OF 0801 ──────────────
970
United States NPA Record
Area code for the western and northern parts of Colorado, created in 1995 as a split from 303.
Area code for the western and northern parts of Colorado, created in 1995 as a split from 303.
IN SERVICEFirst record · 1995
§ 04.05Event Summary
relief planned · 2split · 2mandatory dialing · 1permissive dialing · 1
§ 04.06
Documentary Record · 8 events
CHRONOLOGICAL ORDER
1995-04-02
split
Split of 303 to create 970
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1995-04-02
split
NPA 303 split to create 970
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2021-04-24
permissive dialing
Permissive 10-digit dialing begins in 970 for 988 implementation
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2021-10-24
mandatory dialing
Mandatory 10-digit dialing in 970 for 988 implementation
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2023-11-20
relief planned
Overlay of 748 approved for 970
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2023-12-18
relief planned
Overlay relief planned for area code 970 with new code 748
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2024-02-13
NPA 748 overlay on 970 announced
NPA 748 to Overlay NPA 970 (Colorado)
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2025-07-07
Activation of overlay area code 748 over 970
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