─────── § 04. NPA RECORD · 771 · FOLIO 0573 OF 0801 ──────────────
771
United States NPA Record
Area code 771 is an overlay code added in April 2021 to the District of Columbia numbering plan area to mitigate number exhaustion in area code 202.
Area code 771 is an overlay code added in April 2021 to the District of Columbia numbering plan area to mitigate number exhaustion in area code 202.
IN SERVICEFirst record · 2020
§ 04.05Event Summary
mandatory dialing · 3relief planned · 3activated · 2permissive dialing · 1
§ 04.06
Documentary Record · 12 events
CHRONOLOGICAL ORDER
2020-09-16
relief planned
First Direct Distance Dialing call using NPA 201
▸
2020-10-01
relief planned
Announcement of area code 771 overlay for 202
▸
2020-10-22
relief planned
NANPA announces 771 overlay for Washington, D.C.
▸
2021-04-01
NPA 771 added as an overlay to NPA 202
Area code 771 was added to the Washington, D.C. numbering plan area in April 2021 to mitigate impending number shortages.
▸
2021-04-10
permissive dialing
Start of permissive ten-digit dialing for 202/771 overlay
▸
2021-10-09
mandatory dialing
NPA 908 split from 201
▸
2021-10-09
mandatory dialing
Mandatory ten-digit dialing for 202/771 overlay complex
▸
2021-10-10
mandatory dialing
Mandatory ten-digit dialing begins for 202/771 overlay
Mandatory ten-digit dialing for all calls within the District of Columbia began on October 10, 2021, completing the transition to the 771 overlay complex.
▸
2021-11-08
activated
First central office code 777 assigned in area code 771
▸
2021-11-08
Area code 771 activated as all-services overlay on 202 in Washington, D.C.
▸
2021-11-09
NPA 973 split from 201
▸
2021-11-09
activated
Central office code 888 assigned in area code 771
Central office code 888 was assigned in area code 771 on November 9, 2021, continuing the activation of the new overlay area code in the District of Columbia.
▸