Washington, D.C. (overlay)

Area code 771 is an overlay of area code 202, covering the same District of Columbia geography. It was added in 2021 to relieve number exhaustion in 202.

The essentials Numbering data · NumberResearch · as of 2026-09-18

Place

Type

geographic

Status

in service

In service since

2021

Projected exhaust

2088 Q3

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 771 is

The District of Columbia (same geography as 202)..

Communities served wholly or partly by 771:

Washington

B · Relationships

How it relates to other codes

The codes 771 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Overlay · 2021 202 Washington, D.C. 771 was added as an overlay on top of the original 202.

What's changing. Active overlay of 202. Newer code (2021) — re-check NANPA for latest assignment status.

C · History

How 771 got here

2021-04

Added to the numbering plan area to create an overlay complex with 202.

Source: Wikipedia

2021-11-08

First 771 central office codes assigned.

Source: Wikipedia

D · Capacity

How full it is

Prefixes assigned

Prefixes available

716

Thousands-blocks assigned

699

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 771 with another code →

Sources

Wikipedia ↗

Area codes 202 and 771

NumberResearch.org ↗

Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.