North American Numbers Source-cited · ownership disclosed
Area code
470
In service
United States · since 2010

Atlanta metro (overlay)

An overlay of the Atlanta metropolitan region (404/770/678), assigned in 2001 as relief for the exhausted 678 code but not activated for customer numbers until 2010. As of the 2020s it is the primary code with prefixes still available for new assignment.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Atlanta metro (overlay)
Type
geographic
Status
in service
In service since
2010
Projected exhaust
2039 Q1

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 470 is

Entire Atlanta metropolitan region — the combined 404 (inside I-285) and 770 (outside I-285) numbering plan area..

Communities served wholly or partly by 470:

AtlantaMariettaRoswellAlpharettaLawrencevilleDuluth

Same footprint as 404/770/678; no distinct geography of its own.

B · Relationships

How it relates to other codes

The codes 470 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 · 2001 678 Atlanta metro (overlay) Added as relief when 678 was exhausted; co-overlays the same area.
Overlay · 2001 404 Atlanta Overlays 404 (urban core).
Overlay · 2001 770 Atlanta suburbs Overlays 770 (suburban ring).
Overlay · 2022 943 Atlanta metro (overlay) Co-overlay of same region.
What's changing. Overlay. Part of the five-code Atlanta metro overlay complex (404/470/678/770/943). As of the 2020s, 470 has prefixes still available for new assignment.
C · History

How 470 got here

2001-09-02
Assigned as an overlay for the exhausted 678 code, over 404 and 770.
Source: Wikipedia
2010
Numbers activated for customer use after 678 was depleted.
Source: Wikipedia
2022-03-15
Joined by area code 943 as a further overlay of the same region.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
800
Prefixes available
0
Thousands-blocks assigned
7,839

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

Compare 470 with another code →
Sources
Wikipedia ↗
Area code 470
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.