North American Numbers Source-cited · ownership disclosed
Area code
563
In service
United States · since 2001

Davenport / northeast Iowa

Serves east-central and northeast Iowa including the Iowa side of the Quad Cities and Dubuque. Created in 2001 by a geographic split from 319.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Davenport / northeast Iowa
Type
geographic
Status
in service
In service since
2001
Projected exhaust
2076 Q4

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 563 is

East-central and northeast Iowa, including most of the Iowa side of the Quad Cities (Scott, Dubuque, Clinton counties and surrounding area)..

Communities served wholly or partly by 563:

DavenportBettendorfDubuqueClintonMuscatineDecorahMaquoketa
B · Relationships

How it relates to other codes

The codes 563 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?

Split from · 2001 319 Cedar Rapids / east-central Iowa 563 split from 319 in 2001.
Related · 2001 641 Mason City / central-south Iowa Adjacent to the west.
What's changing. No overlay; created as a geographic split.
C · History

How 563 got here

2001-03-25
Established via geographic split from 319; a split was chosen over an overlay despite mobile-carrier preference for an overlay.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
411
Prefixes available
389
Thousands-blocks assigned
1,621

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

Compare 563 with another code →
Sources
Wikipedia ↗
Area code 563
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.