North American Numbers Source-cited · ownership disclosed
Area code
726
In service
United States · since 2017

San Antonio (overlay)

The overlay of area code 210, covering San Antonio and its innermost suburbs. Activated in 2017.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
San Antonio (overlay)
Type
geographic
Status
in service
In service since
2017
Projected exhaust
2072 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 726 is

San Antonio and its innermost suburbs (Bexar County; same footprint as 210).

Communities served wholly or partly by 726:

San AntonioAlamo HeightsCastle HillsConverseSchertzUniversal City

Representative; same territory as 210.

B · Relationships

How it relates to other codes

The codes 726 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 · 2017 210 San Antonio 726 was layered on 210 as an all-services overlay.
What's changing. Active overlay complex (210/726). Mandatory 10-digit dialing since late September 2017.
C · History

How 726 got here

2016-08
Overlay announced by the Texas PUC.
Source: Wikipedia (Area codes 210 and 726)
2017-10
Activated as an overlay; mandatory 10-digit dialing since late September 2017.
Source: Wikipedia (Area codes 210 and 726)
D · Capacity

How full it is

Prefixes assigned
127
Prefixes available
673
Thousands-blocks assigned
1,093

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

Compare 726 with another code →
Sources
Wikipedia ↗
Area codes 210 and 726
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.