210 area code
San Antonio area, Central Time.Area code 210 covers San Antonio in Texas, on Central Time. 726 covers the same area.
Right now in San Antonio
Central Time (CST, UTC-6; CDT, UTC-5 in summer)
Calling hours: Mon to Sat, 9 AM to 9 PM · Sun, noon to 9 PM (Texas law)
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Where 210 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 210 has 1. Each one's share is how many 210 numbers start there. Its biggest metro area is San Antonio-New Braunfels, TX.
- San Antonio100%
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 210 number?
Sales calls to homes and cell phones have legal hours, set by Texas law. Hold every 210 number to them, since you can't tell a work line from a personal cell.
What applies to 210Mon to Sat, 9 AM to 9 PM · Sun, noon to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Texas lawMon to Sat, 9 AM to 9 PM · Sun, noon to 9 PMCalls to residences.Tex. Bus. & Com. Code 301.051(b)(2) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
210 and 726
210 went into service on November 1, 1992, split off from 512, and 830 and 956 were later split off from it. 210 and 726 cover the same area, so new numbers can get either code and neighbors can have different area codes. 210 holds 88% of the area's exchanges; 726 holds the rest. Local calls take all 10 digits.
- 1992210 starts
- 1997830 split off
- 1997956 split off
- 2017726 overlay
Source: NANPA area code database
Calling a list of 210 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
210 area code FAQ
What area code is 210?
210 is a Texas area code for San Antonio.
What time zone is the 210 area code in?
Central Time (CST, UTC-6; CDT, UTC-5 in summer).
Is 726 the same as 210?
Same area, different code. 210 and 726 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 210 numbers?
Mon to Sat, 9 AM to 9 PM · Sun, noon to 9 PM, local time, under Texas law.
When did the 210 area code start?
On November 1, 1992. It was split from 512.
Calling 210 numbers? Reach more of them.
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