NumberingData
Methodology Download the data
Area code Verified Nov 1, 2026 · Source: NANPA

Area code 210 – Texas

210 has served Texas since 1992, split from 512. All but a handful of its 786 number blocks are allocated (784 of 786), so it is effectively exhausted. AT&T is the largest holder with 54.8% of blocks, ahead of T-Mobile at 12.0%. It shares its geography with overlay codes 726, so local calls take all ten digits. 760 FTC complaints named a 210 caller ID in the 33 days to 30 October 2026, putting it 118th of 422 codes with five or more complaints. All of its numbers sit in a single telephone rate center covering the whole area.

State
Texas
In service since
1992
Time zone
Central
Shares area with
726

Who holds 210 number blocks

Share of the 784 assigned NXX blocks (99.7% of the 786 possible), across 35 carriers. This is share of number blocks, not of subscribers.

  • AT&T54.8%
  • T-Mobile13.5%
  • Verizon11.9%
  • Lumen4.8%
  • Onvoy4.7%
  • Other CLEC / VoIP2.4%
  • Bandwidth2.3%
  • Spok1.7%
  • Charter1%
  • Windstream0.8%
  • Peerless0.8%
  • TPx0.6%
  • American Messaging0.5%
  • Vonage0.1%

Spam complaints naming 210

FTC Do Not Call complaints where the caller ID was a 210 number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are frequently spoofed, so these are complaints about the code, not calls proven to originate in it.

760 complaints in 33 days
#118 of 422 ranked codes

Rate centers in 210

NANPA allocates number blocks to rate centers and records their names abbreviated to ten characters, so these are NANPA's codes rather than place names – CHAMPAURBN is Champaign-Urbana, NWYRCYZN01 is a New York City zone. We show them unchanged instead of guessing at the full names. This code has a single rate center covering its whole area.

SANANTONIO784

Timeline

  1. 1992 210 goes into service, split from or overlaid on 512.

More about 210

Separate pages for the questions that need their own answer: what time it is there, what the complaint data says, who holds the number blocks, and how the code compares with the one it shares its area with.

All prefixes Every one of the 784 assigned NXX blocks, with the holder of each Local time Zone, UTC offset, clock changes and a live clock Spam complaints How often the code appears in FTC complaints, and what to do Carriers Who holds the number blocks, and why that is not who serves them 210 vs 726 Same area, different code – age, capacity and complaints side by side

Frequently asked about 210

What state is area code 210?

Texas. It covers the same area as 210/726.

Can I still get a 210 number?

Only from recycled stock. 784 of the 786 available blocks are already allocated, so new numbers in the area normally come from the overlay codes (210/726).

Is a call from 210 a scam?

Not by itself. 210 drew 760 FTC complaints in the 33 days to 30 October 2026, 118th of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number.

Which carrier owns 210 numbers?

AT&T holds the largest share of assigned number blocks at 54.8%. The rest is spread across 3 other carriers. This is share of number blocks, not of subscribers – people keep their numbers when they switch carriers.

Do I need to dial 10 digits in 210?

Yes – ten digits for local calls in 210, because it shares its area with another code.

Sources and verification

NANPA dialing note for this code: “10D”. Reviewed by the data desk. Spotted an error? Request a correction.

Nearby and related

512 Texas726 Texas