Prefix 210-336 — San Antonio, TX

NANPA CO code assignment, current as of July 28, 2026.

Area code
210
Prefix (NXX)
336
Rate center
San Antonio
State
Texas
Time zone
Central
Code holder
T-MOBILE USA, INC.
OCN
6529
Pooled
Yes (thousands-block pooling)
Assigned
2001-04-18
LATA
566

A phone number starting 210-336 was issued in the San Antonio rate center of TX — part of area code 210.

NANPA's central-office code records list T-MOBILE USA, INC. (OCN 6529) as the code holder, assigned April 18, 2001. Because 210-336 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

A scammer can display 210-336 without ever touching TX. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.

San Antonio is part of the San Antonio-New Braunfels, TX Metropolitan Statistical Area. For routing purposes it sits in LATA 566. Numbers here keep Central time.

Neighboring prefixes

Prefixes adjacent to 210-336
PrefixRate centerCode holder
210-333 San Antonio SOUTHWESTERN BELL
210-334 San Antonio SOUTHWESTERN BELL
210-335 San Antonio SOUTHWESTERN BELL
210-337 San Antonio SOUTHWESTERN BELL
210-338 San Antonio BANDWIDTH.COM CLEC, LLC - TX
210-339 San Antonio MCIMETRO ACCESS TRANSMISSION SERVICES LLC

FAQ

Where is 210-336 located?

The prefix is assigned to the San Antonio rate center in TX, area code 210. It is part of the San Antonio-New Braunfels, TX Metropolitan Statistical Area.

Which company owns 210-336 numbers?

T-MOBILE USA, INC. holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.

Is a call from 210-336 safe to answer?

The prefix itself says nothing about the caller. Legitimate San Antonio businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.