Prefix 210-303 — San Antonio, TX
- Area code
- 210
- Prefix (NXX)
- 303
- Rate center
- San Antonio
- State
- Texas
- Time zone
- Central
- Code holder
- NEW CINGULAR WIRELESS PCS, LLC - IL
- OCN
- 6534
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2007-03-15
- LATA
- 566
The 210-303 prefix belongs to area code 210 and is anchored to the San Antonio rate center (TX). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
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.
NANPA's central-office code records list NEW CINGULAR WIRELESS PCS, LLC - IL (OCN 6534) as the code holder, assigned March 15, 2007. Because 210-303 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
Caller ID showing 210-303 is not proof the call came from San Antonio: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 210-300 | San Antonio | NEW CINGULAR WIRELESS PCS, LLC - IL |
| 210-301 | San Antonio | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
| 210-302 | San Antonio | SOUTHWESTERN BELL |
| 210-304 | San Antonio | SOUTHWESTERN BELL |
| 210-305 | San Antonio | LEVEL 3 COMMUNICATIONS, LLC - TX |
| 210-306 | San Antonio | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
FAQ
Where is 210-303 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 210-303 numbers?
NEW CINGULAR WIRELESS PCS, LLC - IL 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 210-303 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.