Prefix 210-400 — San Antonio, TX
- Area code
- 210
- Prefix (NXX)
- 400
- 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
- 2006-05-06
- LATA
- 566
A phone number starting 210-400 was issued in the San Antonio rate center of TX — part of area code 210.
NANPA's central-office code records list NEW CINGULAR WIRELESS PCS, LLC - IL (OCN 6534) as the code holder, assigned May 6, 2006. Because 210-400 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
A scammer can display 210-400 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
| Prefix | Rate center | Code holder |
|---|---|---|
| 210-397 | San Antonio | SOUTHWESTERN BELL |
| 210-398 | San Antonio | NEW CINGULAR WIRELESS PCS, LLC - IL |
| 210-399 | San Antonio | LEVEL 3 COMMUNICATIONS, LLC - TX |
| 210-401 | San Antonio | ONVOY, LLC - TX |
| 210-402 | San Antonio | SOUTHWESTERN BELL |
| 210-403 | San Antonio | SOUTHWESTERN BELL |
FAQ
Where is 210-400 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 210-400 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 210-400 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.