Prefix 210-306 — San Antonio, TX
- Area code
- 210
- Prefix (NXX)
- 306
- Rate center
- San Antonio
- State
- Texas
- Time zone
- Central
- Code holder
- MCIMETRO ACCESS TRANSMISSION SERVICES LLC
- OCN
- 7229
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2011-08-16
- LATA
- 566
210-306 identifies a block of numbers in San Antonio, TX, within the 210 area code. Every US prefix is tied to exactly one rate center; this one is San Antonio.
The rate center lies in the San Antonio-New Braunfels, TX Metropolitan Statistical Area. The serving LATA is 566. Local time follows the Central zone.
Treat the on-screen number as a hint, not evidence — 210-306 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.
NANPA's central-office code records list MCIMETRO ACCESS TRANSMISSION SERVICES LLC (OCN 7229) as the code holder, assigned August 16, 2011. Because 210-306 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 210-303 | San Antonio | NEW CINGULAR WIRELESS PCS, LLC - IL |
| 210-304 | San Antonio | SOUTHWESTERN BELL |
| 210-305 | San Antonio | LEVEL 3 COMMUNICATIONS, LLC - TX |
| 210-307 | San Antonio | NEW CINGULAR WIRELESS PCS, LLC - IL |
| 210-308 | San Antonio | SOUTHWESTERN BELL |
| 210-309 | San Antonio | NEW CINGULAR WIRELESS PCS, LLC - IL |
FAQ
Where is 210-306 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 210-306 numbers?
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 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 210-306 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.