Prefix 213-428 — Los Angeles:da 01, CA

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

Area code
213
Prefix (NXX)
428
Rate center
Los Angeles:da 01
State
California
Time zone
Pacific
Code holder
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA
OCN
7240
Pooled
Yes (thousands-block pooling)
Assigned
2017-02-10
LATA
730

213-428 identifies a block of numbers in Los Angeles:da 01, CA, within the 213 area code. Every US prefix is tied to exactly one rate center; this one is Los Angeles:da 01.

The rate center lies in the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area. The serving LATA is 730. Local time follows the Pacific zone.

Treat the on-screen number as a hint, not evidence — 213-428 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.

Code-holder of record: MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (OCN 7240), assigned February 10, 2017. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 213-428 numbers may be served by different companies.

Neighboring prefixes

Prefixes adjacent to 213-428
PrefixRate centerCode holder
213-425 Los Angeles:da 01 LEVEL 3 COMMUNICATIONS, LLC - CA
213-426 Los Angeles:da 01 PACIFIC BELL
213-427 Los Angeles:da 10 PACIFIC BELL
213-429 Los Angeles:da 10 BANDWIDTH.COM CLEC, LLC - CA
213-430 Los Angeles:da 01 PACIFIC BELL
213-431 Los Angeles:da 07 T-MOBILE USA, INC.

FAQ

Where is 213-428 located?

The prefix is assigned to the Los Angeles:da 01 rate center in CA, area code 213. It is part of the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area.

Which company owns 213-428 numbers?

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 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 213-428 safe to answer?

The prefix itself says nothing about the caller. Legitimate Los Angeles:da 01 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.