Prefix 213-337 — Los Angeles:da 01, CA

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

Area code
213
Prefix (NXX)
337
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
2001-05-10
LATA
730

A phone number starting 213-337 was issued in the Los Angeles:da 01 rate center of CA — part of area code 213.

NANPA's central-office code records list MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (OCN 7240) as the code holder, assigned May 10, 2001. Because 213-337 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

A scammer can display 213-337 without ever touching CA. 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.

Los Angeles:da 01 is part of the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area. For routing purposes it sits in LATA 730. Numbers here keep Pacific time.

Neighboring prefixes

Prefixes adjacent to 213-337
PrefixRate centerCode holder
213-334 Los Angeles:da 01 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA
213-335 Los Angeles:da 01 ONVOY, LLC - CA
213-336 Los Angeles:da 10 BANDWIDTH.COM CLEC, LLC - CA
213-338 Los Angeles:da 02 PEERLESS NETWORK OF CALIFORNIA, LLC - CA
213-339 Los Angeles:da 10 PACIFIC BELL
213-340 Los Angeles:da 10 ONVOY, LLC - CA

FAQ

Where is 213-337 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 213-337 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 213-337 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.