Prefix 314-519 — Saint Louis, MO

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

Area code
314
Prefix (NXX)
519
Rate center
Saint Louis
State
Missouri
Time zone
Central
Code holder
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO
OCN
7432
Pooled
Yes (thousands-block pooling)
Assigned
2016-10-31
LATA
520

The 314-519 prefix belongs to area code 314 and is anchored to the Saint Louis rate center (MO). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Saint Louis is part of the St. Louis, MO-IL Metropolitan Statistical Area. For routing purposes it sits in LATA 520. Numbers here keep Central time.

The assigned code holder is MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO, operating company number 7432, assigned October 31, 2016. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

Caller ID showing 314-519 is not proof the call came from Saint Louis: 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

Prefixes adjacent to 314-519
PrefixRate centerCode holder
314-516 Saint Louis SOUTHWESTERN BELL
314-517 Ladue T-MOBILE USA, INC.
314-518 Ladue T-MOBILE USA, INC.
314-520 Kirkwood NEW CINGULAR WIRELESS PCS, LLC - IL
314-521 Ladue SOUTHWESTERN BELL
314-522 Ladue SOUTHWESTERN BELL

FAQ

Where is 314-519 located?

The prefix is assigned to the Saint Louis rate center in MO, area code 314. It is part of the St. Louis, MO-IL Metropolitan Statistical Area.

Which company owns 314-519 numbers?

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 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 314-519 safe to answer?

The prefix itself says nothing about the caller. Legitimate Saint Louis businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.