Prefix 713-370 — Houston, TX

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

Area code
713
Prefix (NXX)
370
Rate center
Houston
State
Texas
Time zone
Central
Code holder
ONVOY, LLC - TX
OCN
903C
Pooled
Yes (thousands-block pooling)
Assigned
2008-08-20
LATA
560

The 713-370 prefix belongs to area code 713 and is anchored to the Houston rate center (TX). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Houston is part of the Houston-Pasadena-The Woodlands, TX Metropolitan Statistical Area. For routing purposes it sits in LATA 560. Numbers here keep Central time.

Code-holder of record: ONVOY, LLC - TX (OCN 903C), assigned August 20, 2008. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 713-370 numbers may be served by different companies.

Caller ID showing 713-370 is not proof the call came from Houston: 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 713-370
PrefixRate centerCode holder
713-367 Houston BANDWIDTH.COM CLEC, LLC - TX
713-368 Houston SOUTHWESTERN BELL
713-369 Houston MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX
713-371 Houston SOUTHWESTERN BELL
713-372 Houston SOUTHWESTERN BELL
713-373 Houston GRANDE COMMUNICATIONS NETWORKS, INC. - TX

FAQ

Where is 713-370 located?

The prefix is assigned to the Houston rate center in TX, area code 713. It is part of the Houston-Pasadena-The Woodlands, TX Metropolitan Statistical Area.

Which company owns 713-370 numbers?

ONVOY, LLC - TX 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 713-370 safe to answer?

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