Area code 346

Area code 346 at a glance

NANPA lists 346 as an in-service geographic area code for Texas, first put into service on July 1, 2014. It is an overlay: 346 and 281, 621, 713, and 832 cover the same territory, so neighbors on the same street can have different area codes. It is in the Central time zone. The places with the most assigned exchanges include Houston, Sugar Land, Baytown, Tomball, and Humble. By population, its largest named places are Houston, League City, Sugar Land, Baytown, and Missouri City.

Cities and towns in area code 346

346 holds 4.7% of the 16,097 central office codes assigned in Texas, the 11th most of the state's 29 codes. 25 Census places could be matched to rate centers with 346 exchanges; the most populous are Houston (2.4 million), League City (118,000), Sugar Land (110,000), and Baytown (86,004). Each place page lists the exact prefixes and carriers for that town.

Dialing 346 numbers

According to NANPA's dialing-plan data, local calls within 346 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit permissible at service provider discretion."

Phone companies in area code 346

56 carriers hold the 752 central office codes assigned in 346. Onvoy, LLC - TX has the most, with 133 (18%). 749 of the codes (100%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Rate centers and towns in 346

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 346 has codes in 45 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

346 code assignments over time

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 752 are assigned in 346, 94% of 800. 443 were assigned in 2020 or later.

A local 346 number on Callata

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in area code 346 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.