Get a local business phone number in Warren, MA

Warren area codes

Warren, in Worcester County, Massachusetts, had a Census-estimated population of 5,086 in July 2024. All 5 exchanges NANPA lists for its rate center are in area code 413. Warren is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 413 are dialed as seven digits and toll calls as 1 plus ten digits.

Phone carriers in Warren

5 carriers hold the 5 exchanges assigned to Warren's rate center. Level 3 Communications, LLC - Ma has the most, with 1. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.

Exchanges (NPA-NXX) assigned in Warren

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Warren's rate center (WARREN). The earliest assignment date recorded in the file for these codes is 2001. 2 of the 5 were assigned in 2020 or later.

When Warren's exchanges were assigned

Assignment dates show when each block of Warren numbers was added to the local supply.

What makes a number local to Warren

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Warren's numbers are rated to the WARREN rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Warren number.

If your business already has a Warren number, porting it to Callata is free and keeps it on your cards, listings and vehicles.

Businesses around Warren

Warren is part of the Worcester, MA metro area, home to 881,000 people in 2024. County Business Patterns counted 19,181 business establishments in the Worcester, MA metro area in 2023, employing 319,255 people. The largest sectors by establishment count are construction (2,610), health care and social assistance (2,418), and retail trade (2,405).

Business phone service in Warren

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

If you already have a number in Warren, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

A 17-person team is the benchmark here, the rounded average establishment size in the Worcester, MA metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $510.00 a month and Ooma Office Pro $424.15. On Callata the same 17 people cost $339.00 a month, less than either per-seat plan.