CallataGuidesGet a local business phone number in Warren, RI
Warren's area code, prefixes and carriers from NANPA records, and how to put a Warren number in front of your customers.
- Area code
- 401
- Exchanges
- 13NANPA-assigned
- Carriers
- 10
- Population
- 11,095Census 2024 est.
What area code is Warren, RI?
Warren, in Bristol County, Rhode Island, had a Census-estimated population of 11,095 in July 2024. All 13 exchanges NANPA lists for its rate center are in area code 401. Warren is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 401 are dialed as seven digits and toll calls as seven digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 401 | 13 | 100% | 1947 | none | Eastern |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Warren exchanges by carrier
10 carriers hold the 13 exchanges assigned to Warren's rate center. Verizon New England INC. has the most, with 3. 11 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Warren can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Verizon New England INC. | 3 | 23% |
| Paetec Itel, LLC | 2 | 15% |
| Teleport Communications America, LLC - CA | 1 | 7.7% |
| Metropcs, INC. | 1 | 7.7% |
| Comcast Ip Phone, LLC | 1 | 7.7% |
| Onvoy Spectrum, LLC | 1 | 7.7% |
| Bandwidth.com CLEC, LLC - Ri | 1 | 7.7% |
| Mcimetro Access Transmission Services LLC | 1 | 7.7% |
| Onvoy, LLC - Ri | 1 | 7.7% |
| Level 3 Communications, LLC - Ri | 1 | 7.7% |
Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.
Warren phone prefixes
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. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 401 | 237, 245, 246, 247, 252, 289, 303, 310, 337, 561, 628, 694, 903 |
Source: NANPA utilized central office code file.
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 Providence-Warwick, RI-MA metro area, home to 1.7 million people in 2024. County Business Patterns counted 42,731 business establishments in the Providence, RI-MA metro area in 2023, employing 645,576 people. The largest sectors by establishment count are retail trade (5,533), construction (5,278), and health care and social assistance (4,723).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 1,603 | 32,197 | 20.1 |
| Limited-service restaurants | 1,343 | 18,216 | 13.6 |
| Landscaping services | 1,137 | 3,950 | 3.5 |
| Residential remodelers | 1,119 | 3,316 | 3.0 |
| Law offices | 929 | 4,635 | 5.0 |
| Plumbing, heating and air-conditioning contractors | 772 | 6,540 | 8.5 |
| Physician practices | 702 | 12,598 | 17.9 |
| Electrical contractors | 612 | 4,397 | 7.2 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Warren
Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and 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 15-person team is the benchmark here, the rounded average establishment size in the Providence, RI-MA metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $450.00 a month and Ooma Office Pro $374.25. On Callata the same 15 people cost $299.00 a month, less than either per-seat plan.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $299.00 | $3,588.00 |
| Quo (Starter) | $19.00 per user | $285.00 | $3,420.00 |
| Nextiva (Core) | $23.00 per user | $345.00 | $4,140.00 |
| Ooma (Office Pro) | $24.95 per user | $374.25 | $4,491.00 |
| Dialpad (Standard) | $27.00 per user | $405.00 | $4,860.00 |
| RingCentral (RingEX Core) | $30.00 per user | $450.00 | $5,400.00 |
Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.
Frequently asked questions
What area code is Warren, RI?
401. All exchanges NANPA lists for Warren are in 401.
How many phone companies have exchanges in Warren?
10, holding 13 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Warren business number?
Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.
How much is a business phone line in Warren?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 15 users come to $299.00 a month. For comparison, 15 users on RingCentral RingEX Core list at $450.00 a month (checked September 28, 2026).