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Get a local business phone number in Warren, MN

Warren's area code, prefixes and carriers from NANPA records, and how to put a Warren number in front of your customers.

Area code
218
Exchanges
4NANPA-assigned
Carriers
3
Population
1,549Census 2024 est.

Warren area codes

Warren city is a Census place in Marshall County, Minnesota, with an estimated 1,549 residents in 2024. All 4 exchanges NANPA lists for its rate center are in area code 218. Warren is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 218 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Area codes with exchanges in Warren, MN
Area codeExchanges hereShareIn service sinceOverlay withTime zone
2184100%1947noneCentral

Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.

Phone carriers in Warren

3 carriers hold the 4 exchanges assigned to Warren's rate center. New Cingular Wireless PCS, LLC - Il has the most, with 2. 2 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.

Carriers holding exchanges in Warren, MN
Carrier (NANPA operating company)ExchangesShare
New Cingular Wireless PCS, LLC - Il250%
Onvoy, LLC - MN125%
Citizens Telecom CO Mn-frontier Citizens Com-mn125%

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.

Exchanges (NPA-NXX) assigned in Warren

These are the central office codes NANPA records for Warren. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2010. 1 of the 4 were assigned in 2020 or later.

Prefixes assigned in Warren, MN
Area codePrefixes (NXX)
218201, 400, 712, 745

Source: NANPA utilized central office code file.

When Warren's exchanges were assigned

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

Warren, MN: exchanges by decade assigned
Decade assignedExchangesShare
2010s150%
2020s150%

Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.

How local numbers work in Warren

NANPA ties every exchange to a rate center. For Warren that is WARREN, so a number from one of these exchanges reads as local to people in and around Warren.

Keeping an existing Warren number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 218 when you pick it.

The local business market

Warren is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 154,455 business establishments in Minnesota in 2023, employing 2,803,410 people. The largest sectors by establishment count are health care and social assistance (19,985), retail trade (17,727), and construction (17,568).

Selected industries in Minnesota, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Full-service restaurants3,87987,23022.5
Limited-service restaurants3,84875,56419.6
Offices of real estate agents and brokers3,2476,3412.0
Insurance agencies and brokerages3,13116,0075.1
Residential remodelers2,9889,1253.1
Landscaping services2,39713,6965.7
Law offices2,05215,6637.6
Dental offices1,88417,6509.4

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

Setting up a Warren business line

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.

Per-seat phone plans multiply by headcount. For the rounded average establishment size in Minnesota, 18 users on RingCentral RingEX Core come to $540.00 a month and on Ooma Office Pro $449.10, at month-to-month list prices checked September 28, 2026. On Callata the same 18 people cost $359.00 a month, less than either per-seat plan.

Monthly list price for an 18-person team
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$359.00$4,308.00
Quo (Starter)$19.00 per user$342.00$4,104.00
Nextiva (Core)$23.00 per user$414.00$4,968.00
Ooma (Office Pro)$24.95 per user$449.10$5,389.20
Dialpad (Standard)$27.00 per user$486.00$5,832.00
RingCentral (RingEX Core)$30.00 per user$540.00$6,480.00

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, MN?

218. All exchanges NANPA lists for Warren are in 218.

How many phone companies have exchanges in Warren?

3, holding 4 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; 18 users come to $359.00 a month. For comparison, 18 users on RingCentral RingEX Core list at $540.00 a month (checked September 28, 2026).