CallataGuidesGet a local business phone number in Walnut, OH
Walnut's area codes, prefixes and carriers from NANPA records, and how to put a Walnut number in front of your customers.
- Area code
- 220 / 740
- Exchanges
- 4NANPA-assigned
- Carriers
- 4
- Population
- 6,870Census 2024 est.
Area codes in Walnut
Walnut, in Fairfield County, Ohio, had a Census-estimated population of 6,870 in July 2024. NANPA lists 4 exchanges for its rate center across 2 area codes; 220 has the most (2, 50%). 220 is part of an overlay with 740, so a new local number in Walnut may carry any of those codes depending on which have numbers available. Walnut is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 220 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Phone carriers in Walnut
4 carriers hold the 4 exchanges assigned to Walnut's rate center. TWC Ip Enabled Services, LLC has the most, with 1. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Walnut can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| TWC Ip Enabled Services, LLC | 1 | 25% |
| Fractel, LLC | 1 | 25% |
| Onvoy, LLC - Oh | 1 | 25% |
| Ohio Bell Tel CO | 1 | 25% |
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.
Local prefixes for Walnut
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Walnut. The earliest assignment date recorded in the file for these codes is 2002. 2 of the 4 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 220 | 245, 766 |
| 740 | 217, 379 |
Source: NANPA utilized central office code file.
When Walnut's exchanges were assigned
The table groups Walnut's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 33% |
| 2020s | 2 | 67% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Walnut
What a caller sees as "local" is the area code plus prefix. In Walnut, those come from the WALNUT rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 220 numbers available change over time; porting an existing number is free.
The local business market
Walnut is part of the Columbus, OH metro area, home to 2.2 million people in 2024. County Business Patterns counted 46,419 business establishments in the Columbus, OH metro area in 2023, employing 985,064 people. The largest sectors by establishment count are health care and social assistance (6,208), retail trade (5,594), and professional, scientific, and technical services (5,419).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 1,932 | 39,789 | 20.6 |
| Full-service restaurants | 1,399 | 37,471 | 26.8 |
| Physician practices | 1,055 | 20,923 | 19.8 |
| Offices of real estate agents and brokers | 932 | 2,654 | 2.8 |
| Law offices | 836 | 6,289 | 7.5 |
| Dental offices | 801 | 7,022 | 8.8 |
| Insurance agencies and brokerages | 776 | 5,753 | 7.4 |
| Child day care services | 700 | 10,037 | 14.3 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Walnut
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 Walnut 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.
Per-seat phone plans multiply by headcount. For the rounded average establishment size in the Columbus, OH metro area, 21 users on RingCentral RingEX Core come to $630.00 a month and on Ooma Office Pro $523.95, at month-to-month list prices checked September 28, 2026. Callata comes to $419.00 a month for 21 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $419.00 | $5,028.00 |
| Quo (Starter) | $19.00 per user | $399.00 | $4,788.00 |
| Nextiva (Core) | $23.00 per user | $483.00 | $5,796.00 |
| Ooma (Office Pro) | $24.95 per user | $523.95 | $6,287.40 |
| Dialpad (Standard) | $27.00 per user | $567.00 | $6,804.00 |
| RingCentral (RingEX Core) | $30.00 per user | $630.00 | $7,560.00 |
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 Walnut, OH?
Walnut has exchanges in 220 and 740; 220 has the most.
How many phone companies have exchanges in Walnut?
4, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Walnut 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 Walnut?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 21 users come to $419.00 a month. For comparison, 21 users on RingCentral RingEX Core list at $630.00 a month (checked September 28, 2026).