CallataGuidesGet a local business phone number in Greenfield, TN
Greenfield's area code, prefixes and carriers from NANPA records, and how to put a Greenfield number in front of your customers.
- Area code
- 731
- Exchanges
- 6NANPA-assigned
- Carriers
- 5
- Population
- 2,017Census 2024 est.
Area codes in Greenfield
Greenfield city is a Census place in Weakley County, Tennessee, with an estimated 2,017 residents in 2024. All 6 exchanges NANPA lists for its rate center are in area code 731. Greenfield is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 731 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 731 | 6 | 100% | 2001 | none | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Greenfield phone exchanges
5 carriers hold the 6 exchanges assigned to Greenfield's rate center. Cellco Partnership d/b/a Verizon Wireless - TN has the most, with 2. 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.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Cellco Partnership d/b/a Verizon Wireless - TN | 2 | 33% |
| Bellsouth Telecomm INC d/b/a South Central Bell Tel | 1 | 17% |
| Onvoy, LLC - TN | 1 | 17% |
| Aeneas Communications, LLC - TN | 1 | 17% |
| Charter Ip Enabled Services, LLC | 1 | 17% |
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 Greenfield
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Greenfield. The earliest assignment date recorded in the file for these codes is 2001. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 731 | 233, 235, 237, 480, 621, 678 |
Source: NANPA utilized central office code file.
Rate centers and local calling in Greenfield
What a caller sees as "local" is the area code plus prefix. In Greenfield, those come from the GREENFIELD rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 731 numbers available change over time; porting an existing number is free.
Who does business near Greenfield
Greenfield is part of the Martin, TN micropolitan area, home to 33,162 people in 2024. County Business Patterns counted 589 business establishments in the Martin, TN micropolitan area in 2023, employing 8,540 people. The largest sectors by establishment count are retail trade (107), other services (except public administration) (86), and health care and social assistance (71).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 24 | 479 | 20.0 |
| Full-service restaurants | 22 | 328 | 14.9 |
| Physician practices | 14 | — | — |
| Insurance agencies and brokerages | 13 | — | — |
| General automotive repair shops | 13 | — | — |
| Residential remodelers | 10 | 38 | 3.8 |
| Plumbing, heating and air-conditioning contractors | 9 | 90 | 10.0 |
| Landscaping services | 9 | — | — |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A Greenfield number on Callata
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 Greenfield, 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.
The comparison below uses 14 users, the rounded average establishment size in the Martin, TN micropolitan area. At list prices checked September 28, 2026, that is $349.30 a month on Ooma Office Pro and $420.00 on RingCentral RingEX Core. On Callata the same 14 people cost $279.00 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 | $279.00 | $3,348.00 |
| Quo (Starter) | $19.00 per user | $266.00 | $3,192.00 |
| Nextiva (Core) | $23.00 per user | $322.00 | $3,864.00 |
| Ooma (Office Pro) | $24.95 per user | $349.30 | $4,191.60 |
| Dialpad (Standard) | $27.00 per user | $378.00 | $4,536.00 |
| RingCentral (RingEX Core) | $30.00 per user | $420.00 | $5,040.00 |
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 Greenfield, TN?
731. All exchanges NANPA lists for Greenfield are in 731.
How many phone companies have exchanges in Greenfield?
5, holding 6 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Greenfield 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 Greenfield?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 14 users come to $279.00 a month. For comparison, 14 users on RingCentral RingEX Core list at $420.00 a month (checked September 28, 2026).