CallataGuidesGet a local business phone number in Oconto, WI
Oconto's area code, prefixes and carriers from NANPA records, and how to put a Oconto number in front of your customers.
- Area code
- 920
- Exchanges
- 3NANPA-assigned
- Carriers
- 3
- Population
- 4,638Census 2024 est.
Area codes in Oconto
Oconto, in Oconto County, Wisconsin, had a Census-estimated population of 4,638 in July 2024. All 3 exchanges NANPA lists for its rate center are in area code 920. 920 is part of an overlay with 274, so a new local number in Oconto may carry any of those codes depending on which have numbers available. Oconto is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 920 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 |
|---|---|---|---|---|---|
| 920 | 3 | 100% | 1997 | 274 | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Oconto phone exchanges
3 carriers hold the 3 exchanges assigned to Oconto's rate center. TWC Ip Enabled Services, LLC has the most, with 1. 3 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| TWC Ip Enabled Services, LLC | 1 | 33% |
| Brightspeed of North Central Wisconsin, LLC | 1 | 33% |
| Bayland Telephone, LLC | 1 | 33% |
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 Oconto
These are the central office codes NANPA records for Oconto. A caller seeing one of them recognizes a local number. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 920 | 516, 834, 835 |
Source: NANPA utilized central office code file.
How local numbers work in Oconto
NANPA ties every exchange to a rate center. For Oconto that is OCONTO, so a number from one of these exchanges reads as local to people in and around Oconto.
Keeping an existing Oconto number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 920 when you pick it.
The local business market
Oconto is part of the Green Bay, WI metro area, home to 335,000 people in 2024. County Business Patterns counted 7,968 business establishments in the Green Bay, WI metro area in 2023, employing 155,112 people. The largest sectors by establishment count are retail trade (982), health care and social assistance (912), and construction (873).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 257 | 5,288 | 20.6 |
| Limited-service restaurants | 213 | 4,320 | 20.3 |
| Insurance agencies and brokerages | 150 | 871 | 5.8 |
| Physician practices | 144 | — | — |
| Drinking places | 135 | 874 | 6.5 |
| Landscaping services | 124 | 594 | 4.8 |
| Offices of real estate agents and brokers | 114 | 412 | 3.6 |
| Plumbing, heating and air-conditioning contractors | 111 | 1,889 | 17.0 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Oconto business line
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.
If you already have a number in Oconto, 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 the Green Bay, WI metro area, 19 users on RingCentral RingEX Core come to $570.00 a month and on Ooma Office Pro $474.05, at month-to-month list prices checked September 28, 2026. On Callata the same 19 people cost $379.00 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 | $379.00 | $4,548.00 |
| Quo (Starter) | $19.00 per user | $361.00 | $4,332.00 |
| Nextiva (Core) | $23.00 per user | $437.00 | $5,244.00 |
| Ooma (Office Pro) | $24.95 per user | $474.05 | $5,688.60 |
| Dialpad (Standard) | $27.00 per user | $513.00 | $6,156.00 |
| RingCentral (RingEX Core) | $30.00 per user | $570.00 | $6,840.00 |
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 Oconto, WI?
920. All exchanges NANPA lists for Oconto are in 920.
How many phone companies have exchanges in Oconto?
3, holding 3 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Oconto 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 Oconto?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 19 users come to $379.00 a month. For comparison, 19 users on RingCentral RingEX Core list at $570.00 a month (checked September 28, 2026).