CallataGuidesGet a local business phone number in Big Rock, IL
Big Rock's area codes, prefixes and carriers from NANPA records, and how to put a Big Rock number in front of your customers.
- Area code
- 630 / 331
- Exchanges
- 8NANPA-assigned
- Carriers
- 7
- Population
- 1,748Census 2024 est.
What area code is Big Rock, IL?
Big Rock township is a Census town in Kane County, Illinois, with an estimated 1,748 residents in 2024. NANPA lists 8 exchanges for its rate center across 2 area codes; 630 has the most (6, 75%). 630 is part of an overlay with 331, so a new local number in Big Rock may carry any of those codes depending on which have numbers available. Big Rock is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 630 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits.
Phone carriers in Big Rock
7 carriers hold the 8 exchanges assigned to Big Rock's rate center. Level 3 Communications, LLC - Il has the most, with 2. 8 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 |
|---|---|---|
| Level 3 Communications, LLC - Il | 2 | 25% |
| Bandwidth.com CLEC, LLC - Il | 1 | 13% |
| Onvoy, LLC | 1 | 13% |
| RCN Telecom Services of Illinios, INC. - Il | 1 | 13% |
| Illinois Bell Tel CO | 1 | 13% |
| Teleport Communications America, LLC - Il | 1 | 13% |
| Mcimetro Access Transmission Services LLC - Il | 1 | 13% |
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 Big Rock
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Big Rock's rate center (BIG ROCK). The earliest assignment date recorded in the file for these codes is 2001. 1 of the 8 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 331 | 310, 850 |
| 630 | 216, 318, 556, 733, 884, 982 |
Source: NANPA utilized central office code file.
When Big Rock's exchanges were assigned
Assignment dates show when each block of Big Rock numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 33% |
| 2010s | 1 | 33% |
| 2020s | 1 | 33% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Rate centers and local calling in Big Rock
NANPA ties every exchange to a rate center. For Big Rock that is BIG ROCK, so a number from one of these exchanges reads as local to people in and around Big Rock.
If your business already has a Big Rock number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Who does business near Big Rock
Big Rock is part of the Chicago-Naperville-Elgin, IL-IN metro area, home to 9.4 million people in 2024. County Business Patterns counted 248,519 business establishments in the Chicago, IL-IN metro area in 2023, employing 4,285,971 people. The largest sectors by establishment count are professional, scientific, and technical services (32,828), health care and social assistance (29,768), and retail trade (25,308).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 8,179 | 139,869 | 17.1 |
| Full-service restaurants | 7,371 | 149,532 | 20.3 |
| Law offices | 5,865 | 46,449 | 7.9 |
| Physician practices | 5,693 | 80,101 | 14.1 |
| Residential remodelers | 5,230 | 12,655 | 2.4 |
| Dental offices | 4,881 | 30,767 | 6.3 |
| Offices of real estate agents and brokers | 4,252 | 11,786 | 2.8 |
| General freight trucking companies (local) | 4,040 | 14,869 | 3.7 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Big Rock business line
For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.
If you already have a number in Big Rock, 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 17-person team is the benchmark here, the rounded average establishment size in the Chicago, IL-IN metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $510.00 a month and Ooma Office Pro $424.15. On Callata the same 17 people cost $339.00 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 | $339.00 | $4,068.00 |
| Quo (Starter) | $19.00 per user | $323.00 | $3,876.00 |
| Nextiva (Core) | $23.00 per user | $391.00 | $4,692.00 |
| Ooma (Office Pro) | $24.95 per user | $424.15 | $5,089.80 |
| Dialpad (Standard) | $27.00 per user | $459.00 | $5,508.00 |
| RingCentral (RingEX Core) | $30.00 per user | $510.00 | $6,120.00 |
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 Big Rock, IL?
Big Rock has exchanges in 630 and 331; 630 has the most.
How many phone companies have exchanges in Big Rock?
7, holding 8 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Big Rock 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 Big Rock?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 17 users come to $339.00 a month. For comparison, 17 users on RingCentral RingEX Core list at $510.00 a month (checked September 28, 2026).