CallataGuidesGet a local business phone number in Dunsmuir, CA
Dunsmuir's area code, prefixes and carriers from NANPA records, and how to put a Dunsmuir number in front of your customers.
- Area code
- 530
- Exchanges
- 3NANPA-assigned
- Carriers
- 3
- Population
- 1,618Census 2024 est.
Area codes in Dunsmuir
With 1,618 residents in the Census 2024 estimate, Dunsmuir sits in Siskiyou County, California. All 3 exchanges NANPA lists for its rate center are in area code 530. 530 is part of an overlay with 837, so a new local number in Dunsmuir may carry any of those codes depending on which have numbers available. Dunsmuir is in the Pacific time zone.
According to NANPA's dialing-plan data, local calls within 530 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 530 | 3 | 100% | 1997 | 837 | Pacific |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Dunsmuir
3 carriers hold the 3 exchanges assigned to Dunsmuir's rate center. Pacific Bell has the most, with 1. 3 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 |
|---|---|---|
| Pacific Bell | 1 | 33% |
| Snowcrest Telephone, INC -ca | 1 | 33% |
| Level 3 Communications, LLC - CA | 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.
Exchanges (NPA-NXX) assigned in Dunsmuir
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Dunsmuir. The earliest assignment date recorded in the file for these codes is 2011. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 530 | 235, 500, 678 |
Source: NANPA utilized central office code file.
How local numbers work in Dunsmuir
Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Dunsmuir's numbers are rated to the DUNSMUIR rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Dunsmuir number.
New local numbers are drawn from carrier inventory, so the exact 530 numbers available change over time; porting an existing number is free.
The local business market
Dunsmuir is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 1,029,689 business establishments in California in 2023, employing 16,405,436 people. The largest sectors by establishment count are professional, scientific, and technical services (143,863), health care and social assistance (132,345), and retail trade (106,675).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 34,527 | 604,758 | 17.5 |
| Full-service restaurants | 31,333 | 628,541 | 20.1 |
| Physician practices | 29,615 | 231,960 | 7.8 |
| Law offices | 22,821 | 148,867 | 6.5 |
| Dental offices | 22,757 | 142,822 | 6.3 |
| Offices of real estate agents and brokers | 22,558 | 53,008 | 2.3 |
| Management consulting firms | 17,851 | 88,119 | 4.9 |
| Residential remodelers | 16,792 | 71,834 | 4.3 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Dunsmuir
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 Dunsmuir, 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 16 users, the rounded average establishment size in California. At list prices checked September 28, 2026, that is $399.20 a month on Ooma Office Pro and $480.00 on RingCentral RingEX Core. On Callata the same 16 people cost $319.00 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 | $319.00 | $3,828.00 |
| Quo (Starter) | $19.00 per user | $304.00 | $3,648.00 |
| Nextiva (Core) | $23.00 per user | $368.00 | $4,416.00 |
| Ooma (Office Pro) | $24.95 per user | $399.20 | $4,790.40 |
| Dialpad (Standard) | $27.00 per user | $432.00 | $5,184.00 |
| RingCentral (RingEX Core) | $30.00 per user | $480.00 | $5,760.00 |
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 Dunsmuir, CA?
530. All exchanges NANPA lists for Dunsmuir are in 530.
How many phone companies have exchanges in Dunsmuir?
3, holding 3 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Dunsmuir 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 Dunsmuir?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 16 users come to $319.00 a month. For comparison, 16 users on RingCentral RingEX Core list at $480.00 a month (checked September 28, 2026).