Get a local business phone number in Thousand Oaks, CA

Thousand Oaks area codes

Thousand Oaks city is a Census place in Ventura County, California, with an estimated 124,229 residents in 2024. NANPA lists 66 exchanges for its rate center across 2 area codes; 805 has the most (64, 97%). 805 is part of an overlay with 820, so a new local number in Thousand Oaks may carry any of those codes depending on which have numbers available. Thousand Oaks is in the Pacific time zone.

According to NANPA's dialing-plan data, local calls within 805 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits.

Phone carriers in Thousand Oaks

19 carriers hold the 66 exchanges assigned to Thousand Oaks's rate center. Frontier California INC. has the most, with 17. 31 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.

Exchanges (NPA-NXX) assigned in Thousand Oaks

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Thousand Oaks's rate center (THOUSAOAKS). The earliest assignment date recorded in the file for these codes is 2001. None were assigned in 2020 or later.

When Thousand Oaks's exchanges were assigned

Assignment dates show when each block of Thousand Oaks numbers was added to the local supply.

What makes a number local to Thousand Oaks

NANPA ties every exchange to a rate center. For Thousand Oaks that is THOUSAOAKS, so a number from one of these exchanges reads as local to people in and around Thousand Oaks.

Keeping an existing Thousand Oaks number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 805 when you pick it.

Businesses around Thousand Oaks

Thousand Oaks is part of the Oxnard-Thousand Oaks-Ventura, CA metro area, home to 835,000 people in 2024. County Business Patterns counted 22,992 business establishments in the Oxnard, CA metro area in 2023, employing 273,697 people. The largest sectors by establishment count are health care and social assistance (3,270), professional, scientific, and technical services (3,100), and retail trade (2,552).

Business phone service in Thousand Oaks

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 Thousand Oaks, 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 12-person team is the benchmark here, the rounded average establishment size in the Oxnard, CA metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $360.00 a month and Ooma Office Pro $299.40. On Callata the same 12 people cost $239.00 a month, less than either per-seat plan.