TKOS — Tech Knowledge Open Systems
  • Pricing
Log inSign up
TKOS
  • Pricing
+27 10 070 6007info@techopensystems.co.za
Log inSign up
Area Codes›California›831
831 · CALIFORNIA AREA CODE

Get a 831 area code phone number for Los Angeles.

Reach the Monterey Bay region with an 831 virtual number — the Salinas Valley's global produce supply chain, MBARI's world-class ocean research, and the Naval Postgraduate School's national security community in Monterey. Activate instantly.

Get your 831 number free See pricing
No credit card requiredLive in secondsCancel anytime
Your new numberLive
(831)555-0140
City
Los Angeles, CA
Provisioned
0.4s
  • Call forwarding
    Ring any device, anywhere
  • Voicemail-to-email
    Transcripts in your inbox
  • Two-way SMS / MMS
    Text from your 831 line
WHAT IS · 831 AREA CODE

What is the 831 area code?

1995
Year introduced
California area code
39M+
Population
California residents
UTC-8
Time zone
Pacific
6+
Cities covered
Across California
25
CA area codes
209 · 310 · 408
What is 831

Area code 831 covers the Monterey Bay region — Santa Cruz, Monterey, Salinas, Watsonville, and Capitola. The Salinas Valley is the 'salad bowl of the world,' producing a significant share of the US's lettuce, broccoli, strawberries, and other field vegetables, with Driscoll's and Tanimura & Antle among the dominant agricultural businesses. UC Santa Cruz is a UC system campus with particular strength in computer science and cognitive science, generating a technology and startup community in the scenic Santa Cruz Mountains. The Monterey Bay Aquarium Research Institute (MBARI) is one of the world's premier ocean science research institutions. Fort Hunter Liggett and Naval Postgraduate School in Monterey add a military and national security dimension.

Key facts
Area Code831
StateCalifornia (CA)
RegionPacific Coast
Time zonePacific Time (PT) · UTC-8
All codes209 · 310 · 408 · 415 · 424 · 442 · 530 · 559 · 619 · 628 · 650 · 657 · 661 · 669 · 707 · 714 · 747 · 760 · 805 · 818 · 831 · 858 · 916 · 925 · 951
CITIES & COVERAGE

Cities served by area code 831.

From Los Angeles to Sacramento 831 covers the Pacific Coast region of California.

6+
Cities
39M+
Residents
1995
Year introduced
UTC-8
Pacific
831 · California
831 · California
Los AngelesPrimary
California, CA
San DiegoCore
California, CA
San JoseCore
California, CA
San FranciscoArea
California, CA
FresnoArea
California, CA
SacramentoArea
California, CA
WHY 831 · FOUR REASONS

Why choose a 831 number?

01

Salinas Valley — the salad bowl of the world

The Salinas Valley produces a staggering share of US lettuce, broccoli, and strawberries, with Driscoll's and Tanimura & Antle among the dominant growers. Agribusiness technology, food safety, and agricultural supply chain companies need a local 831 number to engage this globally important produce supply chain.

02

MBARI — the world's premier ocean research institution

Monterey Bay Aquarium Research Institute conducts cutting-edge deep-sea robotics and oceanographic research. Ocean technology, marine sciences, and research services companies benefit from a local 831 number when engaging MBARI's significant scientific and procurement community.

03

Naval Postgraduate School — military education and research

The Naval Postgraduate School in Monterey is the US Navy's graduate research university, training officers in advanced technology and national security topics. Defence technology and research services companies benefit from a 831 number when engaging NPS's research community.

04

UC Santa Cruz — technology and arts research campus

UC Santa Cruz has produced significant contributions to computer science, cognitive science, and the arts. Technology and research services companies benefit from a local 831 number when engaging UCSC's innovation ecosystem and the Santa Cruz technology community.

14 FEATURES · ZERO ADD-ONS

Everything included on every 831 number.

Every 831 number delivers fourteen professional tools for the Monterey Bay's agriculture-and-research economy — compliance call recording for Naval Postgraduate School's and MBARI's vendor requirements, IVR for the Salinas Valley's produce supply chain community, and analytics for Santa Cruz's technology and Monterey's tourism market.

STACK · CALLING01 / 14

Call forwarding

Redirect every call to any device — mobile, desk phone, or laptop. Set rules by time, caller, or team.

Mobile, desk, laptop
Time-based rules
Per-team logic
Failover backup
CallingIncluded
STACK · CALLING02 / 14

Voicemail

A full visual voicemail inbox — listen in-app, read AI transcripts, or get recordings delivered to your email.

Visual inbox
AI transcription
Email delivery
Unlimited storage
CallingIncluded
STACK · CALLING03 / 14

Voicemail-to-email

Every voicemail is instantly transcribed by AI and emailed — read the message without pressing play.

Instant delivery
AI accuracy
Searchable history
Thread replies
CallingIncluded
STACK · CALLING04 / 14

Custom greetings

Upload or record professional greetings for your main line, hold queue, and after-hours — no studio required.

Per-number greetings
Hold music
After-hours message
Seasonal updates
CallingIncluded
STACK · MESSAGING05 / 14

Two-way SMS / MMS

Send and receive texts, photos, and files from your local business number on any device.

Photo & video MMS
Shared team inbox
Full message history
Group messaging
MessagingIncluded
STACK · MESSAGING06 / 14

SMS auto-replies

Set keyword triggers or business-hours rules to fire instant automated replies — so callers get a response even when your team is off.

Keyword triggers
Schedule-based rules
Custom response text
Opt-out handling
MessagingIncluded
STACK · ROUTING07 / 14

Auto-attendant / IVR

A drag-and-drop call menu routes every caller to the right department — no receptionist, no manual intervention.

Multi-level menus
Voice or keypress
Department routing
24/7 operation
RoutingIncluded
STACK · ROUTING08 / 14

Call queuing

Place callers in a branded hold queue so your team handles every single call — no busy signal, no missed opportunity.

Custom hold music
Position announcer
Callback option
Queue analytics
RoutingIncluded
STACK · ROUTING09 / 14

Business hours routing

Different routing rules for open hours, after hours, and holidays — fully time-zone aware.

Day & time rules
Holiday schedules
Time-zone aware
After-hours voicemail
RoutingIncluded
STACK · ROUTING10 / 14

Simultaneous ring

Ring every device on your team at once — whoever picks up first gets the call. Zero missed calls.

Ring all devices
First-answer wins
Zero missed calls
Team fallback
RoutingIncluded
STACK · ROUTING11 / 14

Local caller ID

Every outbound call shows your local area code number so customers always see a trusted local number.

Outbound local display
Per-user settings
Verified caller ID
Campaign override
RoutingIncluded
STACK · INSIGHTS12 / 14

Call recording

Record calls automatically or on demand. Stored securely in the cloud for compliance, QA, and onboarding.

Auto or on-demand
Secure cloud storage
Downloadable files
Compliance-ready
InsightsIncluded
STACK · INSIGHTS13 / 14

Call analytics

Live dashboards show call volume, peak hours, team performance, and per-number breakdowns.

Live dashboard
Peak-hour charts
Team metrics
CSV export
InsightsIncluded
STACK · INSIGHTS14 / 14

Number portability

Bring your existing number to TKOS at no charge — with zero downtime. Your calls keep routing normally throughout the transfer.

Free port-in
510 day transfer
Zero downtime
All carriers supported
InsightsIncluded
HOW TO GET · UNDER 5 MINUTES

How to get a 831 phone number.

Four steps. Five minutes. No technical setup, no hardware required.

01
Step one

Pick a 831 number

Browse 831 numbers by Santa Cruz, Monterey, Salinas, or Watsonville prefix — or port your existing Monterey Bay number for free.

  • Filter 831 by city or prefix
  • Vanity sequences supported
  • Free number porting
02
Step two

Choose a plan

Select a plan for your Monterey Bay team — MBARI research partner, Salinas Valley agribusiness, or Naval Postgraduate School vendor, every feature included.

  • Month-to-month or annual
  • All features on every plan
  • No setup or hardware fees
03
Step three

Configure & activate

Configure your 831 line with Pacific Time routing for the Salinas Valley's agricultural operating schedule and the Naval Postgraduate School's academic calendar.

  • Drag-and-drop IVR builder
  • Forward to any device
  • Time-zone aware routing
04
Step four

Start taking calls

Take 831 calls anywhere — MBARI's research community, the Salinas Valley's produce network, and Monterey Bay's technology and ocean science corridor all see a trusted local number.

  • Mobile, desk, browser, laptop
  • Live analytics from call #1
  • 24/7 expert support
COVERAGE DIRECTORY

Browse area codes by state.

Pick a region, then select any state to see every active area code with city coverage, time zones, and a number-picker shortcut.

AlabamaAL
205251256334938
AlaskaAK
907
ArizonaAZ
480520602623928
ArkansasAR
479501870
CaliforniaCA
209310408415424442530559619628650657661669707714747760805818831858916925951
ColoradoCO
303719720970
ConnecticutCT
203475860959
DelawareDE
302
FloridaFL
239321352386561689727754772813850863904941954
GeorgiaGA
229404478678706762770912
HawaiiHI
808
IdahoID
208986
IllinoisIL
217224309312331618630708773779815847872
IndianaIN
219260317463574765812930
IowaIA
319515563641712
KansasKS
316620785913
KentuckyKY
270364502606859
LouisianaLA
225318337504985
MaineME
207
MarylandMD
240301410443667
MassachusettsMA
339351413508617774781857978
MichiganMI
231248269313517586616734810906947989
MinnesotaMN
218320507612651763952
MississippiMS
228601662769
MissouriMO
314417573636660816
MontanaMT
406
NebraskaNE
308402531
NevadaNV
702725775
New HampshireNH
603
New JerseyNJ
201551609732848856862908973
New MexicoNM
505575
New YorkNY
212315332518585607631716718838845914917
North CarolinaNC
252336704743828910919980984
North DakotaND
701
OhioOH
216220234330380419440513567614740937
OklahomaOK
405539580918
OregonOR
458503541971
PennsylvaniaPA
215223267272412445484570610717724814878
Rhode IslandRI
401
South CarolinaSC
803839843854864
South DakotaSD
605
TennesseeTN
423615629731865901931
TexasTX
210214254281325346361409430432469512682713726737806817830832903915936940956972979
UtahUT
385435801
VermontVT
802
VirginiaVA
276434540571703757804
WashingtonWA
253360425509564
West VirginiaWV
304681
WisconsinWI
262414534608715920
WyomingWY
307
District of ColumbiaDC
202
Puerto RicoPR
787939
FAQ

831 area code questions, answered.

Everything you need to know before getting a virtual 831 phone number. Our team is one click away for anything else.

Yes. TKOS supports simultaneous ring, call queuing, and user extensions on every 831 number — so your whole team can share one number while each member handles calls from their own device.

Yes. Every TKOS 831 number includes a drag-and-drop IVR auto-attendant. Build multi-level phone menus — press 1 for sales, 2 for support — without any coding or IT help.

The 831 area code was introduced in 1995 and serves the Pacific Coast region of California.

Yes. TKOS supports custom digit sequences on 831 area code numbers. Search for your preferred pattern when selecting a number — vanity sequences are available at no extra cost.

Yes — porting your existing 831 number to TKOS is completely free. Most California port-ins complete in 5–10 business days with zero downtime, and your 831 calls keep routing normally throughout the transition.

Get a Demo

Start free. Scale on the same network.

Try the full UCaaS platform — business phone, team chat, video and AI contact center — free. The platform you pilot today carries your millionth minute. No migration. No replatforming.

Get a DemoSee Pricing
Free trialNo card requiredPort numbers freeMonth-to-month billing
TKOS — Tech Knowledge Open Systems

Africa's #1 Dynamic & Reliable Telecom Leader

Cloud phone, AI contact center and unified communications on one tier-1 SA telecom network.

Platform

  • UCaaS Platform
  • Hosted Phone System
  • AI Contact Center
  • TKOS AI Suite
  • Business SMS & MMS
  • Online Fax
  • HD Video Meetings

Solutions

  • Sales Teams
  • Support Teams
  • Remote Teams
  • SMB
  • SaaS & Tech
  • Healthcare
  • Retail
  • Financial Services
  • Logistics

Features

  • Auto-Attendant & IVR
  • Call Recording
  • Conversation Intelligence
  • AI Sentiment Analysis
  • AI Virtual Assistant
  • Sales Call Intelligence

Company

  • About
  • Contact
  • Pricing
  • Compare
  • System Status
  • Security

Resources

  • Blog
  • Country Codes
  • Area Codes
  • Documentation
  • API Reference
  • Wholesale Voice
  • Wholesale VoIP
Spaces Broadacres Willow Wood, 220 3rd Avenue, Fourways, Gauteng 2191
info@techopensystems.co.za+27 10 070 6007www.tkos.co.za

© 2026 Tech Knowledge Open Systems (TKOS) · All rights reserved.

Sitemap·Privacy·Terms