Area Code Detail

Area Code 820

California (Ventura, San Luis Obispo, and Santa Barbara Counties) · In service since June 30, 2018

CA
Reports, 30 Days 46

Recent FCC and FTC complaint records tied to this area code.

Reports, 180 Days 324

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 103

Distinct NPA-NXX prefixes surfaced from routing and assignment data.

Carriers / Assignees 34

Named carriers, assignees, or code holders found in routing data.

Cities / Rate Centers 30

Distinct cities or rate centers attached to this area code.

States / Territories 1

Coverage footprint visible from NANPA, pooled block, and Canada routing data.

North American Phone Intelligence

Search a phone number, area code, exchange, or short code

Paste raw digits, a formatted phone number, an area code, an NPA-NXX block, or a short code. US and Canada phone lookups route automatically, and international iMessage checks are available separately.

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Overview

What this area code covers

California (Ventura, San Luis Obispo, and Santa Barbara Counties)

overlaid on 805

Common cities and rate centers

Arroyo Grande Atascadero Bradley Camarillo Cayucos Conejo El Rio Fillmore Gaviota Guadalupe Lompoc Los Alamos Newbury Park Nipomo Oak View Oxnard Parkfield Paso Robles

Top carriers and assignees

  • ONVOY, LLC - CA · 221 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 214 routing rows
  • T-MOBILE USA, INC. · 117 routing rows
  • FRACTEL, LLC · 88 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 64 routing rows
  • ONVOY SPECTRUM, LLC · 62 routing rows
  • COMMIO, LLC · 43 routing rows
  • BANDWIDTH.COM CLEC, LLC - CA · 33 routing rows
  • TON80 COMMUNICATIONS, LLC · 12 routing rows
  • 8X8, INC. · 11 routing rows
  • BOOST SUBSCRIBERCO L.L.C. · 10 routing rows
  • LEAP TELECOM, LLC · 10 routing rows
NPA-NXX

Prefix directory inside area code 820

Each prefix below is collapsed to one primary locality row so you can scan the area code by prefix without the duplicated block-level assignment rows.

Prefix Primary Rate Center Primary City State
820-200-XXXX THOUSAOAKS Thousand Oaks CA
820-201-XXXX OXNARD Oxnard CA
820-202-XXXX SNLUSOBSPO San Luis Obispo CA
820-203-XXXX ATASCADERO Atascadero CA
820-204-XXXX CAMARILLO Camarillo CA
820-205-XXXX NEWBURYPRK Newbury Park CA
820-206-XXXX PASOROBLES Paso Robles CA
820-207-XXXX CAMARILLO Camarillo CA
820-208-XXXX ATASCADERO Atascadero CA
820-209-XXXX GAVIOTA Gaviota CA
820-210-XXXX CAMARILLO Camarillo CA
820-211-XXXX XXXXXXXXXX CA
820-212-XXXX VNTRA EAST Ventura East CA
820-213-XXXX CAMARILLO Camarillo CA
820-214-XXXX NEWBURYPRK Newbury Park CA
820-215-XXXX NEWBURYPRK Newbury Park CA
820-216-XXXX ARROYOGRND Arroyo Grande CA
820-217-XXXX ATASCADERO Atascadero CA
820-218-XXXX LOMPOC Lompoc CA
820-219-XXXX CONEJO Conejo CA
820-220-XXXX PIRU Piru CA
820-221-XXXX SANTAMARIA Santa Maria CA
820-222-XXXX CAMARILLO Camarillo CA
820-223-XXXX SANBARBARA Santa Barbara CA
820-224-XXXX NIPOMO Nipomo CA
820-225-XXXX GUADALUPE Guadalupe CA
820-226-XXXX EL RIO El Rio CA
820-227-XXXX SANTAMARIA Santa Maria CA
820-228-XXXX LOMPOC Lompoc CA
820-229-XXXX SANBARBARA Santa Barbara CA
820-230-XXXX PASOROBLES Paso Robles CA
820-231-XXXX CAMARILLO Camarillo CA
820-232-XXXX NEWBURYPRK Newbury Park CA
820-233-XXXX SNLUSOBSPO San Luis Obispo CA
820-234-XXXX OXNARD Oxnard CA
820-235-XXXX VNTRA CNTL Ventura Central CA
820-236-XXXX SANBARBARA Santa Barbara CA
820-237-XXXX ATASCADERO Atascadero CA
820-238-XXXX CAMARILLO Camarillo CA
820-239-XXXX NEWBURYPRK Newbury Park CA
820-240-XXXX SANBARBARA Santa Barbara CA
820-241-XXXX ATASCADERO Atascadero CA
820-242-XXXX EL RIO El Rio CA
820-243-XXXX CAMARILLO Camarillo CA
820-244-XXXX SANTAMARIA Santa Maria CA
820-245-XXXX SANTAPAULA Santa Paula CA
820-246-XXXX ATASCADERO Atascadero CA
820-247-XXXX NEWBURYPRK Newbury Park CA
820-280-XXXX LOS ALAMOS Los Alamos CA
820-288-XXXX VNTRA EAST Ventura East CA
820-299-XXXX CAMARILLO Camarillo CA
820-300-XXXX GUADALUPE Guadalupe CA
820-311-XXXX XXXXXXXXXX CA
820-333-XXXX THOUSAOAKS Thousand Oaks CA
820-336-XXXX GUADALUPE Guadalupe CA
820-345-XXXX EL RIO El Rio CA
820-346-XXXX ARROYOGRND Arroyo Grande CA
820-348-XXXX OXNARD Oxnard CA
820-356-XXXX POINT MUGU Point Mugu CA
820-380-XXXX PISMOBEACH Pismo Beach CA
820-386-XXXX SIMIVALLEY Simi Valley CA
820-400-XXXX PARKFIELD Parkfield CA
820-411-XXXX XXXXXXXXXX CA
820-426-XXXX CAMARILLO Camarillo CA
820-432-XXXX NEWBURYPRK Newbury Park CA
820-444-XXXX NEWBURYPRK Newbury Park CA
820-465-XXXX OXNARD Oxnard CA
820-500-XXXX GAVIOTA Gaviota CA
820-502-XXXX SIMIVALLEY Simi Valley CA
820-511-XXXX XXXXXXXXXX CA
820-529-XXXX PIRU Piru CA
820-555-XXXX DIR ASST CA
820-587-XXXX SANBARBARA Santa Barbara CA
820-600-XXXX PISMOBEACH Pismo Beach CA
820-611-XXXX XXXXXXXXXX CA
820-666-XXXX SNLUSOBSPO San Luis Obispo CA
820-667-XXXX OXNARD Oxnard CA
820-700-XXXX CA
820-711-XXXX XXXXXXXXXX CA
820-732-XXXX VNTRA CNTL Ventura Central CA
820-758-XXXX SANBARBARA Santa Barbara CA
820-777-XXXX SANTAPAULA Santa Paula CA
820-786-XXXX ATASCADERO Atascadero CA
820-799-XXXX CAMARILLO Camarillo CA
820-800-XXXX CAYUCOS Cayucos CA
820-811-XXXX XXXXXXXXXX CA
820-822-XXXX OXNARD Oxnard CA
820-823-XXXX SANTA YNEZ Santa Ynez CA
820-837-XXXX OXNARD Oxnard CA
820-842-XXXX OAKVIEW Oak View CA
820-850-XXXX FILLMORE Fillmore CA
820-880-XXXX SANBARBARA Santa Barbara CA
820-888-XXXX SIMIVALLEY Simi Valley CA
820-899-XXXX SANTAMARIA Santa Maria CA
820-900-XXXX BRADLEY Bradley CA
820-911-XXXX XXXXXXXXXX CA
820-946-XXXX SANTAMARIA Santa Maria CA
820-950-XXXX CA
820-958-XXXX CA
820-959-XXXX CA
820-976-XXXX CA
820-998-XXXX ATASCADERO Atascadero CA
820-999-XXXX OXNARD Oxnard CA
Recent Signals

Latest complaint activity tied to 820

Complaint pages are the strongest indexing opportunity for this site right now, especially for exact phone numbers and toll-free exchanges.

FTC report from NEW JERSEY

June 8, 2026 at 7:45 PM

820-822-2023 was logged as a live voice. Violation date: June 8, 2026 at 3:24 PM.

FTC report from Fresno, CALIFORNIA

June 8, 2026 at 7:37 PM

820-998-0071 was logged as a live voice. Violation date: June 8, 2026 at 4:28 PM.

FTC report from Oceanside, CALIFORNIA

June 5, 2026 at 9:41 PM

820-216-5599 was logged as a live voice. Violation date: June 5, 2026 at 6:35 PM.

FTC report from Arroyo Grande, CALIFORNIA

June 5, 2026 at 3:14 PM

820-223-1036 was logged as a robocall. Category: Dropped call or no message. Violation date: June 5, 2026 at 12:12 PM.

FTC report from Clovis, CALIFORNIA

June 5, 2026 at 1:57 AM

820-444-5069 was logged as a live voice. Violation date: May 13, 2026 at 3:18 PM.

FTC report from Lompoc, CALIFORNIA

June 4, 2026 at 6:22 PM

820-823-2928 was logged as a robocall. Violation date: June 1, 2026 at 9:06 AM.

FTC report from Chelmsford, MASSACHUSETTS

June 4, 2026 at 11:11 AM

820-386-3550 was logged as a robocall. Violation date: June 3, 2026 at 12:56 PM.

FTC report from CALIFORNIA

June 3, 2026 at 9:37 PM

820-732-0823 was logged as a robocall. Violation date: June 1, 2026 at 1:03 PM.

FTC report from Bradenton, FLORIDA

June 3, 2026 at 5:11 PM

820-822-2694 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 3, 2026 at 4:54 PM.

FTC report from Amherst, NEW YORK

June 3, 2026 at 9:09 AM

820-800-8210 was logged as a robocall. Violation date: June 1, 2026 at 4:23 PM.

FTC report from Watertown, MASSACHUSETTS

June 1, 2026 at 8:00 PM

820-240-2591 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 1, 2026 at 7:45 PM.

FTC report from Berlin, CONNECTICUT

June 1, 2026 at 4:29 PM

820-529-9189 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 25, 2026 at 3:17 PM.

FTC report from WISCONSIN

June 1, 2026 at 2:39 PM

820-758-6944 was logged as a live voice. Violation date: June 1, 2026 at 1:36 PM.

FTC report from Jeffersontown, KENTUCKY

June 1, 2026 at 12:49 PM

820-667-8162 was logged as a unwanted call. Category: No Subject Provided. Violation date: May 30, 2026 at 7:58 PM.

FTC report from Bloomington, ILLINOIS

May 27, 2026 at 5:14 PM

820-356-6251 was logged as a robocall. Violation date: May 22, 2026 at 10:49 AM.

FTC report from WYOMING

May 27, 2026 at 3:48 PM

820-946-5543 was logged as a robocall. Violation date: May 27, 2026 at 9:02 AM.

FTC report from CALIFORNIA

May 27, 2026 at 12:04 PM

820-900-0790 was logged as a unwanted call. Violation date: May 27, 2026 at 9:01 AM.

FTC report from Austin, TEXAS

May 26, 2026 at 7:22 PM

820-529-0744 was logged as a unwanted call. Category: No Subject Provided. Violation date: May 26, 2026 at 6:16 PM.

FTC report from Sparks, NEVADA

May 26, 2026 at 3:21 PM

820-786-7991 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 23, 2026 at 10:00 AM.

FTC report from Wildwood, MISSOURI

May 26, 2026 at 10:43 AM

820-240-8069 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 26, 2026 at 8:25 AM.

FTC report from Plainview, TEXAS

May 25, 2026 at 4:01 PM

820-600-0810 was logged as a robocall. Violation date: May 25, 2026 at 2:41 PM.

FTC report from CALIFORNIA

May 25, 2026 at 1:43 PM

820-206-0386 was logged as a robocall. Category: Vacation & timeshares. Violation date: May 25, 2026 at 10:40 AM.

FTC report from MISSOURI

May 24, 2026 at 2:58 PM

820-348-6825 was logged as a robocall. Violation date: May 23, 2026 at 3:03 PM.

FTC report from Coeur D Alene, IDAHO

May 22, 2026 at 2:43 PM

820-800-8264 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 1, 2026 at 4:02 PM.

FTC report from Los Angeles, CALIFORNIA

May 22, 2026 at 1:08 PM

820-356-6354 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 22, 2026 at 12:00 PM.

FTC report from ILLINOIS

May 22, 2026 at 12:44 PM

820-356-6182 was logged as a live voice. Violation date: May 22, 2026 at 12:00 PM.

FTC report from OHIO

May 22, 2026 at 12:36 PM

820-400-6254 was logged as a live voice. Category: No Subject Provided. Violation date: May 22, 2026 at 10:10 AM.

FTC report from Poway, CALIFORNIA

May 21, 2026 at 6:47 PM

820-356-6113 was logged as a robocall. Category: Computer & technical support. Violation date: May 21, 2026 at 3:25 PM.

FTC report from CALIFORNIA

May 21, 2026 at 6:23 PM

820-400-6225 was logged as a robocall. Violation date: May 21, 2026 at 3:20 PM.

FTC report from Charleston, SOUTH CAROLINA

May 21, 2026 at 7:16 AM

820-232-0345 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 20, 2026 at 8:30 AM.

FTC report from Beverly Hills, CALIFORNIA

May 20, 2026 at 7:49 PM

820-444-9146 was logged as a robocall. Violation date: May 20, 2026 at 4:33 PM.

FTC report from CALIFORNIA

May 20, 2026 at 4:20 PM

820-206-0354 was logged as a robocall. Category: Dropped call or no message. Violation date: May 19, 2026 at 9:44 AM.

FTC report from Dallas, TEXAS

May 20, 2026 at 12:44 PM

820-786-7088 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 20, 2026 at 11:40 AM.

FTC report from Lakeview, TEXAS

May 19, 2026 at 7:28 PM

820-500-0207 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 19, 2026 at 6:18 PM.

FTC report from La Mesa, CALIFORNIA

May 19, 2026 at 6:41 PM

820-900-3308 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 19, 2026 at 2:26 PM.

FTC report from ALASKA

May 18, 2026 at 4:15 PM

820-221-5426 was logged as a robocall. Category: Dropped call or no message. Violation date: May 18, 2026 at 12:08 PM.

FTC report from ARIZONA

May 18, 2026 at 4:00 PM

820-500-0640 was logged as a live voice. Violation date: May 18, 2026 at 12:55 PM.

FTC report from MISSOURI

May 17, 2026 at 11:55 AM

820-758-6604 was logged as a robocall. Violation date: May 15, 2026 at 2:18 PM.

FTC report from Tustin, CALIFORNIA

May 14, 2026 at 11:35 PM

820-206-6490 was logged as a robocall. Violation date: May 14, 2026 at 6:34 PM.

FTC report from Ridgecrest, CALIFORNIA

May 14, 2026 at 8:03 PM

820-587-9103 was logged as a robocall. Violation date: May 14, 2026 at 11:11 AM.