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 115

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

Reports, 180 Days 455

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 112

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

Carriers / Assignees 36

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

Cities / Rate Centers 31

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.

Phone LookupTop ComplaintsArea CodesNPA-NXXiMessage
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 Ojai Oxnard Parkfield

Top carriers and assignees

  • ONVOY, LLC - CA · 279 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 254 routing rows
  • T-MOBILE USA, INC. · 125 routing rows
  • FRACTEL, LLC · 88 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 74 routing rows
  • ONVOY SPECTRUM, LLC · 59 routing rows
  • COMMIO, LLC · 39 routing rows
  • BANDWIDTH.COM CLEC, LLC - CA · 34 routing rows
  • PEERLESS NETWORK OF CALIFORNIA, LLC - CA · 12 routing rows
  • LEAP TELECOM, LLC · 10 routing rows
  • MULTIPLE OCN LISTING · 9 routing rows
  • NUSO, LLC · 9 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
820-248-XXXX SANTAMARIA Santa Maria CA
820-249-XXXX VNTRA CNTL Ventura Central CA
820-250-XXXX OJAI Ojai CA
820-251-XXXX PASOROBLES Paso Robles CA
820-252-XXXX ARROYOGRND Arroyo Grande CA
820-253-XXXX CAMARILLO Camarillo CA
820-254-XXXX NEWBURYPRK Newbury Park CA
820-255-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
820-820-XXXX SANBARBARA Santa Barbara 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 PENNSYLVANIA

November 1, 2026 at 12:23 PM

820-587-8493 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: November 1, 2026 at 12:15 PM.

FTC report from PENNSYLVANIA

November 1, 2026 at 3:51 AM

820-356-9937 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 30, 2026 at 12:00 PM.

FTC report from Cleburne, TEXAS

October 31, 2026 at 9:02 PM

820-444-3891 was logged as a robocall. Violation date: October 29, 2026 at 12:23 PM.

FTC report from Worcester, MASSACHUSETTS

October 31, 2026 at 7:52 PM

820-500-5911 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 30, 2026 at 12:00 AM.

FTC report from Buckeye, ARIZONA

October 31, 2026 at 5:42 PM

820-245-1268 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 31, 2026 at 3:13 PM.

FTC report from Buffalo, NEW YORK

October 31, 2026 at 12:58 PM

820-600-6759 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 28, 2026 at 10:14 AM.

FTC report from NEW YORK

October 31, 2026 at 6:15 AM

820-444-4808 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 6, 2026 at 11:09 AM.

FTC report from Wheat Ridge, COLORADO

October 30, 2026 at 11:26 PM

820-500-5421 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 30, 2026 at 11:32 AM.

FTC report from ILLINOIS

October 30, 2026 at 4:56 PM

820-226-2799 was logged as a robocall. Violation date: October 29, 2026 at 12:00 PM.

FTC report from ILLINOIS

October 30, 2026 at 4:43 PM

820-226-2799 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 29, 2026 at 12:01 PM.

FTC report from Haledon, NEW JERSEY

October 30, 2026 at 4:08 PM

820-223-2370 was logged as a robocall. Violation date: October 30, 2026 at 4:35 PM.

FTC report from TENNESSEE

October 30, 2026 at 3:42 PM

820-732-5876 was logged as a robocall. Violation date: October 30, 2026 at 2:34 PM.

FTC report from TENNESSEE

October 30, 2026 at 2:20 PM

820-444-4038 was logged as a robocall. Violation date: October 19, 2026 at 12:00 PM.

FTC report from Newton, KANSAS

October 30, 2026 at 1:12 PM

820-200-8083 was logged as a robocall. Violation date: October 30, 2026 at 4:06 PM.

FTC report from Orange Park, FLORIDA

October 30, 2026 at 10:32 AM

820-786-7105 was logged as a robocall. Violation date: October 29, 2026 at 1:28 PM.

FTC report from San Diego, CALIFORNIA

October 29, 2026 at 11:51 PM

820-432-8583 was logged as a robocall. Violation date: October 29, 2026 at 11:19 AM.

FTC report from PENNSYLVANIA

October 29, 2026 at 8:47 PM

820-666-6485 was logged as a live voice. Violation date: October 23, 2026 at 9:20 AM.

FTC report from PENNSYLVANIA

October 29, 2026 at 8:38 PM

820-334-3967 was logged as a live voice. Violation date: October 23, 2026 at 9:20 PM.

FTC report from Southaven, MISSISSIPPI

October 29, 2026 at 4:25 PM

820-356-7909 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 29, 2026 at 3:20 PM.

FTC report from WASHINGTON

October 29, 2026 at 3:28 PM

820-400-6042 was logged as a robocall. Violation date: October 29, 2026 at 12:04 PM.

FTC report from Dallas, GEORGIA

October 29, 2026 at 3:01 PM

820-667-8647 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 29, 2026 at 1:00 PM.

FTC report from Covina, CALIFORNIA

October 29, 2026 at 2:54 PM

820-899-9768 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 29, 2026 at 11:21 AM.

FTC report from DELAWARE

October 29, 2026 at 2:08 PM

820-600-6933 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 27, 2026 at 12:00 PM.

FTC report from Lucasville, OHIO

October 29, 2026 at 2:05 PM

820-777-7043 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 29, 2026 at 4:45 PM.

FTC report from DELAWARE

October 29, 2026 at 2:02 PM

820-600-6933 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 27, 2026 at 12:00 PM.

FTC report from DELAWARE

October 29, 2026 at 2:01 PM

820-600-6933 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 27, 2026 at 12:00 PM.

FTC report from Temple, TEXAS

October 29, 2026 at 1:47 PM

820-444-4611 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 29, 2026 at 10:08 AM.

FTC report from FLORIDA

October 29, 2026 at 1:24 PM

820-946-3077 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 29, 2026 at 1:20 PM.

FTC report from Spring Valley, CALIFORNIA

October 29, 2026 at 3:24 AM

820-600-0613 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 29, 2026 at 4:57 PM.

FTC report from Rio Rancho, NEW MEXICO

October 28, 2026 at 10:42 PM

820-235-7000 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 28, 2026 at 9:05 PM.

FTC report from NEVADA

October 28, 2026 at 7:14 PM

820-333-3075 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 28, 2026 at 9:46 PM.

FTC report from Chico, CALIFORNIA

October 28, 2026 at 1:05 PM

820-666-6485 was logged as a live voice. Violation date: October 28, 2026 at 9:11 AM.

FTC report from Huntington Beach, CALIFORNIA

October 27, 2026 at 8:38 PM

820-500-5826 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 27, 2026 at 5:24 PM.

FTC report from Whittier, CALIFORNIA

October 27, 2026 at 6:33 PM

820-758-6067 was logged as a live voice. Category: Home security & alarms. Violation date: October 27, 2026 at 12:37 PM.

FTC report from Sunnyvale, CALIFORNIA

October 27, 2026 at 5:47 PM

820-946-5022 was logged as a robocall. Violation date: October 27, 2026 at 2:15 PM.

FTC report from Sunnyvale, CALIFORNIA

October 27, 2026 at 5:45 PM

820-946-5022 was logged as a robocall. Violation date: October 27, 2026 at 2:05 PM.

FTC report from Wylie, TEXAS

October 27, 2026 at 4:52 PM

820-444-3810 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 25, 2026 at 11:42 AM.

FTC report from NEW YORK

October 27, 2026 at 2:23 PM

820-240-8182 was logged as a live voice. Violation date: October 27, 2026 at 2:20 PM.

FTC report from Tavares, FLORIDA

October 27, 2026 at 1:03 PM

820-222-7178 was logged as a robocall. Violation date: October 27, 2026 at 12:37 PM.

FTC report from Hicksville, NEW YORK

October 27, 2026 at 11:02 AM

820-227-4814 was logged as a robocall. Violation date: October 27, 2026 at 10:55 AM.