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 73

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

Reports, 180 Days 382

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.

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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 Ojai Oxnard Parkfield

Top carriers and assignees

  • ONVOY, LLC - CA · 280 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 254 routing rows
  • T-MOBILE USA, INC. · 126 routing rows
  • FRACTEL, LLC · 88 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 73 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 Plano, TEXAS

October 8, 2026 at 11:54 PM

820-426-1860 was logged as a live voice. Violation date: October 8, 2026 at 10:22 PM.

FTC report from CALIFORNIA

October 7, 2026 at 12:59 PM

820-227-4350 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 6, 2026 at 6:39 PM.

FTC report from Friant, CALIFORNIA

October 6, 2026 at 4:57 PM

820-240-8222 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 6, 2026 at 2:02 PM.

FTC report from CALIFORNIA

October 6, 2026 at 3:57 PM

820-529-8758 was logged as a robocall. Violation date: October 6, 2026 at 4:46 PM.

FTC report from MISSOURI

October 3, 2026 at 2:48 PM

820-666-6704 was logged as a robocall. Violation date: October 2, 2026 at 7:10 PM.

FTC report from Elkhart, INDIANA

October 3, 2026 at 12:15 PM

820-500-5275 was logged as a robocall. Violation date: September 2, 2026 at 8:03 PM.

FTC report from TENNESSEE

October 3, 2026 at 10:24 AM

820-899-9166 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 2, 2026 at 12:00 AM.

FTC report from Wellington, MARYLAND

October 2, 2026 at 2:31 PM

820-800-8503 was logged as a robocall. Violation date: October 1, 2026 at 12:00 AM.

FTC report from Callaway, VIRGINIA

October 2, 2026 at 2:00 PM

820-226-2930 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 2, 2026 at 1:08 PM.

FTC report

October 2, 2026 at 12:56 PM

820-247-1564 was logged as a robocall. Violation date: September 30, 2026 at 1:18 PM.

FTC report from Columbia, ILLINOIS

September 30, 2026 at 7:08 PM

820-200-2675 was logged as a unwanted call. Category: Dropped call or no message. Violation date: September 30, 2026 at 11:47 AM.

FTC report from San Diego, CALIFORNIA

September 30, 2026 at 4:50 PM

820-444-4226 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 30, 2026 at 8:55 AM.

FTC report from Conroe, TEXAS

September 30, 2026 at 4:11 PM

820-247-1570 was logged as a robocall. Violation date: September 29, 2026 at 2:24 PM.

FTC report from Columbus, GEORGIA

September 30, 2026 at 6:45 AM

820-444-2016 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 28, 2026 at 4:54 PM.

FTC report from Overland Park, MISSOURI

September 29, 2026 at 6:44 PM

820-240-8581 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 29, 2026 at 12:00 PM.

FTC report from OHIO

September 29, 2026 at 5:11 PM

820-280-8888 was logged as a live voice. Violation date: September 29, 2026 at 4:58 PM.

FTC report from Germantown, WISCONSIN

September 29, 2026 at 4:44 PM

820-242-8043 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 28, 2026 at 6:45 PM.

FTC report from MINNESOTA

September 29, 2026 at 3:15 PM

820-444-2454 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 29, 2026 at 2:09 PM.

FTC report from Westport, CONNECTICUT

September 29, 2026 at 2:40 PM

820-219-8072 was logged as a robocall. Category: Dropped call or no message. Violation date: September 27, 2026 at 4:18 PM.

FTC report from Lubbock, TEXAS

September 29, 2026 at 2:07 PM

820-758-6705 was logged as a robocall. Violation date: September 29, 2026 at 11:29 AM.

FTC report from Columbia, SOUTH CAROLINA

September 29, 2026 at 12:47 PM

820-200-2302 was logged as a live voice. Category: Work from home & other ways to make money. Violation date: September 29, 2026 at 12:46 AM.

FTC report from Phoenix, ARIZONA

September 29, 2026 at 7:46 AM

820-444-5480 was logged as a robocall. Violation date: September 28, 2026 at 5:23 PM.

FTC report from Vero Beach, FLORIDA

September 28, 2026 at 9:25 PM

820-444-2166 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 27, 2026 at 1:07 PM.

FTC report from Sedro Woolley, WASHINGTON

September 28, 2026 at 6:50 PM

820-247-1792 was logged as a live voice. Violation date: September 28, 2026 at 3:50 PM.

FTC report from Harrisonburg, VIRGINIA

September 28, 2026 at 5:52 PM

820-444-3772 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 17, 2026 at 11:08 AM.

FTC report from Layton, UTAH

September 28, 2026 at 5:10 PM

820-758-6266 was logged as a robocall. Violation date: September 28, 2026 at 3:01 PM.

FTC report from CALIFORNIA

September 27, 2026 at 12:04 PM

820-200-3993 was logged as a robocall. Category: No Subject Provided. Violation date: September 25, 2026 at 11:00 AM.

FTC report from Lafayette, LOUISIANA

September 27, 2026 at 10:54 AM

820-900-9485 was logged as a robocall. Violation date: September 25, 2026 at 7:39 PM.

FTC report from San Antonio, FLORIDA

September 25, 2026 at 4:18 PM

820-400-1476 was logged as a robocall. Violation date: September 25, 2026 at 1:27 PM.

FTC report from CALIFORNIA

September 25, 2026 at 3:18 PM

820-758-6518 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 23, 2026 at 6:35 PM.

FTC report from Carbondale, ILLINOIS

September 25, 2026 at 3:01 PM

820-444-3171 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 23, 2026 at 1:13 PM.

FTC report from OHIO

September 25, 2026 at 11:21 AM

820-529-0156 was logged as a unwanted call. Violation date: September 23, 2026 at 4:10 PM.

FTC report from Rochester, NEW YORK

September 23, 2026 at 4:51 PM

820-600-3239 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 18, 2026 at 12:00 PM.

FTC report from San Bernardino, CALIFORNIA

September 23, 2026 at 3:50 PM

820-222-7456 was logged as a robocall. Violation date: February 18, 2026 at 2:40 PM.

FTC report from PENNSYLVANIA

September 23, 2026 at 11:56 AM

820-348-6461 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 22, 2026 at 1:20 PM.

FTC report from Cypress, CALIFORNIA

September 22, 2026 at 7:15 PM

820-216-5783 was logged as a robocall. Category: No Subject Provided. Violation date: September 15, 2026 at 2:50 PM.

FTC report from FLORIDA

September 22, 2026 at 6:49 PM

820-299-9702 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 22, 2026 at 12:00 AM.

FTC report from CALIFORNIA

September 22, 2026 at 6:43 PM

820-587-4031 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 21, 2026 at 12:00 PM.

FTC report from Bonita, CALIFORNIA

September 22, 2026 at 4:40 PM

820-336-8468 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 21, 2026 at 5:03 PM.

FTC report from GEORGIA

September 22, 2026 at 3:32 PM

820-226-2469 was logged as a robocall. Violation date: September 22, 2026 at 3:25 PM.