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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 55

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

Reports, 180 Days 314

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 102

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

Carriers / Assignees 33

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.

Phone LookupTop ComplaintsArea CodesNPA-NXXiMessage
Examples: 206-739-5800, 206, 206-739, 48369
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 · 219 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 214 routing rows
  • T-MOBILE USA, INC. · 122 routing rows
  • FRACTEL, LLC · 88 routing rows
  • ONVOY SPECTRUM, LLC · 62 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 60 routing rows
  • COMMIO, LLC · 43 routing rows
  • BANDWIDTH.COM CLEC, LLC - CA · 33 routing rows
  • TON80 COMMUNICATIONS, LLC · 12 routing rows
  • BOOST SUBSCRIBERCO L.L.C. · 10 routing rows
  • LEAP TELECOM, LLC · 10 routing rows
  • MULTIPLE OCN LISTING · 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
820-280-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
820-888-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 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.

FTC report from CALIFORNIA

May 14, 2026 at 6:39 PM

820-224-8590 was logged as a unwanted call. Violation date: May 14, 2026 at 3:37 PM.

FTC report from Glendale, CALIFORNIA

May 13, 2026 at 4:52 PM

820-206-0679 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 8, 2026 at 12:00 PM.

FTC report from Sunbury, PENNSYLVANIA

May 13, 2026 at 2:46 PM

820-529-9174 was logged as a robocall. Violation date: May 13, 2026 at 2:13 PM.

FTC report from Simi Valley, CALIFORNIA

May 13, 2026 at 2:06 PM

820-529-0438 was logged as a live voice. Category: Dropped call or no message. Violation date: May 13, 2026 at 10:32 AM.

FTC report from CALIFORNIA

May 13, 2026 at 1:31 PM

820-758-6570 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 13, 2026 at 1:26 PM.

FTC report from OREGON

May 13, 2026 at 9:32 AM

820-786-0146 was logged as a live voice. Category: Work from home & other ways to make money. Violation date: May 13, 2026 at 5:45 AM.

FTC report from Traverse City, MICHIGAN

May 12, 2026 at 8:39 PM

820-529-0617 was logged as a live voice. Violation date: May 12, 2026 at 7:43 PM.

FTC report from San Diego, CALIFORNIA

May 12, 2026 at 2:20 PM

820-206-0384 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 11, 2026 at 10:58 AM.

FTC report from Fredericksburg, VIRGINIA

May 12, 2026 at 1:14 PM

820-240-2250 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 12, 2026 at 12:00 PM.

FTC report from CALIFORNIA

May 12, 2026 at 1:41 AM

820-234-0352 was logged as a unwanted call. Category: Dropped call or no message. Violation date: May 8, 2026 at 9:53 AM.

FTC report from CALIFORNIA

May 11, 2026 at 5:12 PM

820-200-4615 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 11, 2026 at 3:54 PM.

FTC report from Aberdeen Township, NEW JERSEY

May 10, 2026 at 1:13 PM

820-842-5001 was logged as a robocall. Violation date: May 10, 2026 at 1:09 PM.

FTC report from Aberdeen Township, NEW JERSEY

May 10, 2026 at 7:08 AM

820-900-0047 was logged as a robocall. Violation date: May 9, 2026 at 6:16 PM.

FTC report from Aberdeen Township, NEW JERSEY

May 10, 2026 at 7:06 AM

820-666-6281 was logged as a robocall. Violation date: May 9, 2026 at 4:35 PM.

FTC report from Aberdeen Township, NEW JERSEY

May 10, 2026 at 7:05 AM

820-732-5009 was logged as a robocall. Violation date: May 9, 2026 at 2:25 PM.

FTC report from Seal Beach, CALIFORNIA

May 8, 2026 at 7:32 PM

820-529-0322 was logged as a robocall. Category: No Subject Provided. Violation date: May 3, 2025 at 8:00 AM.

FTC report from Scottsdale, ARIZONA

May 8, 2026 at 6:39 PM

820-921-7925 was logged as a unwanted call. Violation date: May 8, 2026 at 11:58 AM.

FTC report from Clovis, CALIFORNIA

May 6, 2026 at 9:52 PM

820-999-9683 was logged as a robocall. Violation date: May 5, 2026 at 9:18 AM.

FTC report from Santa Barbara, CALIFORNIA

May 6, 2026 at 7:01 PM

820-758-6482 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 6, 2026 at 2:20 PM.

FTC report from SOUTH CAROLINA

May 6, 2026 at 2:43 PM

820-822-2388 was logged as a live voice. Category: Dropped call or no message. Violation date: May 6, 2026 at 2:20 PM.

FTC report from CALIFORNIA

May 6, 2026 at 1:15 PM

820-444-3319 was logged as a robocall. Category: No Subject Provided. Violation date: May 6, 2026 at 9:41 AM.

FTC report from Fair Grove, MISSOURI

May 6, 2026 at 12:40 PM

820-223-2213 was logged as a robocall. Violation date: May 5, 2026 at 5:03 PM.

FTC report from Pueblo West, COLORADO

May 4, 2026 at 2:33 PM

820-222-2633 was logged as a live voice. Category: Dropped call or no message. Violation date: May 4, 2026 at 11:17 AM.

FTC report from MARYLAND

May 2, 2026 at 1:39 PM

820-400-6440 was logged as a robocall. Violation date: May 1, 2026 at 12:51 PM.

FTC report from Albany, NEW YORK

May 2, 2026 at 1:03 PM

820-946-3123 was logged as a live voice. Violation date: May 2, 2026 at 12:24 PM.

FTC report from Merino, COLORADO

May 1, 2026 at 7:35 PM

820-946-3266 was logged as a robocall. Violation date: May 1, 2026 at 12:30 PM.

FTC report from NORTH CAROLINA

May 1, 2026 at 12:29 PM

820-800-8611 was logged as a robocall. Category: Dropped call or no message. Violation date: April 23, 2026 at 4:56 PM.

FTC report from CALIFORNIA

April 30, 2026 at 5:08 PM

820-280-2094 was logged as a live voice. Category: Energy, solar, & utilities. Violation date: April 30, 2026 at 2:07 PM.

FTC report from Summerville, SOUTH CAROLINA

April 30, 2026 at 10:24 AM

820-235-7900 was logged as a robocall. Violation date: April 24, 2026 at 3:56 PM.

FTC report from Tuscumbia, ALABAMA

April 29, 2026 at 9:41 PM

820-600-3083 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: April 29, 2026 at 4:08 PM.