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 58

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

Reports, 180 Days 352

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 105

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

Carriers / Assignees 35

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 · 257 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 207 routing rows
  • T-MOBILE USA, INC. · 115 routing rows
  • FRACTEL, LLC · 89 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 63 routing rows
  • ONVOY SPECTRUM, LLC · 60 routing rows
  • COMMIO, LLC · 42 routing rows
  • BANDWIDTH.COM CLEC, LLC - CA · 35 routing rows
  • OPENTACT INC. · 11 routing rows
  • PEERLESS NETWORK OF CALIFORNIA, LLC - CA · 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
820-248-XXXX SANTAMARIA Santa Maria 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 NEW YORK

August 13, 2026 at 5:25 PM

820-280-8977 was logged as a unwanted call. Category: No Subject Provided. Violation date: August 12, 2026 at 7:30 PM.

FTC report from Attica, NEW YORK

August 13, 2026 at 3:41 PM

820-444-4024 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 13, 2026 at 12:00 AM.

FTC report from Sackets Harbor, NEW YORK

August 13, 2026 at 2:29 PM

820-212-1376 was logged as a robocall. Violation date: August 10, 2026 at 4:47 PM.

FTC report from Dayton, OHIO

August 13, 2026 at 11:39 AM

820-432-8984 was logged as a live voice. Violation date: August 13, 2026 at 11:32 AM.

FTC report from Wilmington, VIRGINIA

August 13, 2026 at 6:44 AM

820-444-3487 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 12, 2026 at 2:40 PM.

FTC report from Arlington, TEXAS

August 12, 2026 at 7:08 PM

820-444-2404 was logged as a robocall. Violation date: August 11, 2026 at 7:49 PM.

FTC report from CALIFORNIA

August 12, 2026 at 4:21 PM

820-444-2133 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 12, 2026 at 11:00 AM.

FTC report from Townville, SOUTH CAROLINA

August 12, 2026 at 2:20 PM

820-444-3718 was logged as a robocall. Violation date: August 9, 2026 at 12:00 AM.

FTC report from Union, IOWA

August 12, 2026 at 1:09 PM

820-212-1676 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 8, 2026 at 3:39 PM.

FTC report from TEXAS

August 12, 2026 at 12:12 PM

820-444-4640 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 12, 2026 at 12:00 AM.

FTC report from Dallas, TEXAS

August 12, 2026 at 11:35 AM

820-444-5427 was logged as a robocall. Violation date: August 12, 2026 at 10:28 AM.

FTC report from MINNESOTA

August 11, 2026 at 6:12 PM

820-946-5176 was logged as a live voice. Violation date: August 11, 2026 at 4:05 PM.

FTC report from NORTH CAROLINA

August 11, 2026 at 2:38 PM

820-444-3556 was logged as a live voice. Violation date: August 10, 2026 at 12:00 AM.

FTC report from Peachtree Corners, GEORGIA

August 11, 2026 at 12:38 PM

820-216-1756 was logged as a robocall. Category: Vacation & timeshares. Violation date: August 11, 2026 at 12:35 PM.

FTC report from CALIFORNIA

August 10, 2026 at 9:58 PM

820-758-8403 was logged as a live voice. Violation date: August 10, 2026 at 12:00 AM.

FTC report from Oxnard, CALIFORNIA

August 10, 2026 at 9:48 PM

820-758-8403 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 10, 2026 at 9:59 PM.

FTC report from Plano, TEXAS

August 10, 2026 at 8:58 PM

820-444-4432 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 10, 2026 at 5:05 PM.

FTC report from Spotsylvania, VIRGINIA

August 10, 2026 at 6:12 PM

820-444-5937 was logged as a robocall. Violation date: August 10, 2026 at 12:16 PM.

FTC report from Rochester, NEW HAMPSHIRE

August 10, 2026 at 3:47 PM

820-444-2133 was logged as a robocall. Violation date: August 10, 2026 at 3:42 PM.

FTC report from Florida, FLORIDA

August 10, 2026 at 3:21 PM

820-444-5957 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 10, 2026 at 3:06 PM.

FTC report from CALIFORNIA

August 10, 2026 at 2:41 PM

820-587-8929 was logged as a live voice. Violation date: August 10, 2026 at 9:38 AM.

FTC report from NORTH CAROLINA

August 10, 2026 at 2:15 PM

820-444-3556 was logged as a unwanted call. Violation date: August 10, 2026 at 1:06 PM.

FTC report from Winter Garden, FLORIDA

August 10, 2026 at 1:41 PM

820-444-2372 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 10, 2026 at 1:38 PM.

FTC report from CALIFORNIA

August 10, 2026 at 1:11 PM

820-444-2574 was logged as a robocall. Violation date: August 10, 2026 at 9:02 AM.

FTC report from El Paso, TEXAS

August 10, 2026 at 12:53 PM

820-529-0606 was logged as a live voice. Violation date: August 10, 2026 at 10:52 AM.

FTC report from Port Orange, FLORIDA

August 10, 2026 at 11:16 AM

820-223-0786 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 10, 2026 at 12:30 PM.

FTC report from GEORGIA

August 10, 2026 at 10:56 AM

820-444-4858 was logged as a robocall. Violation date: August 9, 2026 at 1:29 PM.

FTC report from Hayward, CALIFORNIA

August 7, 2026 at 5:22 PM

820-444-2896 was logged as a robocall. Violation date: August 7, 2026 at 2:13 PM.

FTC report from WASHINGTON

August 7, 2026 at 4:14 PM

820-223-5111 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 7, 2026 at 5:00 PM.

FTC report from TEXAS

August 7, 2026 at 3:38 PM

820-444-5595 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 6, 2026 at 2:10 PM.

FTC report from CALIFORNIA

August 7, 2026 at 1:27 PM

820-444-4262 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 7, 2026 at 9:33 AM.

FTC report from Oak Lawn, ILLINOIS

August 7, 2026 at 12:56 PM

820-247-1312 was logged as a robocall. Violation date: August 7, 2026 at 3:11 PM.

FTC report from Boiling Springs, SOUTH CAROLINA

August 7, 2026 at 9:50 AM

820-837-6698 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 5, 2026 at 10:49 PM.

FTC report from CALIFORNIA

August 6, 2026 at 11:54 PM

820-212-1515 was logged as a robocall. Category: Vacation & timeshares. Violation date: August 6, 2026 at 8:48 PM.

FTC report from CALIFORNIA

August 6, 2026 at 4:27 PM

820-235-7099 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 6, 2026 at 12:50 PM.

FTC report from Coleman, TEXAS

August 6, 2026 at 4:13 PM

820-240-2727 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 6, 2026 at 3:59 PM.

FTC report from Harrisburg, NORTH CAROLINA

August 5, 2026 at 3:51 PM

820-837-8470 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 5, 2026 at 12:00 PM.

FTC report from Miami, FLORIDA

August 5, 2026 at 10:24 AM

820-444-5149 was logged as a robocall. Violation date: August 5, 2026 at 7:55 AM.

FTC report from Lubbock, TEXAS

July 30, 2026 at 8:50 PM

820-240-2156 was logged as a live voice. Violation date: July 30, 2026 at 5:42 PM.

FTC report from Sherman Oaks, CALIFORNIA

July 30, 2026 at 5:13 PM

820-229-3536 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: July 15, 2026 at 5:03 AM.