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Before You Call Back

Area code 820

Area code 820 serves California, including Camarillo, Newbury Park and Atascadero (Pacific time). It has been in service since June 30, 2018 and shares its area with 805.

Numbers starting with 820 drew 326 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 98 complaints to the FCC since November 2023. The number on your screen can be faked, so an 820 number proves nothing about where a call came from.

Location
CaliforniaOxnard-Thousand Oaks-Ventura, CA Metropolitan Statistical Area
Time zone
Pacific
In service since
June 30, 2018Created from 805
Overlay
Same area as 805
Local calls
Dial 1 + 10 digits
Exchanges in use
98 of 792held by 22 carriers
Projected to run out
2Q 2082NANPA forecast 2026.2

Complaints about 820 numbers

Reports where the number on the consumer's caller ID (or, for the FCC, the number the caller asked them to call back) starts with 820. These are counts of what people reported; the agencies do not verify them.

FTC reports, Aug 14, 2026 to Nov 11, 2026

326

FCC complaints since November 2023

98

Different 820 numbers reported

401

FCC complaints naming an 820 number, by month

November 2023 to October 2026. Source: FCC Consumer Complaints Data.

Show as a table
MonthComplaints
November 20231
December 20231
January 20242
February 20245
March 20241
April 20242
May 20242
June 20242
July 20246
August 20241
September 20241
October 20243
November 20240
December 20242
January 20254
February 20252
March 20253
April 20252
May 20252
June 20256
July 20251
August 20256
September 20253
October 20250
November 20251
December 20251
January 20262
February 20264
March 20261
April 20262
May 20262
June 20261
July 20262
August 20265
September 20267
October 20265

What people said 820 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 229 of 326 reports were robocalls.

Show as a table
SubjectReports
Other112
Reducing your debt (credit cards, mortgage, student loans)105
Calls pretending to be government, businesses, or family and friends70
Dropped call or no message11
Medical and prescriptions3
Lotteries, prizes, and sweepstakes2

Places served by 820

NANPA lists 31 rate centers for 820. A rate center is the town or district a block of numbers is tied to for billing; sorted here by how many exchanges each holds.
  • Camarillo12
  • Newbury Park10
  • Atascadero8
  • Oxnard8
  • Santa Barbara8
  • Santa Maria6
  • Arroyo Grande3
  • El Rio3
  • Guadalupe3
  • Paso Robles3
  • San Luis Obispo3
  • Simi Valley3
  • Ventura Central3
  • Gaviota2
  • Lompoc2
  • Piru2
  • Pismo Beach2
  • Santa Paula2
  • Thousand Oaks2
  • Ventura East2
  • Bradley1
  • Cayucos1
  • Conejo1
  • Fillmore1
Show all 31 rate centers

Los Alamos, Nipomo, Oak View, Ojai, Parkfield, Point Mugu, Santa Ynez.

Phone companies holding 820 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 99% of these exchanges are pooled: their numbers are handed out in blocks of 1,000 to other carriers, so the holder below is not always the company serving a given number.

Exchanges held, top 8 of 22 carriers

NANPA central office code assignments, file of November 11, 2026.

Show as a table
Carrier (legal name)Exchanges
Fractel, LLC32
New Cingular Wireless PCS, LLC18
Onvoy, LLC - CA12
T-Mobile USA, Inc.8
Cellco Partnership dba Verizon Wireless - CA5
Commio, LLC3
Boost Subscriberco L.L.C.2
Onvoy Spectrum, LLC2

When today's 820 exchanges were assigned

Exchanges still assigned, by year of assignment. Exchanges returned since are not counted.

Show as a table
YearExchanges
20183
201913
20209
202116
20228
202315
202414
20258
202611

Check an 820 number

A check shows the carrier and rate center of the number's exchange and every FTC and FCC report about that exact number. Why the number on screen can be fake.

Other area codes in California

NANPA area code database and central office code file of November 11, 2026; FCC complaints November 1, 2023 to November 11, 2026; FTC reports August 14, 2026 to November 11, 2026. How the data is used.

Official sources (7)Show