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Area code 858

Area code 858 serves California, including La Jolla, San Diego and Del Mar (Pacific time). It has been in service since June 12, 1999 and shares its area with 619.

Numbers starting with 858 drew 1,597 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 749 complaints to the FCC since November 2023. The number on your screen can be faked, so an 858 number proves nothing about where a call came from.

Location
CaliforniaSan Diego-Cula Vista-Carlsbad, CA Metropolitan Statistical Area
Time zone
Pacific
In service since
June 12, 1999Created from 619
Overlay
Same area as 619
Local calls
Dial 1 + 10 digits
Exchanges in use
564 of 792held by 40 carriers
Projected to run out
3Q 2041NANPA forecast 2026.2

Complaints about 858 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 858. These are counts of what people reported; the agencies do not verify them.

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

1,597

FCC complaints since November 2023

749

Different 858 numbers reported

1,996

FCC complaints naming an 858 number, by month

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

Show as a table
MonthComplaints
November 202324
December 202314
January 202416
February 202415
March 202416
April 202436
May 202430
June 202429
July 202442
August 202426
September 202418
October 202431
November 202426
December 202414
January 20254
February 202514
March 20259
April 202522
May 202517
June 202517
July 202522
August 202527
September 202523
October 20250
November 20254
December 20259
January 202621
February 202620
March 202617
April 202620
May 202613
June 202622
July 202623
August 202638
September 202630
October 202630

What people said 858 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 952 of 1,597 reports were robocalls.

Show as a table
SubjectReports
Other682
Reducing your debt (credit cards, mortgage, student loans)365
Calls pretending to be government, businesses, or family and friends170
Dropped call or no message145
Home improvement and cleaning43
Medical and prescriptions26

Most reported 858 numbers

Numbers with at least five reports from three or more places in the last twelve months. Many of them are likely spoofed.

Places served by 858

NANPA lists 19 rate centers for 858. 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.
  • La Jolla167
  • San Diego: Linda Vista DA80
  • San Diego: Mira Mesa DA69
  • Del Mar45
  • Poway45
  • Rancho Bernardo41
  • San Diego: San Diego DA23
  • Rancho Penasquitos22
  • Chula Vista18
  • El Cajon15
  • Rancho Santa Fe14
  • La Mesa8
  • National City5
  • Coronado4
  • Harbison-Alpine3
  • Pine Valley2
  • Campo1
  • Dulzura1
  • Jacumba1

Phone companies holding 858 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 74% 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 40 carriers

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

Show as a table
Carrier (legal name)Exchanges
Pacific Bell151
New Cingular Wireless PCS, LLC50
T-Mobile USA, Inc.44
Fractel, LLC35
Onvoy, LLC - CA35
Mcimetro Access Transmission Services LLC - CA32
Cellco Partnership dba Verizon Wireless - CA31
Teleport Communications America, LLC - CA26

When today's 858 exchanges were assigned

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

Show as a table
YearExchanges
200113
200210
20042
20051
20066
20073
20082
20113
20123
20135
201412
20156
20166
20175
20186
20199
202013
202132
202223
202322
202416
20259
202611

Check an 858 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