Skip to content
Before You Call Back

Area code 408

Area code 408 serves California, including San Jose, Sunnyvale and Campbell (Pacific time). It has been in service since January 1, 1959 and shares its area with 669.

Numbers starting with 408 drew 1,543 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 523 complaints to the FCC since November 2023. The number on your screen can be faked, so a 408 number proves nothing about where a call came from.

Location
CaliforniaSan Francisco-Oakland-Fremont, CA Metropolitan Statistical Area and San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area
Time zone
Pacific
In service since
January 1, 1959Created from 415
Overlay
Same area as 669
Local calls
Dial 1 + 10 digits
Exchanges in use
787 of 792held by 28 carriers
Projected to run out
3Q 2063NANPA forecast 2026.2

Complaints about 408 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 408. These are counts of what people reported; the agencies do not verify them.

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

1,543

FCC complaints since November 2023

523

Different 408 numbers reported

1,918

FCC complaints naming a 408 number, by month

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

Show as a table
MonthComplaints
November 202313
December 202311
January 202413
February 202411
March 20248
April 20247
May 202414
June 202414
July 202418
August 202411
September 202419
October 202425
November 202411
December 202410
January 202510
February 202510
March 202518
April 202515
May 202511
June 202519
July 202518
August 202514
September 202521
October 20250
November 20255
December 20256
January 202611
February 202623
March 202617
April 202610
May 202612
June 202624
July 202618
August 202616
September 202623
October 202630

What people said 408 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 970 of 1,543 reports were robocalls.

Show as a table
SubjectReports
Other638
Reducing your debt (credit cards, mortgage, student loans)244
Dropped call or no message197
Calls pretending to be government, businesses, or family and friends160
Energy, solar, and utilities39
Home improvement and cleaning34

Places served by 408

NANPA lists 14 rate centers for 408. 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.
  • San Jose: West DA321
  • San Jose: North DA139
  • Sunnyvale96
  • San Jose: South DA84
  • Campbell43
  • Los Gatos24
  • Morgan Hill19
  • Gilroy16
  • San Martin15
  • Saratoga15
  • Salinas12
  • Hollister1
  • San Antonio1
  • Xxxxxxxxxx1

Phone companies holding 408 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 56% 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 28 carriers

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

Show as a table
Carrier (legal name)Exchanges
Pacific Bell328
New Cingular Wireless PCS, LLC70
Cellco Partnership dba Verizon Wireless - CA65
T-Mobile USA, Inc.42
Mcimetro Access Transmission Services LLC39
Onvoy, LLC - CA35
Level 3 Communications, LLC - CA31
Spok, Inc.27

When today's 408 exchanges were assigned

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

Show as a table
YearExchanges
200137
20029
20042
20053
200616
20078
200812
20095
201019
201124
201215
20137
20141
20211
20221
20237
20242
20251
20261

Check a 408 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