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Area code 628

Area code 628 serves California, including San Francisco, San Rafael and Belvedere (Pacific time). It has been in service since March 21, 2015 and shares its area with 415.

Numbers starting with 628 drew 908 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 323 complaints to the FCC since November 2023. The number on your screen can be faked, so a 628 number proves nothing about where a call came from.

Location
CaliforniaSan Francisco-Oakland-Fremont, CA Metropolitan Statistical Area
Time zone
Pacific
In service since
March 21, 2015Created from 415
Overlay
Same area as 415
Local calls
Dial 1 + 10 digits
Exchanges in use
193 of 792held by 33 carriers
Projected to run out
1Q 2087NANPA forecast 2026.2

Complaints about 628 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 628. These are counts of what people reported; the agencies do not verify them.

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

908

FCC complaints since November 2023

323

Different 628 numbers reported

1,130

FCC complaints naming a 628 number, by month

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

Show as a table
MonthComplaints
November 20235
December 20233
January 202410
February 20243
March 20248
April 202413
May 20246
June 20247
July 202412
August 20249
September 202410
October 20243
November 20247
December 20245
January 202510
February 20259
March 202510
April 20259
May 20258
June 20256
July 202512
August 202515
September 20258
October 20250
November 20258
December 202513
January 20266
February 20261
March 20267
April 202613
May 20266
June 20266
July 202611
August 202615
September 202618
October 202627

What people said 628 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 517 of 908 reports were robocalls.

Show as a table
SubjectReports
Other358
Reducing your debt (credit cards, mortgage, student loans)185
Calls pretending to be government, businesses, or family and friends180
Dropped call or no message91
Medical and prescriptions14
Vacation and timeshares5

Places served by 628

NANPA lists 14 rate centers for 628. 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 Francisco: Central DA76
  • San Francisco: Montrose-Evergreen DA26
  • San Rafael17
  • San Francisco: Juniper DA14
  • Belvedere10
  • Corte Madera7
  • Mill Valley7
  • Novato7
  • Sausalito7
  • Ignacio6
  • Nicasio5
  • Inverness4
  • Point Reyes4
  • Stinson Beach-Bolinas3

Phone companies holding 628 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 33 carriers

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

Show as a table
Carrier (legal name)Exchanges
Fractel, LLC33
Onvoy, LLC - CA32
T-Mobile USA, Inc.28
Teleport Communications America, LLC - CA17
Bandwidth.com CLEC, LLC - CA13
New Cingular Wireless PCS, LLC12
Cellco Partnership dba Verizon Wireless - CA9
Peerless Network of California, LLC - CA8

When today's 628 exchanges were assigned

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

Show as a table
YearExchanges
20146
201515
201634
201711
201814
201914
202014
202117
202213
202312
202421
20256
20261

Check a 628 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