650 Area Code Prefixes Directory

If you know the complete number you’re looking up, please use the Phone Number Search above. Or to explore prefixes in different coverage areas, please use the tables below.

O1 Communications
Carrier

Coverage Area
Counties: , Santa Clara
Cities: San Mateo, Pescadero, Los Altos, Redwood City, Woodside, La Honda, Palo Alto, San Bruno, Half Moon Bay, San Jose, Pacifica

The Telephone Connection Local Services
Carrier

Coverage Area
Cities: San Mateo, Palo Alto

Tw Telecom Of California Lp
Carrier

Coverage Area
Counties: San Francisco,
Cities: San Francisco, Half Moon Bay, Pescadero, Palo Alto, San Mateo, San Carlos, Redwood City

Usa Mobility Wireless
Carrier

Coverage Area
Cities: San Bruno, San Mateo, Mountain View

Mpower Communications Corp
Carrier

Coverage Area
Counties: , San Francisco, Santa Clara
Cities: Woodside, Palo Alto, San Francisco, San Jose, Redwood City, San Mateo, San Carlos

Cellco Partnership DBA Verizon Wireless
Carrier

Coverage Area
Cities: Redwood City, Palo Alto, Mountain View, San Bruno, San Carlos, San Mateo, Millbrae

U.s. Telepacific Corp.
Carrier

Coverage Area
Counties: Santa Clara, , San Francisco
Cities: San Jose, San Bruno, San Francisco, Redwood City, Woodside, Millbrae, Half Moon Bay, La Honda, Pacifica, San Carlos, Moss Beach, Pescadero, San Mateo

Pacific Bell
Carrier

Coverage Area
Counties: , San Francisco
Cities: Mountain View, San Mateo, Palo Alto, Redwood City, San Bruno, Millbrae, Colma, Pacifica, San Carlos, San Francisco, Woodside, Los Altos, Half Moon Bay, Moss Beach, La Honda, Pescadero

Mci Worldcom Communications, Ca
Carrier

Coverage Area
Cities: Mountain View, Redwood City, San Bruno, Moss Beach, Palo Alto, Millbrae

Global Crossing Local Services-ca
Carrier

Coverage Area
Counties: , San Francisco
Cities: Mountain View, Redwood City, San Francisco, Palo Alto, San Mateo, San Carlos

American Messaging (am)
Carrier

Coverage Area
Cities: San Mateo, San Bruno, Palo Alto, Redwood City

American Messaging Services
Carrier

Coverage Area
Cities: Redwood City, Palo Alto, Mountain View, San Mateo, San Carlos

Xo California
Carrier

Coverage Area
Counties: , Alameda
Cities: San Mateo, San Bruno, Fremont, Millbrae, San Carlos, Pescadero, Woodside, Redwood City

Brooks Fiber Communications Of California
Carrier

Coverage Area
Cities: San Mateo, Redwood City, San Bruno, San Carlos, Sunnyvale

Pac - West Telecomm
Carrier

Coverage Area
Cities: Millbrae, San Mateo, Redwood City, Half Moon Bay, Woodside, San Bruno, Pescadero, San Carlos, Palo Alto, Los Altos, Moss Beach, Pacifica, La Honda, Mountain View

Level 3 Communications
Carrier

Coverage Area
Counties: , San Francisco
Cities: Redwood City, San Mateo, Pescadero, San Francisco, Palo Alto, La Honda, San Carlos, San Bruno

Peerless Network Of California
Carrier

Coverage Area
Cities: Palo Alto

Teleport Communications Group - San Francisco
Carrier

Coverage Area
Counties: , Santa Clara, San Francisco
Cities: Palo Alto, Mountain View, San Jose, Redwood City, San Francisco, Woodside, San Mateo, Moss Beach, Half Moon Bay, La Honda, San Carlos, Pescadero

AT&T Local
Carrier

Coverage Area
Counties: , San Francisco
Cities: Redwood City, San Carlos, Mountain View, San Francisco, Palo Alto, San Mateo

Metro PCS
Carrier

Coverage Area
Counties: San Francisco,
Cities: San Francisco, Pacifica, Los Altos, Palo Alto, Mountain View, Redwood City, San Bruno, San Mateo

Astound Broadband
Carrier

Coverage Area
Counties: , San Francisco
Cities: San Bruno, Mountain View, San Mateo, Redwood City, San Francisco

33 Wireless Inc.
Carrier

Coverage Area
Cities: Redwood City

T-mobile Usa
Carrier

Coverage Area
Counties: , San Francisco
Cities: San Mateo, Palo Alto, Los Altos, Millbrae, Mountain View, Half Moon Bay, San Francisco

Bandwidth.com Clec
Carrier

Coverage Area
Cities: Palo Alto, San Mateo

Broadwing Communications
Carrier

Coverage Area
Cities: San Mateo, Palo Alto, Los Altos, San Bruno, San Carlos, Redwood City, Mountain View, Pescadero, Half Moon Bay

Cf Communications DBA Telekenex
Carrier

Coverage Area
Cities: Palo Alto

Allegiance Telecom
Carrier

Coverage Area
Counties: , San Francisco
Cities: Sunnyvale, Redwood City, San Mateo, San Carlos, Palo Alto, San Francisco, Los Altos, Mountain View, Half Moon Bay, Moss Beach, La Honda, Woodside, Pescadero

Mcimetro Access Transmission Services LLC
Carrier

Coverage Area
Counties: , San Francisco
Cities: Palo Alto, San Mateo, Mountain View, Redwood City, San Carlos, San Francisco, Half Moon Bay, La Honda, Los Altos

North County Communications Corp.
Carrier

Coverage Area
Cities: Mountain View

Utility Telephone
Carrier

Coverage Area
Cities: San Carlos, S San Fran

Sbc Internet Services
Carrier

Coverage Area
Cities: La Honda

The 650 area code is located in San Jose, California including San Mateo, San Bruno and was originally put into service on October 11th 1997. Find whose number this is.

Recently Reported Numbers

(650) 275-5544Neutral

Unsolicited and unwelcome texting soliciting votes for her campaign

(650) 514-6272Unknown

Called me on my cellphone. No message left.

(650) 239-2150Unknown

Left no message.

(650) 339-7082Unknown

Received a call. No one was on the line after my answer.

(650) 262-1471Dangerous

Low-life, bottom-feeding robo-scum calling again with the same tired, old home improvement scam.

(650) 747-4488Dangerous

Wyndham Hotel Scammers. They are phishing for credit card numbers to "hold" your free vacation. They are idiot scammers. Sounds like a foreign call center.

(650) 239-2154Unknown

Any idea who could call from this phone number.

(650) 900-5655Dangerous

Same as many stories above. Almost non-understandable Indian accent. Sent a google verification code (from a number google has actually used for the same purpose), confirmed a bunch of details, then said I needed to pay $159 to verify my listing because I had failed to claim it after 24 months had lapsed.

(650) 421-9912Dangerous

Scam caller

(650) 514-3090Unknown

Just called me. No message.

Recently Searched Numbers

No additional information reported for these searched numbers. Received a call from any phone number listed below? Please consider helping the community by reporting your experience.

650-291-1491
Report
Cellco Partnership DBA Verizon Wireless
650-572-2355
Report
Pacific Bell
650-338-9852
Report
UNKNOWN
650-937-9398
Report
Pacific Bell
650-204-3445
Report
Tw Telecom Of California Lp
650-330-5169
Report
Pacific Bell
650-526-1661
Report
Pacific Bell
650-846-5877
Report
Pacific Bell
650-443-8747
Report
U.s. Telepacific Corp.
650-919-2799
Report
Pacific Bell
650-947-9324
Report
Pacific Bell
650-438-1583
Report
New Cingular Wireless PCS
650-554-6600
Report
Pacific Bell
650-548-3011
Report
Pacific Bell
650-216-6457
Report
Pacific Bell
650-450-6408
Report
New Cingular Wireless PCS
650-634-1282
Report
Pacific Bell
650-192-9133
Report
UNKNOWN
650-485-8007
Report
Pacific Bell

Most searched numbers

Cell
All TimeThis Month
650-951-7667First seen 2012-12-16650-785-5874First seen 2019-09-30
650-725-4413First seen 2011-05-12650-290-5255First seen 2011-05-16
650-532-1302First seen 2018-02-19650-765-5053First seen 2016-05-13
650-793-1910First seen 2019-01-19650-672-2584First seen 2011-02-17
650-991-4264First seen 2011-01-01650-840-3092First seen 2012-05-29
Landline
All TimeThis Month
650-824-1716First seen 2016-11-21650-527-3143First seen 2012-01-13
650-862-1218First seen 2019-08-25650-715-6815First seen 2014-09-23
650-196-9492First seen 2015-09-13650-144-3896First seen 2020-01-28
650-573-3253First seen 2016-04-09650-817-5447First seen 2014-03-21
650-897-8937First seen 2018-10-23650-747-7572First seen 2013-10-17

Cities With coverage

CITY LIST
Brisbane
Colma
Fremont
Half Moon Bay
La Honda
Los Altos
Millbrae
Moss Beach
Mountain View
Pacifica
Palo Alto
Pescadero
Redwood City
S San Fran
San Bruno
San Carlos
San Francisco
San Jose
San Mateo
Sunnyvale
Woodside