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650 Area Code Prefixes Directory

Choose a prefix to view phone numbers and related information

O1 Communications
Carrier

Coverage Area
Counties: , Santa Clara
Cities: San Mateo, Pescadero, Los Altos, Redwood City, Woodside, La Honda, Palo Alto, San Bruno, 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, 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, La Honda, Pacifica, San Carlos, Moss Beach, Pescadero, San Mateo

Pacific Bell
Carrier

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

Global Crossing Local Services-ca
Carrier

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

Sprint Spectrum L.p.
Carrier

Coverage Area
Counties: San Mateo,
Cities: Brisbane, San Mateo, Palo Alto, San Bruno, Mountain View, Redwood City, Woodside

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

Mci Worldcom Communications, Ca
Carrier

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

Xo California
Carrier

Coverage Area
Counties: , Alameda
Cities: 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

Level 3 Communications
Carrier

Coverage Area
Counties: , San Francisco
Cities: 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, San Francisco, Woodside, San Mateo, Moss Beach, Half Moon Bay, La Honda, Redwood City, San Carlos, Pescadero

AT&T; Local
Carrier

Coverage Area
Counties: , San Francisco
Cities: 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, San Bruno, San Mateo

Astound Broadband
Carrier

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

33 Wireless Inc.
Carrier

Coverage Area
Cities: Redwood City

T-mobile Usa
Carrier

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

Cf Communications DBA Telekenex
Carrier

Coverage Area
Cities: Palo Alto

Allegiance Telecom
Carrier

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

Broadwing Communications
Carrier

Coverage Area
Cities: Palo Alto, Los Altos, San Bruno, San Carlos, Redwood City, Mountain View

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

Bandwidth.com Clec
Carrier

Coverage Area
Cities: San Mateo

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) 206-5555Unknown

This number continues to call AFTER Christmas. I didn't answer - maybe "he" is now asking about new years day?!

(650) 603-0062Dangerous

Number wasn’t working on playback.

(650) 666-0145Unknown

Called 5 times over 2 weeks, left no voicemail no caller ID

(650) 643-4800Unknown

This number claims to be Facebook and will text your cell phone or send messages on WhatsApp. It is a scam. Don’t click the link they send you.

(650) 417-9099Safe

Google Fiber support

(650) 500-1002Dangerous

I called Capital One using the number on my card, the number that called me it not from Capital One

(650) 417-9099Safe

Google Customer Services

(650) 263-7513Dangerous

social security will not make phone calls.

(650) 206-5555Unknown

The first time I heard it, I was a little unsettled. But this time - he said that he's an automated recording. Which TOTALLy makes sense with the way he says "I'm sorry, you said you were closed for Christmas" Because the way I worded it, triggered that we were closed but I said we had no hours for Christmas.

(650) 763-0551Unknown

WE ARE A HOSPICE CARE COMPANY AND I MUST ANSWER OUR PHONE WHENEVER IT RINGS - WE KEEP GETTING CALLS FROM SOMEONE SAYING HIS NAME IS "ANTEP" AND THAT HE IS WITH GOOGLE - WE HAVE ASKED REPEATEDLY FOR THE CALLS TO STOP - WHEN WE CALL THE # BACK, IT SAYS IT'S GOOGLE ADWORDS AND ASKS FOR A CUSTOMER ID # WHICH WE DO NOT HAVE BECAUSE WE DO NOT HAVE AN ACCT WITH THESE PEOPLE - WITHOUT THE ACCT # OR AN EXT

Recently Unidentified numbers

650 area code numbers that might be spam, scams or that people have reported as unidentified callers

650-547-3899UNKNOWN
650-595-7533Pacific Bell
650-668-8037UNKNOWN
650-219-8175Sprint Spectrum L.p.
650-860-1967Broadwing Communications
650-182-9347UNKNOWN
650-889-5089O1 Communications
650-479-2055U.s. Telepacific Corp.
650-669-8209Metro PCS
650-863-7452New Cingular Wireless PCS
650-891-7813UNKNOWN
650-285-9387Bandwidth.com Clec
650-882-2444Allegiance Telecom
650-276-2497Tw Telecom Of California Lp
650-663-8808UNKNOWN
650-212-3169Pacific Bell
650-260-8433AT&T; Local
650-803-7176UNKNOWN
650-942-3274Cellco Partnership DBA Verizon Wireless

Most searched numbers

Cell
All TimeThis Month
650-989-6425First seen 2019-02-18650-482-1309First seen 2010-10-28
650-196-5587First seen 2016-06-22650-413-7853First seen 2013-11-04
650-705-5549First seen 2017-08-13650-771-5210First seen 2015-02-25
650-227-3026First seen 2016-10-23650-646-8453First seen 2010-05-29
650-241-4961First seen 2012-04-28650-356-3277First seen 2010-08-10
Landline
All TimeThis Month
650-272-3434First seen 2016-12-28650-371-4065First seen 2011-10-18
650-782-6785First seen 2011-04-09650-125-6769First seen 2011-10-25
650-328-7623First seen 2013-06-01650-827-1984First seen 2014-11-12
650-700-3544First seen 2013-05-31650-169-9270First seen 2016-07-24
650-417-3296First seen 2010-06-08650-336-9997First seen 2013-02-08

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