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AREA CODE · CALIFORNIA

Area code 650

Area code 650 covers Palo Alto, California. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: California Major City: Palo Alto Pacific Time (PT) Overlay: None
01 / WHERE IT IS

Where is area code 650?

Area code 650 is assigned to Palo Alto and the surrounding region in California. Calls to numbers that start with 650 are routed to this area.

Area code 650 is not currently part of an overlay: it serves its territory on its own.

Counties covered

San Mateo CountySanta Clara CountySan Francisco County

Line types

  • Mobile 23.02%
  • Landline 76.98%
02 / MAP

Area code 650 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Palo Alto

This area code is in the Pacific Time (PT) time zone.

Local timePalo Alto, CA--:--:--

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America/Los_AngelesLive
04 / HOW TO DIAL

How to call Palo Alto

WITHIN THE US650 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 650 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 650 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 650 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 650 555 0123
🇦🇺Australia0011 1 650 555 0123
🇯🇵Japan010 1 650 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 650

Share of the number blocks by carrier and line type.

Landline

AT&T
56%
Verizon Business
10%
Lumen Technologies
9%
Sinch
7%
TPx Communications
4%
Others
13%

Mobile

AT&T Mobility
36%
T-MOBILE USA
35%
Verizon Wireless
21%
USA Mobility
4%
Sinch
2%
Others
2%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 650

708 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(650) 200 Landline San Mateo TwilioTWILIO INTERNATIONAL, INC.
(650) 201 Mobile South San Francisco T-MOBILE USAT-MOBILE USA, INC.
(650) 202 Landline San Mateo Utility TelecomUTILITY TELECOM GROUP, LLC - CA
(650) 203 Landline Mountain View BandwidthBANDWIDTH.COM CLEC, LLC - CA
(650) 204 Landline Millbrae Lumen TechnologiesLEVEL 3 TELECOM OF CALIFORNIA, LP - CA
(650) 205 Mobile South San Francisco USA MobilityUSA MOBILITY WIRELESS, INC.
(650) 206 Landline Woodside TPx CommunicationsU.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS
(650) 207 Mobile Redwood City Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
(650) 208 Mobile Redwood City Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
(650) 209 Landline Los Altos TPx CommunicationsU.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS

Showing 10 of 708 prefixes

07 / FAQ

Frequently asked questions about area code 650

Where is area code 650 used?
Area code 650 serves Palo Alto and the surrounding area in California, including San Mateo County, Santa Clara County, San Francisco County.
What city is area code 650 from?
The main city of area code 650 is Palo Alto, CA.
What time zone is area code 650 in?
Area code 650 is in the Pacific Time (PT) time zone (America/Los_Angeles).
Is 650 an overlay area code?
No. Area code 650 is not currently part of an overlay.
How do I call a number with area code 650 from the United States?
Dial the 10 digits: 650 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 650 number from another country?
Dial your country's exit code (or +), then 1, then 650 and the seven-digit number. From a mobile you can use +1 650 XXX XXXX.
Which carriers use area code 650?
Most landline blocks belong to AT&T and most mobile blocks to AT&T Mobility. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 650 for landlines, mobiles or both?
Both. About 76.98% of the number blocks are landline, 23.02% mobile.
How do I save a 650 number in WhatsApp or my phone?
Save it in international format: +1 650 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 650?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

Nearby area codes

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Other area codes in California

209 · Modesto213 · Los Angeles310 · Compton: Gardena DA323 · Los Angeles341 · Fremont-Newark: Main DA350 · Modesto369 · Santa Rosa408 · San Jose: West DA415 · San Francisco: Central DA424 · Beverly Hills442 · Victorville: Victorville DA510 · Oakland: Main-Piedmont DA530 · Chico559 · Fresno562 · Long Beach619 · San Diego: San Diego DA626 · Alhambra628 · San Francisco: Central DA657 · Anaheim661 · Bakersfield: Main DA669 · San Jose: West DA707 · Santa Rosa714 · Anaheim747 · Burbank: Burbank DA760 · Palm Springs805 · Santa Barbara818 · Van Nuys820 · Camarillo831 · Salinas840 · Pomona858 · La Jolla909 · Ontario916 · Sacramento: Main DA925 · Walnut Creek949 · Irvine951 · Riverside

View all California area codes →