San Mateo, California

Area code 650 phone validation

Calling or texting a list of 650 numbers? Check every number first: valid or dead, mobile, landline or VoIP, and the carrier it is on now.

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Location
San Mateo, California
United States
Time zone
Pacific Time (PT)
Prefixes in use
716
NANPA utilized-codes report

What validating 650 numbers tells you

  • ✓Valid or dead. Disconnected and unassigned 650 numbers are flagged before your dialer or SMS tool reaches them.
  • ✓Mobile, landline or VoIP. Know which numbers can take a text and which are desk phones or app numbers.
  • ✓Carrier. The carrier each number is on now, which can differ from the company that was first given the prefix because numbers are ported.

Who holds 650 prefixes

Companies holding the most 650 prefixes (NPA-NXX blocks) in the NANPA utilized-codes report. This is who was assigned the number blocks, not who serves each number today: a number can be ported to any carrier, which is why a live check matters.

Pacific Bell272 prefixes
New Cingular Wireless Pcs59 prefixes
T-Mobile Usa57 prefixes
Mcimetro Access Transmission Services57 prefixes
Onvoy45 prefixes
Level 3 Communications42 prefixes

150 of 716 650 prefixes are held by companies that commonly supply numbers to VoIP and texting apps.

Places served by 650

Palo Alto, San Mateo, Mt View, Ssnfrncsco, Redwood Cy, Sncrl-Blmt, Los Altos, Millbrae.

Clean your list in 30 seconds

Upload your 650 list as CSV or Excel. Every number comes back marked valid or dead, mobile, landline or VoIP, with carrier.

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Questions

Where is area code 650?

650 serves San Mateo, California, including places such as San Mateo, Mt View, Ssnfrncsco. Time zone: Pacific Time (PT).

Does a 650 number mean the person is in California?

Not always. People keep their numbers when they move or switch carriers, and VoIP numbers can be assigned anywhere. The area code tells you where the number was first assigned, not where the person is today.

What does validating a 650 number tell me?

Whether the number is valid or dead, whether it is a mobile, landline or VoIP line, and the carrier it is on now, from live carrier data.

Does TrueSearch check Do Not Call lists?

No. TrueSearch does not check the National Do Not Call Registry, state DNC lists or litigator lists yet. Run those checks separately where they apply.

650 prefix pages

650-200650-201650-203650-207650-213

More California area codes

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Area code 650 reference: places, prefixes and local time

This guide is general information, not legal advice. TrueSearch for Business checks validity, line type and carrier from licensed telecom data. It does not check the National Do Not Call Registry, state DNC lists or the FCC Reassigned Numbers Database. Not a consumer reporting agency; not for FCRA purposes.