Concord, California

Area code 925 phone validation

Calling or texting a list of 925 numbers? Check every number first: valid or dead, mobile, landline or VoIP, and the carrier it is on now.

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Location
Concord, California
United States
Time zone
Pacific Time (PT)
Prefixes in use
640
NANPA utilized-codes report

What validating 925 numbers tells you

  • ✓Valid or dead. Disconnected and unassigned 925 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 925 prefixes

Companies holding the most 925 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 Bell206 prefixes
New Cingular Wireless Pcs48 prefixes
Mcimetro Access Transmission Services48 prefixes
T-Mobile Usa44 prefixes
Verizon Wireless38 prefixes
Tpx Communications37 prefixes

125 of 640 925 prefixes are held by companies that commonly supply numbers to VoIP and texting apps.

Places served by 925

Walnut Crk, Concord, Pleasanton, Antioch, Livermore, Bshp Rnch, Dubln-Snrm, Danville.

Clean your list in 30 seconds

Upload your 925 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 925?

925 serves Concord, California, including places such as Concord, Pleasanton, Antioch. Time zone: Pacific Time (PT).

Does a 925 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 925 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.

925 prefix pages

925-200925-204925-207925-210

More California area codes

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Area code 925 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.