San Francisco, California

Area code 628 phone validation

Calling or texting a list of 628 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 Francisco, California
United States
Time zone
Pacific Time (PT)
Prefixes in use
193
NANPA utilized-codes report

What validating 628 numbers tells you

  • ✓Valid or dead. Disconnected and unassigned 628 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 628 prefixes

Companies holding the most 628 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.

Fractel33 prefixes
Onvoy32 prefixes
T-Mobile Usa28 prefixes
Teleport Communications America17 prefixes
Bandwidth.Com Clec13 prefixes
New Cingular Wireless Pcs12 prefixes

85 of 193 628 prefixes are held by companies that commonly supply numbers to VoIP and texting apps.

Places served by 628

Snfc Cntrl, Snfc Mt-Ev, San Rafael, Snfc Junpr, Belvedere, Novato, Cortemadra, Millvalley.

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Questions

Where is area code 628?

628 serves San Francisco, California, including places such as Snfc Mt-Ev, San Rafael, Snfc Junpr. Time zone: Pacific Time (PT).

Which area codes overlap with 628?

415 serves the same area. A list for this area will usually mix these codes, and TrueSearch checks them all the same way.

Does a 628 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 628 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.

628 prefix pages

628-200628-201628-202628-207628-234

More California area codes

415 phone validation209 phone validation213 phone validation279 phone validation310 phone validation323 phone validation341 phone validation350 phone validation408 phone validation424 phone validation442 phone validation510 phone validation530 phone validation559 phone validation562 phone validation619 phone validation626 phone validation650 phone validation657 phone validation661 phone validation669 phone validation

Area code 628 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.