Question

Check for Valid U.S. Cell Phone Number

Asked by: itcdr

Is there anyway to check if a number is a valid U.S. cellphone number?

it will be in this format:
0000000000 (10 digits, area code+number)

and the user will have selected their service provider (ie: Verizon)


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Asked On
2007-06-30 at 13:41:47ID22668736
Tags

number

,

valid

,

phone

,

us

,

cell

Topics

PHP Scripting Language

,

Scripting Languages

,

Cellular Phones & Carriers

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Answers

 

by: lherrouPosted on 2007-06-30 at 14:14:03ID: 19396994

itcdr,

I'm afraid the answer is no. This is due to phone number portability here in the US - you can take your cell phone number to another service - you can even be able to take your land line number to a cellular service, and the reverse.

Cheers,
LHerrou

 

by: itcdrPosted on 2007-06-30 at 14:21:03ID: 19397007

alright, then is it possible to check if it's at least a valid number or a possible valid number? like 1111111111 is not going to be someone's cell number.

 

by: TheMaximumWeaselPosted on 2007-06-30 at 15:43:16ID: 19397160

Im sure there is a list of valid exchange numbers that you can use. What I would do is get a list of us area codes. Then a list of exchange numbers and which provider they belong to. (Exchange numbers are the first three #'s after the area code) Then check the phone number using this info, thats about the most indepth you could probably do. And if your trying to run a cell phone service you could send the user a text message with a code and ask the user to reply within 15-30 minutes.

Max

 

by: itcdrPosted on 2007-06-30 at 23:25:59ID: 19397993

I was hoping for solution at least like validating a credit card with the mod 10 algorithm to see if the number can be valid

that sounds like it would be better. where would I get a list of providers and their exchange numbers?

 

by: TheMaximumWeaselPosted on 2007-07-01 at 00:04:14ID: 19398040

google

Max

 

by: itcdrPosted on 2007-07-01 at 04:35:41ID: 19398473

I searched all over in google and couldn't fine one. can you help?

 

by: lherrouPosted on 2007-07-01 at 04:48:37ID: 19398486

You're not going to get a list of exchange numbers by which provider they belong to. You can get a list of area codes and perhaps of exchanges.

 

by: khota001Posted on 2007-08-01 at 08:24:46ID: 19609712

You can not tell the carrier from the number because of the number portability.. however you can definitely see if the number is valid..

You could compare it to list of area codes...eg
http://www.bennetyee.org/ucsd-pages/area.html

You could also get more info from FCC:
http://www.fcc.gov/Bureaus/Common_Carrier/Factsheets/areacode.html

20120131-EE-VQP-002

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