Finding cell phone providers

[ozdon]

I am trying to reverse engineer a website and have a question about some functionality that someone here may know a way around.  This website allows you to send bulk SMS messages based on just a cell phone number.

After some researching, (without using a SMS server) the easiest way to send a SMS message is to send it based on the cell phone providers email.  So for instance, if the number is from Verizon Wireless, you can simply send an email to 1112223333@vtext.com.  Well that is nice for just a verizon users, but I doubt that is feasible to try and figure out everyone's cell phone provider by shotguning sms messages to various providers.

Do you have any ideas on how to figure out the cell phone provider from just receiving an input of a cell phone number?  (ie 1112223333)

Thanks in advance.

[m0rdekai]

whitepages.com will usually tell you the provider of a cell phone...  or you could just call them up and social engineer it out of them.

[phattydoughboy]

www.fonefinder.net

[m0rdekai]

www.fonefinder.net

+1 leet

[rbcp]

I prefer http://www.localcallingguide.com over Fone Finder.  Fone Finder will only give you the primary carrier of an exchange.  But Local Calling Guide will tell you all of them.  For example, one exchange might include Qwest, T-Mobile and Metro PCS.  But Fone Finder would only tell you about Qwest.

Look at this link to see what I mean:

http://www.localcallingguide.com/lca_prefix.php?npa=818&nxx=251&x=&ocn=&region=&lata=&switch=&pastdays=0&nextdays=0