Hello, I work in a legal compliance center for a major U.S. Cell phone
carrier.  One problem that we encounter is that Law enforcement only
has limited information
when trying to track someone via their cell phone.  One piece of
information is an ICCID (Integrated Circuit Card ID) which is a
computer Chip that is placed inside a GSM Phone.  The first 8 digits
of this number are uniqe to the carrier that is providing service with
that SIM card  The other piece of information is an IMSI
(International Mobile Subscriber Identity). The first 2 numbers of
this represent a country code and the next 3 numbers represent what
carrier provides service.  The last 10 numbers are unique  to the
individual subsciber.  With all that in mind, my question is:  Is
there a listing on the web or any kind of database or publication that
would tell me what carrier owns certain ICCID's and IMSI's?  For
example something that says AT&T Wireless owns any ICCID that begins
with 89310380XXXXXXXX.  Some links that may help are
http://www.phonescoop.com/glossary/   for industry definition of terms
and other links on the main page.  Also
http://www.mobiledia.com/glossary/139.html may be helpful.  Other than
that I have run many google searches and could not find anything of
substance.  Thank you for you time and any help you can provide.

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Clarification of Question by flashgordon20-ga on 07 Dec 2004 21:51 PST

Just a quick note: The ICCID is the number located on a SIM Card.

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Clarification of Question by flashgordon20-ga on 08 Dec 2004 13:33 PST

I made a mistake:  in the IMSI the 1st 3 numbers are the country code
and the next 2 numbers are the carrier code followed by the last 10
digits which is the internal network code that is different for each
subscriber.  Thank you