MIN (Mobile Identification Number)
are numbers that uniquely identify mobiles working under TIA
standards for Cellular and PCS technologies.
IRM (International Roaming MIN) are
MIN with the following format: 0-XXX+6D or 1-XXX+6D. The IRM
concept was expanded in March 2004 to include MIN codes with the
format XXX-0+6D and XXX-1+6D. They are now also available for
assignment.
The 4 digit prefix of an IRM is allocated
by IFAST (International Forum
on ANSI-41 Standards Technology) that attempts to facilitate international roaming by
minimizing conflicts with North American MIN.
The last 6
digits of an IRM are allocated by the carrier.
IRM
Guidelines (V5.6) June 2013.
Note: In case of a discrepancy between the HTML and Word versions of
the IFAST IRM Guidelines, the Word version should be taken as
correct.
IFAST formats
for SID and IRM export files.
IRM
Expansion Presentation .
IRM Allocation Table. (Legacy queries still available).
IRM Application and Payment Form.
IFAST
Topic 3 with other IRM related documents.
IFAST,
IRMs and Number Portability.