All of these fields are defined as hexadecimal values with the following valid range.
In the case of MEIDs for terminals designed to comply with both 3GPP and 3GPP2 specifications (i.e., multimode terminals), all these fields are defined as decimal values with the following valid range:
MEID Lookup tool https://www.tiameid.org/lookup ,also used by Law Enforcement & Regulatory agencies
The MEID assignment process is compliant with the MOBILE EQUIPMENT IDENTIFIER (MEID) GHA (Global Hexadecimal Administrator). The latest Assignment Guidelines and Procedures can be found HERE.
There is a fee for filing MEID application assignments. The fee chart is available HERE . Applicants are required to request MEID assignments from the GHA by completing and transmitting FORM A. Once the form is received, the GHA will inform the applicant of the required fee. Assignments will NOT be processed until payment has been received.