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  2. Mobile identification number - Wikipedia

    en.wikipedia.org/wiki/Mobile_identification_number

    The mobile identification number (MIN) is a number that is derived from the 10-digit directory telephone number assigned to a mobile station. The rules for deriving the MIN from the 10-digit telephone number are given in the IS-95 standard. MIN1 is the first or least significant 24 binary digits of the MIN.

  3. International Mobile Equipment Identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    To make blocklisting effective, the IMEI number is supposed to be difficult to change. However, a phone's IMEI may be easy to change with special tools. [10] [better source needed] In addition, IMEI is an un-authenticated mobile identifier (as opposed to IMSI, which is routinely authenticated by home and serving mobile networks.) Using a ...

  4. International mobile subscriber identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    The remaining digits are the mobile subscription identification number (MSIN) within the network's customer base, usually 9 to 10 digits long, depending on the length of the MNC. The IMSI conforms to the ITU E.212 numbering standard.

  5. Automatic number identification - Wikipedia

    en.wikipedia.org/.../Automatic_number_identification

    Automatic number identification (ANI) [1] [2] is a feature of a telecommunications network for automatically determining the origination telephone number on toll calls for billing purposes. Automatic number identification was originally created by the American Telephone and Telegraph Company (AT&T) for long distance service in the Bell System ...

  6. Caller ID - Wikipedia

    en.wikipedia.org/wiki/Caller_ID

    Caller ID service, which is also known by similar terms such as CID, calling line identification (CLI, CLID), calling number delivery (CND), calling number identification (CNID), calling line identification presentation (CLIP), and call display, does not work with Centrex, [6] a phone system widely used by corporations that allows outside ...

  7. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

    However, the GSM Phase 1 [20] defined the ICCID length as an opaque data field, 10 octets (20 digits) in length, whose structure is specific to a mobile network operator. The number is composed of three subparts: Issuer identification number (IIN) Check digit; Individual account identification; Their format is as follows. Issuer identification ...

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