E.118 is an

international standard An international standard is a technical standard developed by one or more international standards organizations. International standards are available for consideration and use worldwide. The most prominent such organization is the International O ...

that defines the international telecommunication charge card, for use in payphones. It also defines the Integrated Circuit Card Identifier ( ICCID), which is used in

Subscriber Identity Module A typical SIM card (mini-SIM with micro-SIM cutout)A SIM card or SIM (subscriber identity module) is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are u ...

s (SIMs, including SIM cards and

eSIM An eSIM (embedded SIM) is a form of SIM card that is embedded directly into a device as software installed onto a eUICC chip. First released in March 2016, eSIM is a global specification by the GSMA that enables remote SIM provisioning; end ...

s). The standard was first developed in 1988 by what became the Standardization Sector of the

International Telecommunication Union The International Telecommunication Union (ITU)In the other common languages of the ITU: * * is a list of specialized agencies of the United Nations, specialized agency of the United Nations responsible for many matters related to information ...

(

ITU-T The International Telecommunication Union Telecommunication Standardization Sector (ITU-T) is one of the three Sectors (branches) of the International Telecommunication Union (ITU). It is responsible for coordinating Standardization, standards fo ...

) with several revisions having been published since then.

History

The E.118 standard was first developed by the precursor to the

, International Telegraph and Telephone Consultative Committee (CCITT, in the French acronym) and it was adopted by its governing body the World Telecommunication Standardization Conference (WTSC), as its 1988 meeting. Since then it has been revised several times by Study Group 1, most recently in 1996.

ICCID

The Integrated Circuit Card Identifier (ICCID) is a number to international identify callers, called a 'Primary Account Number', used i.a. in

SIM card A typical SIM card (mini-SIM with micro-SIM cutout)A SIM card or SIM (subscriber identity module) is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are u ...

s including

cards. Its layout is based on

ISO/IEC 7812 ISO/IEC 7812 ''Identification cards – Identification of issuers'' is an international standard published jointly by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It specifies "a ...

. The ICCID is made up of: Issuer identification number (IIN) Maximum of seven digits: * Major industry identifier (MII), 2 fixed digits, 89 for telecommunication purposes. *

Country calling code Telephone country codes are telephone number prefixes for reaching subscribers in foreign countries or areas by international direct dialing (IDD). Country codes are defined by the International Telecommunication Union (ITU) in ITU-T standards ...

, 1 to 3 digits, as defined by

recommendation E.164. **

North American Numbering Plan The North American Numbering Plan (NANP) is an integrated telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1, World Numbering Zone ...

countries use 1 **

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

uses 7 **

Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a landlocked country primarily in Central Asia, with a European Kazakhstan, small portion in Eastern Europe. It borders Russia to the Kazakhstan–Russia border, north and west, China to th ...

uses 997, even though it also uses the calling code +7 * Issuer identifier, 1–4 digits (together Country calling code and Issuer Identifier is no more than 5 digits). ** Often identical to the

Mobile Network Code The ITU-T Recommendation E.212 defines mobile country codes (MCC) as well as mobile network codes (MNC). The mobile country code consists of three decimal digits and the mobile network code consists of two or three decimal digits (for example: M ...

(MNC). Individual account identification * Individual account identification number. Its length is variable, but every number under one IIN has the same length. ** Often identical to the

Mobile Subscription Identification Number The mobile identification number (MIN) or mobile subscription identification number (MSIN) refers to the 10- digit unique number that a wireless carrier uses to identify a mobile phone, which is the last part of the international mobile subscriber ...

(MSIN). Check digit * Single digit calculated from the other digits using the

Luhn algorithm The Luhn algorithm or Luhn formula (creator: IBM scientist Hans Peter Luhn), also known as the " modulus 10" or "mod 10" algorithm, is a simple check digit formula used to validate a variety of identification numbers. The algorithm is in the pub ...

. E.118 stipulates that the ITU-T updates a list of all current internationally assigned IIN codes in its Operational Bulletins which are published twice a month.

References

{{reflist ITU-T E Series Recommendations