How does the GSMA eUICC Identity Scheme work?

Every eSIM is required to have a unique, persistent and secure eID number to identify an embedded or removable eUICC (the eSIM’s chip) – as defined by the GSMA eSIM Working Group in the SGP.29 standard.

The GSMA is the industry appointed First Level eID Assignment Authority, responsible for coordinating the issuance and use of the eUICC identification numbers.

Providing the first 5 digits of the eID

This means the GSMA eUICC Identity Scheme gives each eUICC manufacturer the 5-digit identity code that forms the first part of the 32-digit eID, as shown below. This 5-digit code can be applied to billions of eSIM devices, we call this 5-digit code as EIN.

The eUICC Identifier (EID) provides a unique global serial number for an eUICC. It has a fixed length of 32 digits, as indicated in the following diagram:

You can get the popular EINs from Known SGP.22 Consumer eUICCs.