ICCID
The ICCID is the serial number on a SIM or eSIM profile. It names the card, rather than the subscription.
Definitions only — a term explained here is not a service we sell.
The integrated circuit card identifier names the card or eSIM profile container, not the subscription. A swap changes the mapping between ICCID, IMSI and number.
Logistics tracks cards by ICCID and subscriptions by IMSI; the lists reconcile at activation.
ICCID structure
Decoded in your browser. Nothing is uploaded.
- Industry identifier
- 89
- Calling code
- +44
- Issuer and account
- 11006123456789
- Check digit
- 9
- Check
- Valid
Text description
The example is synthetic. The leading 89 marks telecom, then the +44 calling code, the issuer and account digits and the final check digit. The figure applies the Luhn check and marks the result.
Structure and checks
ITU-T E.118 sets the structure: a major industry identifier (89 for telecom), a country code, an issuer identifier, an individual account identifier and a check digit. A physical SIM has one ICCID; an eSIM profile has its own, separate from the EID. The ICCID is up to 20 digits; 19 plus a Luhn check digit is common, and some systems strip the digit, so compare the full string. Validate the prefix, length and digit on import, and record the ICCID returned by an eSIM download. The four numbers explainer compares it with the IMSI, IMEI and MSISDN.