Invalid ICCID check

Client

Invalid ICCID check helps spot length or Luhn failures before rejecting a shipment row.

Privacy: digits are evaluated only inside your browser. There is no carrier, GSMA, or SM-DP+ query—format math only. Treat SIM identifiers like any sensitive operational paste.
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The ITU‑T E.118 layout follows ISO/IEC 7812 for card identifiers: a Major Industry Identifier (telecom ICCIDs usually start with 89), an issuer/country/account block, then a trailing Luhn mod‑10 check digit using the same doubling rule as many payment PAN validators. Printed cards commonly show 18–22 digits; issuers pin one length profile per range.

Result

Passes Luhn mod 10 on the full 19-digit string.

  • MII (first 2): 89
  • Issuer / account core (between MII and check): 3530012345678901
  • Check digit (last): 1

Common use cases

  • Debug failed rows before rejecting shipments.
  • Confirm invalid iccid check expectations before trusting inventory or activation CSV rows.
  • Paste digits locally—no carrier or GSMA directory lookup.

Common mistakes to avoid

  • Treating format pass as live service status

    Luhn and MII hints do not prove activation, billing, or HLR state.

  • Discarding entire batches for one bad digit.

FAQ

What makes an ICCID invalid?

Wrong length, non-digits after cleanup, or Luhn mod-10 failure.

Is my ICCID sent to Toolcore?

No—all checks run in your browser tab only.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

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More tools

Related utilities you can open in another tab—mostly client-side.