ICCID check tool

Client

ICCID check tool searches want a bookmarkable page that validates serials without spreadsheets. Paste one ICCID or a multi-line batch—length guards, Luhn, and suggested check digit run entirely in your browser.

Tool vs carrier portal

Portals activate or assign lines. This tool only confirms the serial string is structurally valid before you paste elsewhere.

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

  • Replace one-off Excel macros in warehouse QA checklists.
  • Give support agents a single HTTPS tool instead of ad-hoc online forms.
  • Pre-validate CSV extracts before ERP or MDM import.

Common mistakes to avoid

  • Expecting the tool to query carrier HLR

    Format math only—no live network or GSMA directory.

  • Uploading SIM files to unknown websites

    Paste columns here—digits stay client-side.

  • Skipping batch mode on manifest reviews

    One serial per line catches more errors before dock close.

FAQ

What does this ICCID check tool do?

Digit cleanup, 18–22 length bounds, Luhn mod-10, MII prefix readout.

Is the ICCID check tool free?

Yes—no account required; validation runs locally.

Can agents link to prefilled checks?

Use Copy prefilled link on the tool—only share in private channels.

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.