IMEI number lookup format

Client

IMEI number lookup searches often imply live databases. This page provides format lookup only: digit cleanup, Luhn, and TAC/serial breakdown in your browser—no GSMA TAC DB or carrier registration query.

Format lookup vs database lookup

Database lookups answer registration and status questions. Format lookup answers whether digits are plausible and how they split—run this first, then authorized status tools if needed.

Privacy: digits are parsed only in your browser—no carrier or GSMA lookup, no upload. Treat device identifiers like any sensitive paste on shared machines.
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A 15-digit IMEI is commonly described as eight-digit TAC + six-digit serial + Luhn check digit; the trailing digit should satisfy ISO/IEC 7812 mod 10 on the full string—same arithmetic as debit/credit PAN checks. A 16-digit IMEISVappends two software version digits instead of exposing the standalone check position; carriers may still relate it to IMEI numbering but this page stops at segmentation and does not certify assignment.

Result

Passes Luhn mod 10 on the 15-digit string.

  • TAC (8): 35693803
  • Serial (6): 564380
  • Check (1): 9

Common use cases

  • Parse IMEI structure for documentation and training slides.
  • Compare TAC prefix across a batch without external APIs.
  • Pre-check digits before manual lookup in authorized OEM tools.

Common mistakes to avoid

  • Expecting brand/model name from format lookup

    Live TAC manufacturer tables are not queried here.

  • Using lookup format for blacklist decisions

    Theft and blocklist need carrier channels—not segment split.

  • Truncating IMEISV to force 15-digit lookup

    Use 16-digit IMEISV parsing when the field is IMEISV.

FAQ

Is this a live IMEI lookup?

No—local format and TAC/serial split only.

What is returned?

Luhn pass/fail, length class, TAC block, serial segment, check digit.

Can I lookup multiple IMEIs?

Yes—bulk paste one per line.

Common search terms

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

  • imei checker online validate luhn
  • gsm imei check digit calculator browser
  • imeisv split tac serial software version
  • 15 digit imei validity check local
  • calculate imei check digit from 14 digits
  • free imei checker online
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  • imei luhn check browser
  • android imei check format
  • iphone imei validator local

More tools

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