SIM & eSIM tools
Every tool is reference-grade (each cites the governing spec) and runs entirely in your browser — no ICCID, IMSI, EID or key data is ever uploaded. Deep-linkable, EN, and free.
ICCID Parser / Generator
Validate & generate ICCIDs (Luhn), with the on-card EF_ICCID BCD nibble-swap view.
IMSI Parser
MCC / MNC / MSIN decode with the 2-vs-3-digit MNC ambiguity resolved and raw EF_IMSI decoding.
APDU Builder / Decoder
ISO 7816-4 command APDUs with a SIM/UICC layer — Case 1–4, CLA/INS, status words.
SIM File-System Reference
Interactive MF/DF/EF tree — FIDs, access conditions, SELECT chains, per-EF decoders.
eUICC EID Parser
Decode a 32-digit EID and finally separate EID from ICCID.
SGP.22 Activation-Code Decoder
Split and validate an eSIM LPA string field by field.
More on the roadmap
SW1/SW2 status-word lookup, ATR parser, OTA (03.48 / TS 102 225) secured-packet decoder, Milenage test-vector tool, MSISDN formatter, SIM profile viewer and the SAIP eUICC profile-package viewer. Want one prioritised? Tell us.