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Subscriber identity analysis utility for decoding International Mobile Subscriber Identity (IMSI) values, extracting MCC, MNC, and MSIN fields, and identifying the home operator.
The decoder uses the ITU-T E.212 MCC registry and operator MNC assignments to map the first 5–6 digits of an IMSI to a PLMN, extracting the remaining digits as the operator-assigned MSIN.
Built on 3GPP Technical Specifications, ensuring accuracy for production deployments and security audits.
Calculations specifically designed to identify protocol vulnerabilities and signaling misconfigurations.
Essential for roaming troubleshooting, SIM provisioning validation, and security research. IMSI structure knowledge underpins protection against IMSI catchers and identity privacy attacks (SUPI concealment in 5G).
Edge-V8 Isolate
Technical Audit
< 50ms (Global)
Secured by Auth0