imsi & imei analyzer
Decode International Mobile Subscriber Identity (IMSI) and validate International Mobile Equipment Identity (IMEI) identifiers.
mobile identity analyzer
Select a decoding mode and enter the identifier for verification
waiting for input
Enter an IMSI or IMEI to begin deep analysis
plmn registry lookup
imei batch audit
identifier protocols
imsi (subscriber identity)
The IMSI is a unique 15-digit number stored in the SIM card. It is used to identify the user on cellular networks (GSM, UMTS, LTE, 5G).
imei (equipment identity)
A 15-digit code used to identify the physical device (handset). It is used to stop stolen phones and track hardware specifications.
practical security tips
Privacy Protection
Avoid sharing your full IMSI or IMEI on public forums; it can be used for unauthorized tracking or device cloning.
Luhn Check
Standard IMEIs must pass the Luhn mod-10 check digit verification to be considered syntactically valid.
Device Blacklisting
Carrier databases (CEIR) use the IMEI to block network access to stolen or blacklisted equipment.
SIM Swap Attacks
IMSI security is critical. Attacks like IMSI Catchers or SIM Swaps target the subscriber identity rather than the device hardware.
Use the *#06# dialer code on most mobile devices to retrieve your primary IMEI instantly for verification.