How To Check Kaspersky Activation Code Validity Page
avp.com ADD LICENSE /CODE=XXXXX-XXXXX-XXXXX-XXXXX /VERIFYONLY Returns exit code 0 (valid) or non-zero with error description.
avp.com LICENSE STATUS Or to test a specific code: How To Check Kaspersky Activation Code Validity
Kaspersky Activation Code Checker (web). How To Check Kaspersky Activation Code Validity