1) Click on https://www.npci.org.in/what-we-do/netc-fastag/check-your-netc-fastag-status
2) Enter you Vehicle Registration Number (VRN)/ NETC FASTag Id
3) Enter Captcha and then click on submit.
Kindly check the issue date of FASTag(s), the latest issued tags will be used for toll payments, any other tags should be closed with respective issuer bank/organization.