Hello Hemant
The Route Target (RT) is not included in the VPNv4 address. The VPNv4 address is a combination of a 64-bit Route Distinguisher (RD) and a 32-bit IPv4 address, making it a total of 96 bits. The Route Target is a separate attribute used in BGP (Border Gateway Protocol) for VPN membership information. It is not part of the VPNv4 address itself. You can see more about RDs and RTs and how they work with MP-BGP in this lesson.
I hope this has been helpful!
Laz