What are the different IP Classs Addresses ?

Class 	Leading bits 	Start 			End 		Default Subnet Mask
A 	0 		0.0.0.0 	126.255.255.255 	255.0.0.0
B 	10 		128.0.0.0 	191.255.255.255 	255.255.0.0
C 	110 		192.0.0.0 	223.255.255.255 	255.255.255.0
D 	1110 		224.0.0.0 	239.255.255.255 		
E 	1111 		240.0.0.0 	255.255.255.0