AWS SDK for .NET Documentation
SubnetIPv4CidrBlock Property
AmazonAmazon.EC2.UtilNetworkInterfaceSubnetIPv4CidrBlock Did this page help you?   Yes   No    Tell us about it...
The CIDR block of the Amazon EC2-VPC subnet in which the interface resides.
Declaration Syntax
C#
public string SubnetIPv4CidrBlock { get; }
Remarks
Returned only for Amazon EC2 instances launched into a VPC.

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)