AWS SDK for Ruby
Developer Guide

Getting Information about All Subscriptions in an Amazon SNS Topic

The following example lists the email addresses of the Amazon SNS subscriptions for the topic with the ARN arn:aws:sns:us-west-2:123456789:MyGroovyTopic in the us-west-2 region.

require 'aws-sdk-sns' # v2: require 'aws-sdk' sns = Aws::SNS::Resource.new(region: 'us-west-2') topic = sns.topic('arn:aws:sns:us-west-2:123456789:MyGroovyTopic') topic.subscriptions.each do |s| puts s.attributes['Endpoint'] end