code: def destroy_dns(app='', env='dev', **_):
      
      client = boto3.Session(profile_name=env).client('route53')
  
      generated = get_details(app=app, env=env)
      record = generated.dns_elb()
  
      zone_ids = get_dns_zone_ids(env=env, facing='external')
  
      for zone_id in zone_ids:
          record_sets = client.list_resource_record_sets(
              HostedZoneId=zone_id, StartRecordName=record, StartRecordType='CNAME', MaxItems='1')
  
          for found_record in record_sets['ResourceRecordSets']:
              assert destroy_record(client=client, found_record=found_record, record=record, zone_id=zone_id)
  
      return True
docs: Destroy DNS records.
  
      Args:
          app (str): Spinnaker Application name.
          env (str): Deployment environment.
          regions (str): AWS region.
  
      Returns:
          bool: True upon successful completion.