diff --git a/lib/sf/account.rb b/lib/sf/account.rb
index f4b0c5d..21b2339 100644
--- a/lib/sf/account.rb
+++ b/lib/sf/account.rb
@@ -130,6 +130,22 @@ def self.active_inc_parts(service_name)
     build_collection sobjects.map(&:Supporting_Institution__r) unless sobjects.blank?
   end
 
+  def self.cert_service_subscribers
+    today = Date.today.strftime('%Y-%m-%d')
+    sobjects = Sf.client.query("select
+        Supporting_Institution__r.Id,
+        Supporting_Institution__r.Name,
+        Supporting_Institution__r.InCommon_Website_Name__c,
+        Supporting_Institution__r.InCommon_Participant_Type__c,
+        Supporting_Institution__r.InCommon_Weblink__c
+        from Service_Institution__c where Service__r.Name = \'InCommon Certificate Service\'
+                               and (Service_End_Date__c = null or Service_End_Date__c > #{today})
+                               and (Service_Start_Date__c = null or Service_Start_Date__c < #{today})
+                               and (Type_of_Support__c = 'Subscriber' or Type_of_Support__c = 'Subscriber Parent')
+                               and Do_Not_Publish__c <> true")
+    build_collection sobjects.map(&:Supporting_Institution__r) unless sobjects.blank?
+  end
+
   private
 
   def subscriptions