diff --git a/app/models/blocked_domain.rb b/app/models/blocked_domain.rb
index 079926512..9f2b62aee 100644
--- a/app/models/blocked_domain.rb
+++ b/app/models/blocked_domain.rb
@@ -19,6 +19,8 @@ class BlockedDomain < ActiveRecord::Base
   end
 
   def generate_data
+    next if Domain.where(name: name).any?
+
     @json = generate_json
     @body = generate_body
     update_whois_server
diff --git a/app/models/reserved_domain.rb b/app/models/reserved_domain.rb
index d477f2524..4695b0bcd 100644
--- a/app/models/reserved_domain.rb
+++ b/app/models/reserved_domain.rb
@@ -30,6 +30,8 @@ class ReservedDomain < ActiveRecord::Base
   end
 
   def generate_data
+    next if Domain.where(name: name).any?
+
     @json = generate_json
     @body = generate_body
     update_whois_server