diff --git a/Gemfile b/Gemfile
index 26294b04e..b3882e792 100644
--- a/Gemfile
+++ b/Gemfile
@@ -37,7 +37,7 @@ gem 'grape'
 
 # registry specfic
 gem 'isikukood' # for EE-id validation
-gem 'simpleidn', '0.0.7' # For punycode
+gem 'simpleidn', '0.0.9' # For punycode
 gem 'money-rails'
 gem 'data_migrate'
 gem 'whenever', '0.9.4', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 4dd4bd57c..23aa90a51 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -382,7 +382,7 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    simpleidn (0.0.7)
+    simpleidn (0.0.9)
     sinatra (2.0.7)
       mustermann (~> 1.0)
       rack (~> 2.0)
@@ -491,7 +491,7 @@ DEPENDENCIES
   select2-rails (= 3.5.9.3)
   selectize-rails (= 0.12.1)
   simplecov
-  simpleidn (= 0.0.7)
+  simpleidn (= 0.0.9)
   uglifier
   validates_email_format_of (= 1.6.3)
   webdrivers
diff --git a/app/models/dns/domain_name.rb b/app/models/dns/domain_name.rb
index d2ca9fa50..e4dd24fa5 100644
--- a/app/models/dns/domain_name.rb
+++ b/app/models/dns/domain_name.rb
@@ -60,7 +60,8 @@ module DNS
     end
 
     def blocked?
-      BlockedDomain.where(name: name).any?
+      BlockedDomain.where(name: name).any? ||
+        BlockedDomain.where(name: SimpleIDN.to_unicode(name)).any?
     end
 
     def reserved?
diff --git a/test/fixtures/blocked_domains.yml b/test/fixtures/blocked_domains.yml
index 4bf0d0299..52c9beec2 100644
--- a/test/fixtures/blocked_domains.yml
+++ b/test/fixtures/blocked_domains.yml
@@ -1,2 +1,4 @@
 one:
   name: blocked.test
+idn:
+  name: blockedäöüõ.test
diff --git a/test/models/dns/domain_name_test.rb b/test/models/dns/domain_name_test.rb
index 5d0dd5386..bd83076bc 100644
--- a/test/models/dns/domain_name_test.rb
+++ b/test/models/dns/domain_name_test.rb
@@ -131,7 +131,10 @@ class DNS::DomainNameTest < ActiveSupport::TestCase
 
   def test_blocked
     assert_equal 'blocked.test', blocked_domains(:one).name
+    assert_equal 'blockedäöüõ.test', blocked_domains(:idn).name
     assert DNS::DomainName.new('blocked.test').blocked?
+    assert DNS::DomainName.new('blockedäöüõ.test').blocked?
+    assert DNS::DomainName.new(SimpleIDN.to_ascii('blockedäöüõ.test')).blocked?
     assert_not DNS::DomainName.new('nonblocked .test').blocked?
   end