diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index de1b82025..7fa5bb300 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -3,7 +3,8 @@ class ApplicationController < ActionController::API
   include Authenticable
   include CanCan::ControllerAdditions
   include ErrorSerializable
-  require 'facets/string/snakecase'
+  
+  require "facets/string/snakecase"
 
   # include helper module for caching infrequently changing resources
   include Cacheable
@@ -30,7 +31,7 @@ class ApplicationController < ActionController::API
   def set_jsonp_format
     if params[:callback] && request.get?
       self.response_body = "#{params[:callback]}(#{response.body})"
-      headers["Content-Type"] = 'application/javascript'
+      headers["Content-Type"] = "application/javascript"
     end
   end
 
@@ -43,9 +44,9 @@ def detect_crawler
 
   def set_consumer_header
     if current_user
-      response.headers['X-Credential-Username'] = current_user.uid
+      response.headers["X-Credential-Username"] = current_user.uid
     else
-      response.headers['X-Anonymous-Consumer'] = true
+      response.headers["X-Anonymous-Consumer"] = true
     end
   end
 
@@ -64,7 +65,7 @@ def authenticate_user_with_basic_auth!
     @user = authenticate_user!
 
     if !@user
-      request_http_basic_authentication(realm = ENV['REALM'])
+      request_http_basic_authentication(realm = ENV["REALM"])
     end
 
     @user
diff --git a/app/controllers/provider_prefixes_controller.rb b/app/controllers/provider_prefixes_controller.rb
index c8f4d6026..4ede5d688 100644
--- a/app/controllers/provider_prefixes_controller.rb
+++ b/app/controllers/provider_prefixes_controller.rb
@@ -10,6 +10,9 @@ def index
       collection = ProviderPrefix.where(id: params[:id])
     elsif params[:provider_id].present? && params[:prefix_id].present?
       collection = ProviderPrefix.joins(:provider, :prefix).where('allocator.symbol = ?', params[:provider_id]).where('prefix.prefix = ?', params[:prefix_id])
+    elsif params[:consortium_id].present?
+      providers = Provider.where('allocator.consortium_id = ?', params[:consortium_id])
+      collection = providers.present? ? ProviderPrefix.joins(:provider, :prefix).where('allocator.consortium_id = ?', params[:consortium_id]) : ProviderPrefix.none
     elsif params[:provider_id].present?
       provider = Provider.where('allocator.symbol = ?', params[:provider_id]).first
       collection = provider.present? ? provider.provider_prefixes.joins(:prefix) : ProviderPrefix.none
diff --git a/spec/requests/provider_prefixes_spec.rb b/spec/requests/provider_prefixes_spec.rb
index c2cb62546..d9593976c 100644
--- a/spec/requests/provider_prefixes_spec.rb
+++ b/spec/requests/provider_prefixes_spec.rb
@@ -1,11 +1,32 @@
 require 'rails_helper'
 
 describe "Provider Prefixes", type: :request   do
-  let!(:provider_prefixes)  { create_list(:provider_prefix, 5) }
+  let(:consortium) { create(:provider, role_name: "ROLE_CONSORTIUM") }
+  let(:provider) { create(:provider, consortium: consortium, role_name: "ROLE_CONSORTIUM_ORGANIZATION", password_input: "12345") }
+  let!(:provider_prefixes) { create_list(:provider_prefix, 3, provider: provider) }
+  let!(:provider_prefixes2) { create_list(:provider_prefix, 2) }
   let(:provider_prefix) { create(:provider_prefix) }
   let(:bearer) { User.generate_token(role_id: "staff_admin") }
   let(:headers) { {'HTTP_ACCEPT'=>'application/vnd.api+json', 'HTTP_AUTHORIZATION' => 'Bearer ' + bearer }}
 
+  describe "GET /provider-prefixes by consortium" do
+    it "returns provider-prefixes" do
+      get "/provider-prefixes?consortium-id=#{consortium.symbol.downcase}", nil, headers
+      puts last_response.body
+      expect(last_response.status).to eq(200)
+      expect(json["data"].size).to eq(3)
+    end
+  end
+
+  describe "GET /provider-prefixes by provider" do
+    it "returns provider-prefixes" do
+      get "/provider-prefixes?provider-id=#{provider.symbol.downcase}", nil, headers
+
+      expect(last_response.status).to eq(200)
+      expect(json["data"].size).to eq(3)
+    end
+  end
+
   describe 'GET /provider-prefixes' do
     it 'returns provider-prefixes' do
       get '/provider-prefixes', nil, headers