diff --git a/Gemfile b/Gemfile
index d8ed78475fd..03ddced4f21 100644
--- a/Gemfile
+++ b/Gemfile
@@ -21,6 +21,7 @@ gem 'hashie'
 gem 'hiredis'
 gem 'http_accept_language'
 gem 'httparty'
+gem 'identity-hostdata', github: '18F/identity-hostdata', branch: 'master'
 gem 'json-jwt'
 gem 'lograge'
 gem 'net-sftp'
diff --git a/Gemfile.lock b/Gemfile.lock
index de1fe741916..d0c1b8e57d3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,6 +11,13 @@ GIT
       logger
       savon
 
+GIT
+  remote: https://github.com/18F/identity-hostdata.git
+  revision: b439d933afd8b1be0c89b3d76bb76ac73c0797cf
+  branch: master
+  specs:
+    identity-hostdata (0.2.0)
+
 GIT
   remote: https://github.com/18F/identity-proofer-gem.git
   revision: b25f4f40e6b61fc9f586d870e5aaa90f1449c5d9
@@ -701,6 +708,7 @@ DEPENDENCIES
   http_accept_language
   httparty
   i18n-tasks
+  identity-hostdata!
   json-jwt
   lograge
   mandrill_dm
diff --git a/config/service_providers.yml b/config/service_providers.yml
index 9381036961b..6a9115cdad8 100644
--- a/config/service_providers.yml
+++ b/config/service_providers.yml
@@ -149,98 +149,29 @@ production:
     attribute_bundle:
       - email
 
-  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:dev':
-    acs_url: 'https://sp-sinatra.dev.login.gov/consume'
-    assertion_consumer_logout_service_url: 'https://sp-sinatra.dev.login.gov/slo_logout'
-    sp_initiated_login_url: 'https://sp-sinatra.dev.login.gov/test/saml'
+  <% if LoginGov::Hostdata.in_datacenter? %>
+  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:<%= LoginGov::Hostdata.env %>':
+    acs_url: 'https://sp-sinatra.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/consume'
+    assertion_consumer_logout_service_url: 'https://sp-sinatra.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/slo_logout'
+    sp_initiated_login_url: 'https://sp-sinatra.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/test/saml'
     block_encryption: 'aes256-cbc'
     cert: 'sp_sinatra_demo'
     attribute_bundle:
       - email
 
-  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:demo':
-    acs_url: 'https://sp-sinatra.demo.login.gov/consume'
-    assertion_consumer_logout_service_url: 'https://sp-sinatra.demo.login.gov/slo_logout'
-    sp_initiated_login_url: 'https://sp-sinatra.demo.login.gov/test/saml'
-    block_encryption: 'aes256-cbc'
-    cert: 'sp_sinatra_demo'
-    attribute_bundle:
-      - email
-
-  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:pt':
-    acs_url: 'https://sp-sinatra.pt.login.gov/consume'
-    assertion_consumer_logout_service_url: 'https://sp-sinatra.pt.login.gov/slo_logout'
-    sp_initiated_login_url: 'https://sp-sinatra.pt.login.gov/test/saml'
-    block_encryption: 'aes256-cbc'
-    cert: 'sp_sinatra_demo'
-    attribute_bundle:
-      - email
-
-  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:rails-dev':
-    acs_url: 'https://sp.dev.login.gov/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://sp.dev.login.gov/auth/saml/logout'
-    sp_initiated_login_url: 'https://sp.dev.login.gov/login'
-    block_encryption: 'aes256-cbc'
-    cert: 'sp_rails_demo'
-    agency: 'A Gov Agency'
-    friendly_name: 'Demo SP Application'
-    logo: 'generic.svg'
-    return_to_sp_url: 'https://sp.dev.login.gov'
-    attribute_bundle:
-      - email
-
-  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:rails-demo':
-    acs_url: 'https://sp.demo.login.gov/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://sp.demo.login.gov/auth/saml/logout'
-    sp_initiated_login_url: 'https://sp.demo.login.gov/login'
-    block_encryption: 'aes256-cbc'
-    cert: 'sp_rails_demo'
-    agency: 'A Gov Agency'
-    friendly_name: 'Demo SP Application'
-    logo: 'generic.svg'
-    return_to_sp_url: 'https://sp.demo.login.gov'
-    attribute_bundle:
-      - email
-
-  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:rails-int':
-    acs_url: 'https://sp.int.login.gov/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://sp.int.login.gov/auth/saml/logout'
-    sp_initiated_login_url: 'https://sp.int.login.gov/login'
+  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:rails-<%= LoginGov::Hostdata.env %>':
+    acs_url: 'https://sp.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/auth/saml/callback'
+    assertion_consumer_logout_service_url: 'https://sp.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/auth/saml/logout'
+    sp_initiated_login_url: 'https://sp.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/login'
     block_encryption: 'aes256-cbc'
     cert: 'sp_rails_demo'
     agency: 'A Gov Agency'
     friendly_name: 'Demo SP Application'
     logo: 'generic.svg'
-    return_to_sp_url: 'https://sp.int.login.gov'
-    attribute_bundle:
-      - email
-
-
-  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:rails-pt':
-    acs_url: 'https://sp.pt.login.gov/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://sp.pt.login.gov/auth/saml/logout'
-    sp_initiated_login_url: 'https://sp.pt.login.gov/login'
-    block_encryption: 'aes256-cbc'
-    cert: 'sp_rails_demo'
-    agency: 'A Gov Agency'
-    friendly_name: 'Demo SP Application'
-    logo: 'generic.svg'
-    return_to_sp_url: 'https://sp.pt.login.gov'
-    attribute_bundle:
-      - email
-
-  'urn:gov:gsa:SAML:2.0.profiles:sp:sso:rails-qa':
-    acs_url: 'https://sp.qa.login.gov/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://sp.qa.login.gov/auth/saml/logout'
-    sp_initiated_login_url: 'https://sp.qa.login.gov/login'
-    block_encryption: 'aes256-cbc'
-    cert: 'sp_rails_demo'
-    agency: 'A Gov Agency'
-    friendly_name: 'Demo SP Application'
-    logo: 'generic.svg'
-    return_to_sp_url: 'https://sp.qa.login.gov'
+    return_to_sp_url: 'https://sp.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>'
     attribute_bundle:
       - email
+  <% end %>
 
 # Micro-purchase
   'urn:gov:gsa:SAML:2.0.profiles:sp:sso:localhost-micropurchase':
@@ -284,65 +215,19 @@ production:
       - email
 
   # Dashboard
-  'https://dashboard.demo.login.gov':
-    friendly_name: 'Dashboard'
-    agency: 'GSA'
-    logo: '18f.svg'
-    acs_url: 'https://dashboard.demo.login.gov/users/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://dashboard.demo.login.gov/users/auth/saml/logout'
-    sp_initiated_login_url: 'https://dashboard.demo.login.gov/users/auth/saml'
-    block_encryption: 'aes256-cbc'
-    cert: 'identity_dashboard_cert'
-    attribute_bundle:
-      - email
-
-  'https://dashboard.int.login.gov':
-    friendly_name: 'Dashboard'
-    agency: 'GSA'
-    logo: '18f.svg'
-    acs_url: 'https://dashboard.int.login.gov/users/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://dashboard.int.login.gov/users/auth/saml/logout'
-    sp_initiated_login_url: 'https://dashboard.int.login.gov/users/auth/saml'
-    block_encryption: 'aes256-cbc'
-    cert: 'identity_dashboard_cert'
-    attribute_bundle:
-      - email
-
-  'https://dashboard.pt.login.gov':
-    friendly_name: 'Dashboard'
-    agency: 'GSA'
-    logo: '18f.svg'
-    acs_url: 'https://dashboard.pt.login.gov/users/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://dashboard.pt.login.gov/users/auth/saml/logout'
-    sp_initiated_login_url: 'https://dashboard.pt.login.gov/users/auth/saml'
-    block_encryption: 'aes256-cbc'
-    cert: 'identity_dashboard_cert'
-    attribute_bundle:
-      - email
-
-  'https://dashboard.qa.login.gov':
-    friendly_name: 'Dashboard'
-    agency: 'GSA'
-    logo: '18f.svg'
-    acs_url: 'https://dashboard.qa.login.gov/users/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://dashboard.qa.login.gov/users/auth/saml/logout'
-    sp_initiated_login_url: 'https://dashboard.qa.login.gov/users/auth/saml'
-    block_encryption: 'aes256-cbc'
-    cert: 'identity_dashboard_cert'
-    attribute_bundle:
-      - email
-
-  'https://dashboard.dev.login.gov':
+  <% if LoginGov::Hostdata.in_datacenter? %>
+  'https://dashboard.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>':
     friendly_name: 'Dashboard'
     agency: 'GSA'
     logo: '18f.svg'
-    acs_url: 'https://dashboard.dev.login.gov/users/auth/saml/callback'
-    assertion_consumer_logout_service_url: 'https://dashboard.dev.login.gov/users/auth/saml/logout'
-    sp_initiated_login_url: 'https://dashboard.dev.login.gov/users/auth/saml'
+    acs_url: 'https://dashboard.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/users/auth/saml/callback'
+    assertion_consumer_logout_service_url: 'https://dashboard.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/users/auth/saml/logout'
+    sp_initiated_login_url: 'https://dashboard.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/users/auth/saml'
     block_encryption: 'aes256-cbc'
     cert: 'identity_dashboard_cert'
     attribute_bundle:
       - email
+  <% end %>
 
   'urn:gov:gsa:openidconnect:sp:sinatra':
     agency: 'GSA'
@@ -351,12 +236,9 @@ production:
     logo: '18f.svg'
     redirect_uris:
       - 'http://localhost:9292/'
-      - 'https://sp-oidc-sinatra.dev.login.gov/'
-      - 'https://sp-oidc-sinatra.dm.login.gov/'
-      - 'https://sp-oidc-sinatra.int.login.gov/'
-      - 'https://sp-oidc-sinatra.pt.login.gov/'
-      - 'https://sp-oidc-sinatra.qa.login.gov/'
-      - 'https://sp-oidc-sinatra.staging.login.gov/'
+      <% if LoginGov::Hostdata.in_datacenter? %>
+      - 'https://sp-oidc-sinatra.<%= LoginGov::Hostdata.env %>.<%= LoginGov::Hostdata.domain %>/'
+      <% end %>
 
   # CBP Jobs
   'urn:gov:dhs.cbp.jobs:openidconnect:cert':
diff --git a/db/seeds.rb b/db/seeds.rb
index 71e5d4f3c36..6445f22dd25 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -4,8 +4,8 @@
 end
 
 # add config/service_providers.yml
-service_providers = YAML.load_file(Rails.root.join('config', 'service_providers.yml')).
-                    fetch(Rails.env, {})
+content = ERB.new(Rails.root.join('config', 'service_providers.yml').read).result
+service_providers = YAML.load(content).fetch(Rails.env, {})
 
 service_providers.each do |issuer, config|
   next if Figaro.env.chef_env == 'prod' && config['allow_on_prod_chef_env'] != 'true'