diff --git a/app/controllers/api/v1/registrant/domains_controller.rb b/app/controllers/api/v1/registrant/domains_controller.rb
index a416aaec0..4e5c8bb28 100644
--- a/app/controllers/api/v1/registrant/domains_controller.rb
+++ b/app/controllers/api/v1/registrant/domains_controller.rb
@@ -1,3 +1,5 @@
+require 'serializers/registrant_api/domain'
+
 module Api
   module V1
     module Registrant
@@ -17,7 +19,13 @@ module Api
           end
 
           @domains = associated_domains(current_registrant_user).limit(limit).offset(offset)
-          render json: @domains
+
+          serialized_domains = @domains.map do |item|
+            serializer = Serializers::RegistrantApi::Domain.new(item)
+            serializer.to_json
+          end
+
+          render json: serialized_domains
         end
 
         def show
@@ -25,7 +33,8 @@ module Api
           @domain = domain_pool.find_by(uuid: params[:uuid])
 
           if @domain
-            render json: @domain
+            serializer = Serializers::RegistrantApi::Domain.new(@domain)
+            render json: serializer.to_json
           else
             render json: { errors: [{ base: ['Domain not found'] }] }, status: :not_found
           end
diff --git a/doc/registrant-api/v1/domain.md b/doc/registrant-api/v1/domain.md
index 09495220d..f56bb6014 100644
--- a/doc/registrant-api/v1/domain.md
+++ b/doc/registrant-api/v1/domain.md
@@ -11,15 +11,6 @@ Returns domains of the current registrant.
 | ---------- | -------- | ----    | --------------    | -----------                |
 | limit      | false    | Integer | [1..200]          | How many domains to show   |
 | offset     | false    | Integer |                   | Domain number to start at  |
-| details    | false    | String  | ["true", "false"] | Whether to include details |
-
-#### Request
-```
-GET api/v1/registrant/domains?limit=1&details=true HTTP/1.1
-Accept: application/json
-Authorization: Bearer Z2l0bGFiOmdoeXQ5ZTRmdQ==
-Content-Type: application/json
-```
 
 #### Response
 ```
@@ -27,13 +18,11 @@ HTTP/1.1 200
 Content-Type: application/json
 
 {
-  "domains": [
+  [
     {
-      "uuid": "98d1083a-8863-4153-93e4-caee4a013535",
+      "id": "98d1083a-8863-4153-93e4-caee4a013535",
       "name": "domain0.ee",
-      "registrar_id": 2,
-      "registered_at": "2015-09-09T09:11:14.861Z",
-      "status": null,
+      "registrar": "Best Names",
       "valid_from": "2015-09-09T09:11:14.861Z",
       "valid_to": "2016-09-09T09:11:14.861Z",
       "registrant_id": 1,
@@ -53,23 +42,28 @@ Content-Type: application/json
       "delete_at": "2016-10-24T09:11:14.861Z",
       "registrant_verification_asked_at": null,
       "registrant_verification_token": null,
-      "pending_json": {
-      },
+      "locked_by_registrant_at": "2015-09-09T09:11:14.861Z",
+      "pending_json": {},
       "force_delete_at": null,
       "statuses": [
         "ok"
       ],
       "reserved": false,
-      "status_notes": {
-      },
-      "statuses_backup": [
-      ]
+      "status_notes": {},
+      "statuses_backup": []
     }
-  ],
-  "total_number_of_records": 2
+  ]
 }
 ```
 
+#### Request
+```
+GET api/v1/registrant/domains HTTP/1.1
+Accept: application/json
+Authorization: Bearer Z2l0bGFiOmdoeXQ5ZTRmdQ==
+Content-Type: application/json
+```
+
 ## GET api/v1/registrant/domains
 
 Returns domain names with offset.
@@ -77,7 +71,7 @@ Returns domain names with offset.
 
 #### Request
 ```
-GET api/v1/registrant/domains?offset=1 HTTP/1.1
+GET api/v1/registrant/domains?offset=1&limit=1 HTTP/1.1
 Accept: application/json
 Authorization: Bearer Z2l0bGFiOmdoeXQ5ZTRmdQ==
 Content-Type: application/json
@@ -89,10 +83,40 @@ HTTP/1.1 200
 Content-Type: application/json
 
 {
-  "domains": [
-    "domain1.ee"
-  ],
-  "total_number_of_records": 2
+  [
+    {
+      "id": "98d1083a-8863-4153-93e4-caee4a013535",
+      "name": "domain0.ee",
+      "registrar": "Best Names",
+      "valid_to": "2016-09-09T09:11:14.861Z",
+      "registrant_id": 1,
+      "transfer_code": "98oiewslkfkd",
+      "created_at": "2015-09-09T09:11:14.861Z",
+      "updated_at": "2015-09-09T09:11:14.860Z",
+      "name_dirty": "domain0.ee",
+      "name_puny": "domain0.ee",
+      "period": 1,
+      "period_unit": "y",
+      "creator_str": null,
+      "updator_str": null,
+      "legacy_id": null,
+      "legacy_registrar_id": null,
+      "legacy_registrant_id": null,
+      "outzone_at": "2016-09-24T09:11:14.861Z",
+      "delete_at": "2016-10-24T09:11:14.861Z",
+      "registrant_verification_asked_at": null,
+      "registrant_verification_token": null,
+      "locked_by_registrant_at": "2015-09-09T09:11:14.861Z",
+      "pending_json": {},
+      "force_delete_at": null,
+      "statuses": [
+        "ok"
+      ],
+      "reserved": false,
+      "status_notes": {},
+      "statuses_backup": []
+    }
+  ]
 }
 ```
 
@@ -116,12 +140,10 @@ HTTP/1.1 200
 Content-Type: application/json
 
 {
-  "uuid": "98d1083a-8863-4153-93e4-caee4a013535",
+  "id": "98d1083a-8863-4153-93e4-caee4a013535",
   "name": "domain0.ee",
-  "registrar_id": 2,
+  "registrar": "Best Names",
   "registered_at": "2015-09-09T09:11:14.861Z",
-  "status": null,
-  "valid_from": "2015-09-09T09:11:14.861Z",
   "valid_to": "2016-09-09T09:11:14.861Z",
   "registrant_id": 1,
   "transfer_code": "98oiewslkfkd",
@@ -140,6 +162,7 @@ Content-Type: application/json
   "delete_at": "2016-10-24T09:11:14.861Z",
   "registrant_verification_asked_at": null,
   "registrant_verification_token": null,
+  "locked_by_registrant_at": "2015-09-09T09:11:14.861Z",
   "pending_json": {},
   "force_delete_at": null,
   "statuses": [
diff --git a/test/integration/api/registrant/registrant_api_domains_test.rb b/test/integration/api/registrant/registrant_api_domains_test.rb
index 0764db3aa..3195514de 100644
--- a/test/integration/api/registrant/registrant_api_domains_test.rb
+++ b/test/integration/api/registrant/registrant_api_domains_test.rb
@@ -27,7 +27,12 @@ class RegistrantApiDomainsTest < ApplicationIntegrationTest
     assert_equal(200, response.status)
 
     domain = JSON.parse(response.body, symbolize_names: true)
+
     assert_equal('hospital.test', domain[:name])
+    assert_equal('5edda1a5-3548-41ee-8b65-6d60daf85a37', domain[:id])
+    assert_equal('Good Names', domain[:registrar])
+    assert_equal([], domain[:nameservers])
+    assert(domain.has_key?(:locked_by_registrant_at))
   end
 
   def test_get_non_existent_domain_details_by_uuid
@@ -45,6 +50,9 @@ class RegistrantApiDomainsTest < ApplicationIntegrationTest
     response_json = JSON.parse(response.body, symbolize_names: true)
     array_of_domain_names = response_json.map { |x| x[:name] }
     assert(array_of_domain_names.include?('hospital.test'))
+
+    array_of_domain_registrars = response_json.map { |x| x[:registrar] }
+    assert(array_of_domain_registrars.include?('Good Names'))
   end
 
   def test_root_accepts_limit_and_offset_parameters