diff --git a/api-js/src/types/base/__tests__/domain.test.js b/api-js/src/types/base/__tests__/domain.test.js
index ed1f193dfc..708fba88e2 100644
--- a/api-js/src/types/base/__tests__/domain.test.js
+++ b/api-js/src/types/base/__tests__/domain.test.js
@@ -389,7 +389,11 @@ describe('given the domain object', () => {
                 },
               },
             ),
-          ).resolves.toEqual({ endDate: '2020-01-01', startDate: '2020-01-01' })
+          ).resolves.toEqual({
+            endDate: '2020-01-01',
+            startDate: '2020-01-01',
+            domainKey: domainOne._key,
+          })
         })
       })
       describe('user does not have domain ownership permission', () => {
@@ -530,19 +534,71 @@ describe('given the domain object', () => {
           }
 
           const expectedResult = [
-            { endDate: '2019-01-31', startDate: '2019-01-01' },
-            { endDate: '2019-02-28', startDate: '2019-02-01' },
-            { endDate: '2019-03-31', startDate: '2019-03-01' },
-            { endDate: '2019-04-30', startDate: '2019-04-01' },
-            { endDate: '2019-01-31', startDate: '2019-05-01' },
-            { endDate: '2019-06-30', startDate: '2019-06-01' },
-            { endDate: '2019-07-31', startDate: '2019-07-01' },
-            { endDate: '2019-08-31', startDate: '2019-08-01' },
-            { endDate: '2019-09-30', startDate: '2019-09-01' },
-            { endDate: '2019-10-31', startDate: '2019-10-01' },
-            { endDate: '2019-11-30', startDate: '2019-11-01' },
-            { endDate: '2019-12-31', startDate: '2019-12-01' },
-            { endDate: '2020-01-31', startDate: '2020-01-01' },
+            {
+              endDate: '2019-01-31',
+              startDate: '2019-01-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-02-28',
+              startDate: '2019-02-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-03-31',
+              startDate: '2019-03-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-04-30',
+              startDate: '2019-04-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-01-31',
+              startDate: '2019-05-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-06-30',
+              startDate: '2019-06-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-07-31',
+              startDate: '2019-07-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-08-31',
+              startDate: '2019-08-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-09-30',
+              startDate: '2019-09-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-10-31',
+              startDate: '2019-10-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-11-30',
+              startDate: '2019-11-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2019-12-31',
+              startDate: '2019-12-01',
+              domainKey: domainOne._key,
+            },
+            {
+              endDate: '2020-01-31',
+              startDate: '2020-01-01',
+              domainKey: domainOne._key,
+            },
           ]
 
           await expect(
diff --git a/api-js/src/types/base/dmarc-report/__tests__/period.test.js b/api-js/src/types/base/dmarc-report/__tests__/period.test.js
index cc185cf379..a3e8454c1d 100644
--- a/api-js/src/types/base/dmarc-report/__tests__/period.test.js
+++ b/api-js/src/types/base/dmarc-report/__tests__/period.test.js
@@ -1,14 +1,25 @@
+const { DB_PASS: rootPass, DB_URL: url } = process.env
+
+const { ArangoTools, dbNameFromFile } = require('arango-tools')
 const moment = require('moment')
 
+const { makeMigrations } = require('../../../../../migrations')
 const { periodType } = require('../period')
 const { detailTablesType } = require('../detail-tables')
 const { categoryTotalsType } = require('../category-totals')
 const { categoryPercentagesType } = require('../category-percentages')
 const { PeriodEnums } = require('../../../../enums')
-const { Year } = require('../../../../scalars')
+const { Year, Domain } = require('../../../../scalars')
+const { domainLoaderByKey } = require('../../../../loaders')
 
 describe('testing the period gql object', () => {
   describe('testing the field definitions', () => {
+    it('has a domain field', () => {
+      const demoType = periodType.getFields()
+
+      expect(demoType).toHaveProperty('domain')
+      expect(demoType.domain.type).toMatchObject(Domain)
+    })
     it('has a month field', () => {
       const demoType = periodType.getFields()
 
@@ -44,6 +55,42 @@ describe('testing the period gql object', () => {
   })
 
   describe('testing the field resolvers', () => {
+    describe('testing the domain resolver', () => {
+      let query, drop, truncate, migrate, collections, domain
+
+      beforeAll(async () => {
+        ;({ migrate } = await ArangoTools({ rootPass, url }))
+        ;({ query, drop, truncate, collections } = await migrate(
+          makeMigrations({
+            databaseName: dbNameFromFile(__filename),
+            rootPass,
+          }),
+        ))
+
+        domain = await collections.domains.save({
+          domain: 'test.domain.gc.ca',
+        })
+      })
+
+      afterAll(async () => {
+        await truncate()
+        await drop()
+      })
+
+      it('returns the resolved field', async () => {
+        const demoType = periodType.getFields()
+
+        const loader = domainLoaderByKey(query, '1', {})
+
+        await expect(
+          demoType.domain.resolve(
+            { domainKey: domain._key },
+            {},
+            { loaders: { domainLoaderByKey: loader } },
+          ),
+        ).resolves.toEqual('test.domain.gc.ca')
+      })
+    })
     describe('testing the month resolver', () => {
       it('returns the resolved value', () => {
         const demoType = periodType.getFields()
diff --git a/api-js/src/types/base/dmarc-report/period.js b/api-js/src/types/base/dmarc-report/period.js
index dbfbb0c0e7..c1b0416e7d 100644
--- a/api-js/src/types/base/dmarc-report/period.js
+++ b/api-js/src/types/base/dmarc-report/period.js
@@ -3,13 +3,25 @@ const { categoryPercentagesType } = require('./category-percentages')
 const { categoryTotalsType } = require('./category-totals')
 const { detailTablesType } = require('./detail-tables')
 const { PeriodEnums } = require('../../../enums')
-const { Year } = require('../../../scalars')
+const { Domain, Year } = require('../../../scalars')
 
 const periodType = new GraphQLObjectType({
   name: 'Period',
   description:
     'Object that contains information for each data collection period.',
   fields: () => ({
+    domain: {
+      type: Domain,
+      description: 'The domain that the data in this period belongs to.',
+      resolve: async (
+        { domainKey },
+        _args,
+        { loaders: { domainLoaderByKey } },
+      ) => {
+        const domain = await domainLoaderByKey.load(domainKey)
+        return domain.domain
+      },
+    },
     month: {
       type: PeriodEnums,
       description: 'Start date of data collection.',
diff --git a/api-js/src/types/base/index.js b/api-js/src/types/base/index.js
index 7b128b157c..b7bc700d35 100644
--- a/api-js/src/types/base/index.js
+++ b/api-js/src/types/base/index.js
@@ -118,6 +118,7 @@ const domainType = new GraphQLObjectType({
         const {
           data: { dmarcSummaryByPeriod },
         } = await dmarcReportLoader({ info, domain, userKey, tokenize })
+        dmarcSummaryByPeriod.domainKey = _key
         return dmarcSummaryByPeriod
       },
     },
@@ -151,7 +152,10 @@ const domainType = new GraphQLObjectType({
         const {
           data: { yearlyDmarcSummaries },
         } = await dmarcReportLoader({ info, domain, userKey, tokenize })
-        return yearlyDmarcSummaries
+        return yearlyDmarcSummaries.map((report) => {
+          report.domainKey = _key
+          return report
+        })
       },
     },
   }),