diff --git a/package.json b/package.json
index 791533ba..aa590430 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "@types/humanize-duration": "^3.27.3",
     "@vercel/analytics": "^1.2.2",
     "clsx": "^1.1.1",
-    "coretime-utils": "^0.2.8",
+    "coretime-utils": "^0.3.2",
     "date-fns": "^3.3.1",
     "decimal.js": "^10.4.3",
     "humanize-duration": "^3.31.0",
@@ -67,4 +67,4 @@
     "typescript": "^4.7.4",
     "webpack": "^5.81.0"
   }
-}
+}
\ No newline at end of file
diff --git a/src/components/Modals/Interlace/index.tsx b/src/components/Modals/Interlace/index.tsx
index ffdb0af0..73a60729 100644
--- a/src/components/Modals/Interlace/index.tsx
+++ b/src/components/Modals/Interlace/index.tsx
@@ -10,7 +10,7 @@ import {
   Typography,
   useTheme,
 } from '@mui/material';
-import { CoreMask } from 'coretime-utils';
+import { maskFromBin, maskFromChunk, maskToBin } from 'coretime-utils';
 import { useEffect, useState } from 'react';
 
 import { ProgressButton, SimpleRegionCard } from '@/components/Elements';
@@ -45,7 +45,7 @@ export const InterlaceModal = ({
   const { toastError, toastSuccess, toastInfo } = useToast();
   const { fetchRegions } = useRegions();
 
-  const currentMask = regionMetadata.region.getMask().toBin();
+  const currentMask = maskToBin(regionMetadata.region.getMask());
   // Represents the first active bit in the bitmap.
   const oneStart = currentMask.indexOf('1');
   // Represents the last active bit in the bitmap.
@@ -55,12 +55,12 @@ export const InterlaceModal = ({
   const [working, setWorking] = useState(false);
   const [position, setPosition] = useState(oneStart);
 
-  const newMask = CoreMask.fromChunk(oneStart, position + 1).toBin();
+  const newMask = maskToBin(maskFromChunk(oneStart, position + 1));
 
   const onInterlace = async () => {
     if (!api || !activeAccount || !activeSigner) return;
 
-    const mask = CoreMask.fromBin(newMask).toRawHex();
+    const mask = maskFromBin(newMask);
 
     const txInterlace = api.tx.broker.interlace(
       regionMetadata.region.getOnChainRegionId(),
diff --git a/src/contexts/regions/index.tsx b/src/contexts/regions/index.tsx
index 27458187..b8950732 100644
--- a/src/contexts/regions/index.tsx
+++ b/src/contexts/regions/index.tsx
@@ -1,4 +1,9 @@
-import { CoreIndex, CoreMask, Region, RegionId } from 'coretime-utils';
+import {
+  CoreIndex,
+  getEncodedRegionId,
+  Region,
+  RegionId,
+} from 'coretime-utils';
 import React, {
   createContext,
   useCallback,
@@ -58,7 +63,7 @@ const RegionDataProvider = ({ children }: Props) => {
   const [loading, setLoading] = useState(false);
 
   const _getTaskFromWorkloadId = useCallback(
-    async (core: CoreIndex, mask: CoreMask): Promise<number | null> => {
+    async (core: CoreIndex, mask: string): Promise<number | null> => {
       const task = await fetchRegionWorkload(core, mask);
       return task;
     },
@@ -86,7 +91,10 @@ const RegionDataProvider = ({ children }: Props) => {
       )
         continue;
 
-      const rawId = region.getEncodedRegionId(coretimeApi).toString();
+      const rawId = getEncodedRegionId(
+        region.getRegionId(),
+        coretimeApi
+      ).toString();
       const location = RegionLocation.CORETIME_CHAIN;
 
       const name =
@@ -108,7 +116,7 @@ const RegionDataProvider = ({ children }: Props) => {
       _regions.push(
         RegionMetadata.construct(
           context,
-          region.getEncodedRegionId(coretimeApi),
+          getEncodedRegionId(region.getRegionId(), coretimeApi),
           region,
           name,
           location,
diff --git a/src/contexts/regions/native/index.ts b/src/contexts/regions/native/index.ts
index e23540a7..353048b3 100644
--- a/src/contexts/regions/native/index.ts
+++ b/src/contexts/regions/native/index.ts
@@ -1,5 +1,5 @@
 import { ApiPromise } from '@polkadot/api';
-import { CoreMask, Region, RegionId } from 'coretime-utils';
+import { Region, RegionId } from 'coretime-utils';
 
 import { parseHNString } from '@/utils/functions';
 
@@ -21,17 +21,13 @@ export const fetchRegions = async (
         const regionId = {
           begin: parseHNString(begin.toString()),
           core: parseHNString(core.toString()),
-          mask: new CoreMask(mask),
+          mask: mask,
         };
-        return new Region(
-          regionId,
-          {
-            end: parseHNString(end),
-            owner,
-            paid: paid ? parseHNString(paid) : null,
-          },
-          0
-        );
+        return new Region(regionId, {
+          end: parseHNString(end),
+          owner,
+          paid: paid ? parseHNString(paid) : null,
+        });
       })
       .filter((entry) => !!entry) as Array<Region>;
     return brokerRegions;
@@ -47,25 +43,17 @@ export const fetchRegion = async (
   if (!coretimeApi) return null;
 
   const record: any = (
-    await coretimeApi.query.broker.regions({
-      begin: regionId.begin,
-      core: regionId.core,
-      mask: regionId.mask.toRawHex(),
-    })
+    await coretimeApi.query.broker.regions(regionId)
   ).toHuman();
 
   if (record) {
     const { end, owner, paid } = record;
 
-    return new Region(
-      regionId,
-      {
-        end: parseHNString(end),
-        owner,
-        paid: paid ? parseHNString(paid) : null,
-      },
-      0
-    );
+    return new Region(regionId, {
+      end: parseHNString(end),
+      owner,
+      paid: paid ? parseHNString(paid) : null,
+    });
   } else {
     return null;
   }
diff --git a/src/contexts/tasks/index.tsx b/src/contexts/tasks/index.tsx
index 6f438b43..d98c8923 100644
--- a/src/contexts/tasks/index.tsx
+++ b/src/contexts/tasks/index.tsx
@@ -1,4 +1,4 @@
-import { CoreIndex, CoreMask, Region } from 'coretime-utils';
+import { CoreIndex, getEncodedRegionId } from 'coretime-utils';
 import React, { createContext, useContext, useEffect, useState } from 'react';
 
 import { parseHNString } from '@/utils/functions';
@@ -14,7 +14,7 @@ type Tasks = Record<string, Task>;
 interface TasksData {
   tasks: Array<TaskMetadata>;
   fetchWorkplan: () => Promise<Tasks>;
-  fetchRegionWorkload: (_core: CoreIndex, _mask: CoreMask) => Promise<Task>;
+  fetchRegionWorkload: (_core: CoreIndex, _mask: string) => Promise<Task>;
   loadTasksFromLocalStorage: () => void;
   addTask: (_task: TaskMetadata) => void;
 }
@@ -26,7 +26,7 @@ const defaultTasksData: TasksData = {
   },
   fetchRegionWorkload: async (
     _core: CoreIndex,
-    _mask: CoreMask
+    _mask: string
   ): Promise<Task> => {
     return null;
   },
@@ -74,16 +74,12 @@ const TaskDataProvider = ({ children }: Props) => {
           mask,
         } = record;
 
-        const region = new Region(
-          {
-            begin: parseHNString(begin.toString()),
-            core: parseHNString(core.toString()),
-            mask: new CoreMask(mask),
-          },
-          { end: 0, owner: '', paid: null },
-          0
-        );
-        tasks[region.getEncodedRegionId(coretimeApi).toString()] = taskId
+        const regionId = {
+          begin: parseHNString(begin.toString()),
+          core: parseHNString(core.toString()),
+          mask,
+        };
+        tasks[getEncodedRegionId(regionId, coretimeApi).toString()] = taskId
           ? parseHNString(taskId)
           : null;
       });
@@ -95,7 +91,7 @@ const TaskDataProvider = ({ children }: Props) => {
   // The tasks currently running on a Polkadot core.
   const fetchRegionWorkload = async (
     core: CoreIndex,
-    regionMask: CoreMask
+    regionMask: string
   ): Promise<Task> => {
     if (
       !coretimeApi ||
@@ -115,7 +111,7 @@ const TaskDataProvider = ({ children }: Props) => {
       } = workload;
 
       // Make the workload is for the specific region.
-      return mask == regionMask.toRawHex() ? parseHNString(taskId) : null;
+      return mask == regionMask ? parseHNString(taskId) : null;
     }
     return 0;
   };
diff --git a/src/hooks/renewableParas.tsx b/src/hooks/renewableParas.tsx
index 361a9e1e..4d609d76 100644
--- a/src/hooks/renewableParas.tsx
+++ b/src/hooks/renewableParas.tsx
@@ -1,4 +1,3 @@
-import { CoreMask } from 'coretime-utils';
 import { useEffect, useState } from 'react';
 
 import { parseHNString } from '@/utils/functions';
@@ -10,7 +9,7 @@ type RenewableParachain = {
   core: number;
   paraID: number;
   price: number;
-  mask: CoreMask;
+  mask: string;
   when: number;
 };
 
@@ -58,7 +57,7 @@ export const useRenewableParachains = () => {
         parachains.push({
           core,
           price,
-          mask: new CoreMask(mask),
+          mask,
           paraID: parseHNString(Task),
           when,
         });
diff --git a/src/utils/functions.test.ts b/src/utils/functions.test.ts
index 53dbf63e..529403b3 100644
--- a/src/utils/functions.test.ts
+++ b/src/utils/functions.test.ts
@@ -1,4 +1,4 @@
-import { CoreMask, RegionId } from 'coretime-utils';
+import { completeMask, RegionId } from 'coretime-utils';
 
 import {
   extractRegionIdFromRaw,
@@ -33,7 +33,7 @@ describe('Util functions', () => {
       const regionId: RegionId = {
         begin: 4,
         core: 0,
-        mask: CoreMask.completeMask(),
+        mask: completeMask(),
       };
       expect(extractRegionIdFromRaw(BigInt(raw))).toStrictEqual(regionId);
     });
diff --git a/src/utils/functions.ts b/src/utils/functions.ts
index 1aa9418e..c78f02c9 100644
--- a/src/utils/functions.ts
+++ b/src/utils/functions.ts
@@ -2,7 +2,7 @@ import { ApiPromise } from '@polkadot/api';
 import { AddressOrPair, SubmittableExtrinsic } from '@polkadot/api/types';
 import { ISubmittableResult, Signer } from '@polkadot/types/types';
 import { formatBalance as polkadotFormatBalance } from '@polkadot/util';
-import { CoreMask, RegionId } from 'coretime-utils';
+import { RegionId } from 'coretime-utils';
 import Decimal from 'decimal.js';
 
 import {
@@ -115,7 +115,7 @@ export const extractRegionIdFromRaw = (rawRegionId: bigint): RegionId => {
   return {
     begin,
     core,
-    mask: new CoreMask(('0x' + mask.toString(16)).padEnd(22, '0')),
+    mask: ('0x' + mask.toString(16)).padEnd(22, '0'),
   };
 };