diff --git a/packages/@webex/contact-center/src/cc.ts b/packages/@webex/contact-center/src/cc.ts
index 41292d68e6a..68973628bfa 100644
--- a/packages/@webex/contact-center/src/cc.ts
+++ b/packages/@webex/contact-center/src/cc.ts
@@ -785,7 +785,11 @@ export default class ContactCenter extends WebexPlugin implements IContactCenter
         METRIC_EVENT_NAMES.STATION_LOGIN_FAILED,
       ]);
 
-      if (data.loginOption === LoginOption.AGENT_DN && !isValidDialNumber(data.dialNumber)) {
+      const dialPlanEntries = this.agentConfig?.dialPlan?.dialPlanEntity ?? [];
+      if (
+        data.loginOption === LoginOption.AGENT_DN &&
+        !isValidDialNumber(data.dialNumber, dialPlanEntries)
+      ) {
         const error = new Error('INVALID_DIAL_NUMBER');
         // @ts-ignore - adding custom key to the error object
         error.details = {data: {reason: 'INVALID_DIAL_NUMBER'}} as Failure;
diff --git a/packages/@webex/contact-center/src/services/core/Utils.ts b/packages/@webex/contact-center/src/services/core/Utils.ts
index 8e439607933..c6b99b9589a 100644
--- a/packages/@webex/contact-center/src/services/core/Utils.ts
+++ b/packages/@webex/contact-center/src/services/core/Utils.ts
@@ -10,6 +10,7 @@ import {
   Interaction,
 } from '../task/types';
 import {PARTICIPANT_TYPES, STATE_CONSULT} from './constants';
+import {DialPlan} from '../config/types';
 
 /**
  * Extracts common error details from a Webex request payload.
@@ -48,11 +49,37 @@ const getAgentActionTypeFromTask = (taskData?: TaskData): 'DIAL_NUMBER' | '' =>
   return isDialNumber || isEntryPointVariant ? 'DIAL_NUMBER' : '';
 };
 
-export const isValidDialNumber = (input: string): boolean => {
-  // This regex checks for a valid dial number format for only few countries such as US, Canada.
-  const regexForDn = /1[0-9]{3}[2-9][0-9]{6}([,]{1,10}[0-9]+){0,1}/;
+// Fallback regex for US/Canada dial numbers when no dial plan entries are configured
+export const FALLBACK_DIAL_NUMBER_REGEX = /1[0-9]{3}[2-9][0-9]{6}([,]{1,10}[0-9]+){0,1}/;
 
-  return regexForDn.test(input);
+/**
+ * Validates a dial number against the provided dial plan regex patterns.
+ * A number is valid if it matches at least one regex pattern in the dial plans.
+ * Falls back to US/Canada regex validation if no dial plan entries are configured.
+ *
+ * @param input - The dial number to validate
+ * @param dialPlanEntries - Array of dial plan entries containing regex patterns
+ * @returns true if the input matches at least one dial plan regex pattern, false otherwise
+ */
+export const isValidDialNumber = (
+  input: string,
+  dialPlanEntries: DialPlan['dialPlanEntity']
+): boolean => {
+  if (!dialPlanEntries || dialPlanEntries.length === 0) {
+    LoggerProxy.info('No dial plan entries found. Falling back to US number validation.');
+
+    return FALLBACK_DIAL_NUMBER_REGEX.test(input);
+  }
+
+  return dialPlanEntries.some((entry) => {
+    try {
+      const regex = new RegExp(entry.regex);
+
+      return regex.test(input);
+    } catch {
+      return false;
+    }
+  });
 };
 
 export const getStationLoginErrorData = (failure: Failure, loginOption: LoginOption) => {
@@ -74,7 +101,7 @@ export const getStationLoginErrorData = (failure: Failure, loginOption: LoginOpt
     },
     INVALID_DIAL_NUMBER: {
       message:
-        'Enter a valid US dial number. For help, reach out to your administrator or support team.',
+        'Enter a valid dial number. For help, reach out to your administrator or support team.',
       fieldName: loginOption,
     },
   };
diff --git a/packages/@webex/contact-center/test/unit/spec/services/core/Utils.ts b/packages/@webex/contact-center/test/unit/spec/services/core/Utils.ts
index 35c0e895574..ac0543c415d 100644
--- a/packages/@webex/contact-center/test/unit/spec/services/core/Utils.ts
+++ b/packages/@webex/contact-center/test/unit/spec/services/core/Utils.ts
@@ -1,4 +1,5 @@
 import * as Utils from '../../../../../src/services/core/Utils';
+import {FALLBACK_DIAL_NUMBER_REGEX} from '../../../../../src/services/core/Utils';
 import LoggerProxy from '../../../../../src/logger-proxy';
 import WebexRequest from '../../../../../src/services/core/WebexRequest';
 import {LoginOption, WebexRequestPayload} from '../../../../../src/types';
@@ -244,7 +245,7 @@ describe('Utils', () => {
       const result = Utils.getStationLoginErrorData(failure, LoginOption.AGENT_DN);
       expect(result).toEqual({
         message:
-          'Enter a valid US dial number. For help, reach out to your administrator or support team.',
+          'Enter a valid dial number. For help, reach out to your administrator or support team.',
         fieldName: LoginOption.AGENT_DN,
       });
     });
@@ -557,4 +558,65 @@ describe('Utils', () => {
     });
   });
 
+  describe('isValidDialNumber', () => {
+    const anyFormatEntry = {
+      name: 'Any Format',
+      prefix: '',
+      regex: '([0-9a-zA-Z]+[-._])*[0-9a-zA-Z]+',
+      strippedChars: '( )-',
+    };
+
+    const usOnlyEntry = {
+      name: 'US',
+      prefix: '1',
+      regex: FALLBACK_DIAL_NUMBER_REGEX.source,
+      strippedChars: '( )-',
+    };
+
+    describe('with multiple dial plan entries (Any Format + US)', () => {
+      const dialPlanEntries = [anyFormatEntry, usOnlyEntry];
+
+      it('should return true for a valid US phone number', () => {
+        const result = Utils.isValidDialNumber('12223334567', dialPlanEntries);
+        expect(result).toBe(true);
+      });
+
+      it('should return true for a UK phone number', () => {
+        const result = Utils.isValidDialNumber('+442030484377', dialPlanEntries);
+        expect(result).toBe(true);
+      });
+    });
+
+    describe('with US-only dial plan entry', () => {
+      const dialPlanEntries = [usOnlyEntry];
+
+      it('should return true for a valid US phone number', () => {
+        const result = Utils.isValidDialNumber('12223334567', dialPlanEntries);
+        expect(result).toBe(true);
+      });
+
+      it('should return false for a UK phone number', () => {
+        const result = Utils.isValidDialNumber('+442030484377', dialPlanEntries);
+        expect(result).toBe(false);
+      });
+
+      it('should return false for an invalid US number format', () => {
+        const result = Utils.isValidDialNumber('1234567890', dialPlanEntries);
+        expect(result).toBe(false);
+      });
+    });
+
+    describe('with empty dial plan entries (fallback to US regex)', () => {
+      it('should return true for a valid US phone number', () => {
+        const result = Utils.isValidDialNumber('12223334567', []);
+        expect(result).toBe(true);
+      });
+
+      it('should return false for a UK phone number', () => {
+        const result = Utils.isValidDialNumber('+442030484377', []);
+        expect(result).toBe(false);
+      });
+    });
+  });
+
 });