diff --git a/src/services/ens/index.test.ts b/src/services/ens/index.test.ts
index ff2a617d79..72b99f3d9c 100644
--- a/src/services/ens/index.test.ts
+++ b/src/services/ens/index.test.ts
@@ -6,6 +6,7 @@ import { logError } from '../exceptions'
 const rpcProvider = {
   resolveName: jest.fn(() => Promise.resolve('0x0000000000000000000000000000000000000000')),
   lookupAddress: jest.fn(() => Promise.resolve('safe.eth')),
+  getNetwork: jest.fn(() => Promise.resolve({ chainId: 1 })),
 } as unknown as JsonRpcProvider
 
 const badRpcProvider = {
@@ -19,6 +20,10 @@ jest.mock('../exceptions', () => ({
   logError: jest.fn(),
 }))
 
+jest.mock('./custom', () => ({
+  customResolveName: jest.fn(() => Promise.resolve('0x0000001111111111111111111111111111111111')),
+}))
+
 describe('domains', () => {
   describe('isDomain', () => {
     it('should check the domain format', async () => {
@@ -40,6 +45,15 @@ describe('domains', () => {
       expect(address).toBe(undefined)
       expect(logError).toHaveBeenCalledWith('101: Failed to resolve the address', 'bad resolveName')
     })
+
+    it('should look up names on Sepolia', async () => {
+      // mock rpcProvider
+      const rpcProvider = {
+        getNetwork: jest.fn(() => Promise.resolve({ chainId: 11155111 })),
+      } as unknown as JsonRpcProvider
+
+      expect(await resolveName(rpcProvider, 'sepolia.eth')).toBe('0x0000001111111111111111111111111111111111')
+    })
   })
 
   describe('lookupAddress', () => {