diff --git a/packages/network/tests/signer/signers/vechain-private-key-signer/vechain-private-key-signer.unit.test.ts b/packages/network/tests/signer/signers/vechain-private-key-signer/vechain-private-key-signer.unit.test.ts
index 9154e9cd1..7e74a46d2 100644
--- a/packages/network/tests/signer/signers/vechain-private-key-signer/vechain-private-key-signer.unit.test.ts
+++ b/packages/network/tests/signer/signers/vechain-private-key-signer/vechain-private-key-signer.unit.test.ts
@@ -159,6 +159,20 @@ describe('Vechain base signer tests', () => {
     });
 
     describe('resolveName(vnsName)', () => {
+        test('Should return null if provider is not set', async () => {
+            const signer = new VechainPrivateKeySigner(
+                Buffer.from(
+                    '7f9290cc44c5fd2b95fe21d6ad6fe5fa9c177e1cd6f3b4c96a97b13e09eaa158',
+                    'hex'
+                ),
+                null
+            );
+
+            const name = 'test-sdk.vet';
+            const result = await signer.resolveName(name);
+            expect(result).toEqual(null);
+        });
+
         test('Should use vnsUtils.resolveName() to resolve an address by name', async () => {
             const signer = new VechainPrivateKeySigner(
                 Buffer.from(
diff --git a/packages/network/tests/thor-client/transactions/fixture.ts b/packages/network/tests/thor-client/transactions/fixture.ts
index 62b2637a9..4c7340a3e 100644
--- a/packages/network/tests/thor-client/transactions/fixture.ts
+++ b/packages/network/tests/thor-client/transactions/fixture.ts
@@ -355,6 +355,88 @@ const buildTransactionBodyClausesTestCases = [
                 reserved: { features: 1 }
             }
         }
+    },
+    {
+        description:
+            'Should not modify "to" part of clauses when no name is used',
+        clauses: [
+            {
+                to: '0x0000000000000000000000000000456E65726779',
+                value: '0',
+                data: '0x'
+            },
+            {
+                to: null,
+                value: '0',
+                data: '0x'
+            },
+            {
+                to: 'vtho.test-sdk.vet',
+                value: '0',
+                data: '0x'
+            }
+        ],
+        options: {
+            gasPriceCoef: 255,
+            expiration: 1000,
+            isDelegated: true,
+            dependsOn:
+                '0x9140e36f05000508465fd55d70947b99a78c84b3afa5e068b955e366b560935f' // Any valid tx id
+        },
+        expected: {
+            solo: {
+                chainTag: 246,
+                clauses: [
+                    {
+                        data: '0x',
+                        to: '0x0000000000000000000000000000456E65726779',
+                        value: '0'
+                    },
+                    {
+                        to: null,
+                        data: '0x',
+                        value: '0'
+                    },
+                    {
+                        data: '0x',
+                        to: '0x0000000000000000000000000000456E65726779',
+                        value: '0'
+                    }
+                ],
+                dependsOn:
+                    '0x9140e36f05000508465fd55d70947b99a78c84b3afa5e068b955e366b560935f',
+                expiration: 1000,
+                gas: 100046,
+                gasPriceCoef: 255,
+                reserved: { features: 1 }
+            },
+            testnet: {
+                chainTag: 39,
+                clauses: [
+                    {
+                        data: '0x',
+                        to: '0x0000000000000000000000000000456E65726779',
+                        value: '0'
+                    },
+                    {
+                        to: null,
+                        data: '0x',
+                        value: '0'
+                    },
+                    {
+                        data: '0x',
+                        to: '0x0000000000000000000000000000456E65726779',
+                        value: '0'
+                    }
+                ],
+                dependsOn:
+                    '0x9140e36f05000508465fd55d70947b99a78c84b3afa5e068b955e366b560935f',
+                expiration: 1000,
+                gas: 100046,
+                gasPriceCoef: 255,
+                reserved: { features: 1 }
+            }
+        }
     }
 ];
 
diff --git a/packages/network/tests/utils/vns/lookups.mock.solo.test.ts b/packages/network/tests/utils/vns/lookups.mock.solo.test.ts
new file mode 100644
index 000000000..fb2969a4e
--- /dev/null
+++ b/packages/network/tests/utils/vns/lookups.mock.solo.test.ts
@@ -0,0 +1,175 @@
+import {
+    afterEach,
+    beforeEach,
+    describe,
+    expect,
+    jest,
+    test
+} from '@jest/globals';
+import { ThorClient, vnsUtils } from '../../../src';
+import { testnetUrl } from '../../fixture';
+
+/**
+ * vnsUtils vet.domains tests
+ *
+ * @group unit/utils/vnsUtils
+ */
+describe('vnsUtils', () => {
+    /**
+     * ThorClient instances
+     */
+    let thorClient: ThorClient;
+
+    /**
+     * Init thor client and provider before each test
+     */
+    beforeEach(() => {
+        thorClient = ThorClient.fromUrl(testnetUrl);
+    });
+
+    /**
+     * Destroy thor client after each test
+     */
+    afterEach(() => {
+        thorClient.destroy();
+    });
+
+    describe('resolveNames(string[])', () => {
+        test('Should use the correct resolveUtils based on the passed thor client', async () => {
+            const names = ['test-sdk-1.vet', 'test-sdk-2.vet'];
+            const executeCall = jest.fn(async () => {
+                return await Promise.reject(new Error('error'));
+            });
+            jest.spyOn(
+                thorClient.contracts,
+                'executeCall'
+            ).mockImplementationOnce(executeCall);
+
+            await expect(
+                vnsUtils.resolveNames(thorClient, names)
+            ).rejects.toThrow();
+            expect(executeCall).toHaveBeenCalledWith(
+                '0xc403b8EA53F707d7d4de095f0A20bC491Cf2bc94',
+                'function getAddresses(string[] names) returns (address[] addresses)',
+                [names]
+            );
+        });
+
+        test('Should return null if genesisBlock can not be loaded', async () => {
+            // Mock the getGenesisBlock method to return null
+            jest.spyOn(
+                thorClient.blocks,
+                'getGenesisBlock'
+            ).mockResolvedValueOnce(null);
+
+            const addresses = await vnsUtils.resolveNames(thorClient, [
+                'test-sdk.vet'
+            ]);
+            expect(addresses).toEqual([null]);
+        });
+
+        test('Should return null if genesis has no matching configuration unknown', async () => {
+            jest.spyOn(
+                thorClient.blocks,
+                'getGenesisBlock'
+            ).mockResolvedValueOnce({
+                number: 0,
+                id: '0x00000000c05a20fbca2bf6ae3affba6af4a74b800b585bf7a4988aba7aea0000', // different genesis id
+                size: 170,
+                parentID:
+                    '0xffffffff00000000000000000000000000000000000000000000000000000000',
+                timestamp: 1526400000,
+                gasLimit: 10000000,
+                beneficiary: '0x0000000000000000000000000000000000000000',
+                gasUsed: 0,
+                totalScore: 0,
+                txsRoot:
+                    '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
+                txsFeatures: 0,
+                stateRoot:
+                    '0x93de0ffb1f33bc0af053abc2a87c4af44594f5dcb1cb879dd823686a15d68550',
+                receiptsRoot:
+                    '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
+                signer: '0x0000000000000000000000000000000000000000',
+                isTrunk: true,
+                transactions: []
+            });
+
+            const addresses = await vnsUtils.resolveNames(thorClient, [
+                'test-sdk.vet'
+            ]);
+            expect(addresses).toEqual([null]);
+        });
+    });
+
+    describe('lookupAddresses(string[])', () => {
+        test('Should use the correct resolveUtils based on the passed thor client', async () => {
+            const addresses = [
+                '0x0000000000000000000000000000456E65726779',
+                '0x625fCe8dd8E2C05e82e77847F3da06AF6e55A7AF'
+            ];
+            const executeCall = jest.fn(async () => {
+                return await Promise.reject(new Error('error'));
+            });
+            jest.spyOn(
+                thorClient.contracts,
+                'executeCall'
+            ).mockImplementationOnce(executeCall);
+
+            await expect(
+                vnsUtils.lookupAddresses(thorClient, addresses)
+            ).rejects.toThrow();
+            expect(executeCall).toHaveBeenCalledWith(
+                '0xc403b8EA53F707d7d4de095f0A20bC491Cf2bc94',
+                'function getNames(address[] addresses) returns (string[] names)',
+                [addresses]
+            );
+        });
+
+        test('Should return null if genesisBlock can not be loaded', async () => {
+            // Mock the  method to return null
+            jest.spyOn(
+                thorClient.blocks,
+                'getGenesisBlock'
+            ).mockResolvedValueOnce(null);
+
+            const names = await vnsUtils.lookupAddresses(thorClient, [
+                '0x0000000000000000000000000000000000000000'
+            ]);
+            expect(names).toEqual([null]);
+        });
+
+        test('Should return null if genesis has no matching configuration unknown', async () => {
+            jest.spyOn(
+                thorClient.blocks,
+                'getGenesisBlock'
+            ).mockResolvedValueOnce({
+                number: 0,
+                id: '0x00000000c05a20fbca2bf6ae3affba6af4a74b800b585bf7a4988aba7aea0000', // different genesis id
+                size: 170,
+                parentID:
+                    '0xffffffff00000000000000000000000000000000000000000000000000000000',
+                timestamp: 1526400000,
+                gasLimit: 10000000,
+                beneficiary: '0x0000000000000000000000000000000000000000',
+                gasUsed: 0,
+                totalScore: 0,
+                txsRoot:
+                    '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
+                txsFeatures: 0,
+                stateRoot:
+                    '0x93de0ffb1f33bc0af053abc2a87c4af44594f5dcb1cb879dd823686a15d68550',
+                receiptsRoot:
+                    '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
+                signer: '0x0000000000000000000000000000000000000000',
+                isTrunk: true,
+                transactions: []
+            });
+
+            const names = await vnsUtils.lookupAddresses(thorClient, [
+                '0x0000000000000000000000000000000000000000'
+            ]);
+            expect(names).toEqual([null]);
+        });
+    });
+});
diff --git a/packages/network/tests/utils/vns/lookups.unit.test.ts b/packages/network/tests/utils/vns/lookups.unit.test.ts
index 462f3ae92..d6f44a2d2 100644
--- a/packages/network/tests/utils/vns/lookups.unit.test.ts
+++ b/packages/network/tests/utils/vns/lookups.unit.test.ts
@@ -1,8 +1,3 @@
-/**
- * Vechain provider tests
- *
- * @group integration/providers/vechain-provider
- */
 import {
     afterEach,
     beforeEach,
@@ -13,12 +8,11 @@ import {
 } from '@jest/globals';
 import { ThorClient, vnsUtils } from '../../../src';
 import { testnetUrl } from '../../fixture';
-// import { addressUtils, TESTNET_NETWORK } from '../../../../core';
 
 /**
- * vet.domains Name Service Utilities
+ * vnsUtils vet.domains tests
  *
- * @group unit/utils/vns
+ * @group unit/utils/vnsUtils
  */
 describe('vnsUtils', () => {
     /**