diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index cdc02e90..83db958b 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -39,7 +39,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -50,7 +50,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -64,4 +64,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2
diff --git a/packages/xrpl/src/client/index.ts b/packages/xrpl/src/client/index.ts
index 0f812000..6543b9d3 100644
--- a/packages/xrpl/src/client/index.ts
+++ b/packages/xrpl/src/client/index.ts
@@ -101,6 +101,7 @@ import {
   getXrpBalance,
   submit,
   submitAndWait,
+  getNetworkID,
 } from '../sugar'
 import fundWallet from '../Wallet/fundWallet'
 
@@ -200,6 +201,13 @@ class Client extends EventEmitter {
    */
   public readonly maxFeeXRP: string
 
+  /**
+   * Network ID of the server this sdk is connected to
+   *
+   * @category Fee
+   */
+  public networkID: number
+
   /**
    * Creates a new Client with a websocket connection to a rippled server.
    *
@@ -218,6 +226,7 @@ class Client extends EventEmitter {
 
     this.feeCushion = options.feeCushion ?? DEFAULT_FEE_CUSHION
     this.maxFeeXRP = options.maxFeeXRP ?? DEFAULT_MAX_FEE_XRP
+    this.networkID = 1
 
     this.connection = new Connection(server, options)
 
@@ -634,6 +643,11 @@ class Client extends EventEmitter {
    */
   public getLedgerIndex = getLedgerIndex
 
+  /**
+   * @category Abstraction
+   */
+  public getNetworkID = getNetworkID
+
   /**
    * @category Faucet
    */
diff --git a/packages/xrpl/src/models/methods/serverInfo.ts b/packages/xrpl/src/models/methods/serverInfo.ts
index bfcfcbbd..5bd3dd2b 100644
--- a/packages/xrpl/src/models/methods/serverInfo.ts
+++ b/packages/xrpl/src/models/methods/serverInfo.ts
@@ -136,6 +136,10 @@ export interface ServerInfoResponse extends BaseResponse {
        * overall network's load factor.
        */
       load_factor?: number
+      /**
+       * The network id of the server.
+       */
+      network_id?: number
       /**
        * Current multiplier to the transaction cost based on
        * load to this server.
diff --git a/packages/xrpl/src/models/transactions/common.ts b/packages/xrpl/src/models/transactions/common.ts
index 498a2d74..8bceabe6 100644
--- a/packages/xrpl/src/models/transactions/common.ts
+++ b/packages/xrpl/src/models/transactions/common.ts
@@ -159,6 +159,10 @@ export interface BaseTransaction {
    * account it says it is from.
    */
   TxnSignature?: string
+  /**
+   * The network id of the transaction.
+   */
+  NetworkID?: number
 }
 
 /**
@@ -252,6 +256,9 @@ export function validateBaseTransaction(common: Record<string, unknown>): void {
   ) {
     throw new ValidationError('BaseTransaction: invalid TxnSignature')
   }
+  if (common.NetworkID !== undefined && typeof common.NetworkID !== 'number') {
+    throw new ValidationError('BaseTransaction: invalid NetworkID')
+  }
 }
 
 /**
diff --git a/packages/xrpl/src/sugar/autofill.ts b/packages/xrpl/src/sugar/autofill.ts
index 79718bdf..95bcbe9a 100644
--- a/packages/xrpl/src/sugar/autofill.ts
+++ b/packages/xrpl/src/sugar/autofill.ts
@@ -12,6 +12,7 @@ import { getFeeXrp } from './getFeeXrp'
 
 // Expire unconfirmed transactions after 20 ledger versions, approximately 1 minute, by default
 const LEDGER_OFFSET = 20
+const RESTRICTED_NETWORKS = 1024
 interface ClassicAccountAndTag {
   classicAccount: string
   tag: number | false | undefined
@@ -39,8 +40,10 @@ async function autofill<T extends Transaction>(
   setValidAddresses(tx)
 
   setTransactionFlagsToNumber(tx)
-
   const promises: Array<Promise<void>> = []
+  if (this.networkID > RESTRICTED_NETWORKS && tx.NetworkID == null) {
+    tx.NetworkID = this.networkID
+  }
   if (tx.Sequence == null) {
     promises.push(setNextValidSequenceNumber(this, tx))
   }
diff --git a/packages/xrpl/src/sugar/getNetworkID.ts b/packages/xrpl/src/sugar/getNetworkID.ts
new file mode 100644
index 00000000..d7c3489f
--- /dev/null
+++ b/packages/xrpl/src/sugar/getNetworkID.ts
@@ -0,0 +1,15 @@
+import type { Client } from '..'
+// import { XrplError } from '../errors'
+
+/**
+ * Returns the network ID of the rippled server.
+ *
+ * @param this - The Client used to connect to the ledger.
+ * @returns The network id.
+ */
+export default async function getNetworkID(this: Client): Promise<number> {
+  const response = await this.request({
+    command: 'server_info',
+  })
+  return response.result.info.network_id ?? 1
+}
diff --git a/packages/xrpl/src/sugar/index.ts b/packages/xrpl/src/sugar/index.ts
index c132bf7f..15ec38e9 100644
--- a/packages/xrpl/src/sugar/index.ts
+++ b/packages/xrpl/src/sugar/index.ts
@@ -7,6 +7,8 @@ export { default as getLedgerIndex } from './getLedgerIndex'
 export { default as getOrderbook } from './getOrderbook'
 export { getFeeXrp, getFeeEstimateXrp } from './getFeeXrp'
 
+export { default as getNetworkID } from './getNetworkID'
+
 export * from './submit'
 
 export * from './utils'