diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27c0886a..e782966b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- fixed: Update NowNodes URL's for DASH, GRS, and FIRO.
+
 ## 3.3.0 (2024-08-20)
 
 - added: Support for blockbook server connections with "%{key-name}" key parameters
diff --git a/src/common/utxobased/info/dash.ts b/src/common/utxobased/info/dash.ts
index 17ad7d23..a177cd47 100644
--- a/src/common/utxobased/info/dash.ts
+++ b/src/common/utxobased/info/dash.ts
@@ -39,7 +39,7 @@ const currencyInfo: EdgeCurrencyInfo = {
       'wss://dash3.trezor.io',
       'wss://dash4.trezor.io',
       'wss://dash5.trezor.io',
-      'wss://dashbook.nownodes.io/wss/%{nowNodesApiKey}'
+      'wss://dash.nownodes.io/wss/%{nowNodesApiKey}'
     ],
     enableCustomServers: false
   },
diff --git a/src/common/utxobased/info/groestlcoin.ts b/src/common/utxobased/info/groestlcoin.ts
index 61a5de34..7bc54baf 100644
--- a/src/common/utxobased/info/groestlcoin.ts
+++ b/src/common/utxobased/info/groestlcoin.ts
@@ -49,7 +49,7 @@ const engineInfo: EngineInfo = {
   serverConfigs: [
     {
       type: 'blockbook-nownode',
-      uris: ['https://grsbook.nownodes.io']
+      uris: ['https://grs.nownodes.io']
     }
   ],
   formats: ['bip49', 'bip84', 'bip44', 'bip32'],
diff --git a/src/common/utxobased/info/zcoin.ts b/src/common/utxobased/info/zcoin.ts
index bd37578d..04958670 100644
--- a/src/common/utxobased/info/zcoin.ts
+++ b/src/common/utxobased/info/zcoin.ts
@@ -32,7 +32,7 @@ export const currencyInfo: EdgeCurrencyInfo = {
     customFeeSettings: ['satPerByte'],
     blockbookServers: [
       'wss://blockbook.firo.org',
-      'wss://firobook.nownodes.io/wss/%{nowNodesApiKey}'
+      'wss://firo.nownodes.io/wss/%{nowNodesApiKey}'
     ],
     enableCustomServers: false
   },
diff --git a/src/common/utxobased/network/Socket.ts b/src/common/utxobased/network/Socket.ts
index e702be98..c414f574 100644
--- a/src/common/utxobased/network/Socket.ts
+++ b/src/common/utxobased/network/Socket.ts
@@ -134,7 +134,7 @@ export function makeSocket(uri: string, config: SocketConfig): Socket {
   let connected = false
   let cancelConnect = false
   const timeout: number = 1000 * (config.timeout ?? 30)
-  let trackedError: unknown | undefined
+  let trackedError: unknown
   let timer: NodeJS.Timeout
 
   const handleError = (e: unknown): void => {
@@ -153,14 +153,14 @@ export function makeSocket(uri: string, config: SocketConfig): Socket {
     removeIdFromQueue(socketQueueId)
   }
 
-  const onSocketClose = (): void => {
+  const onSocketClose = (code: number): void => {
     const errObj =
-      trackedError != null
-        ? trackedError instanceof Error
-          ? trackedError
-          : new Error(String(trackedError))
-        : new Error('Socket closed without error')
-    log.warn(`onSocketClose with server ${uri}: ${errObj.message}`)
+      trackedError == null
+        ? new Error('Socket closed without error')
+        : trackedError instanceof Error
+        ? trackedError
+        : new Error(String(trackedError))
+    log.warn(`onSocketClose with server ${uri}: ${code} ${errObj.message}`)
     clearTimeout(timer)
     connected = false
     socket = null
@@ -174,8 +174,8 @@ export function makeSocket(uri: string, config: SocketConfig): Socket {
     pendingRequests = {}
     try {
       emitter.emit(SocketEvent.CONNECTION_CLOSE, uri, errObj)
-    } catch (e) {
-      log.error(e.message)
+    } catch (e: unknown) {
+      log.error(String(e))
     }
   }
 
@@ -403,7 +403,7 @@ export function makeSocket(uri: string, config: SocketConfig): Socket {
           },
           onMessage: onMessage,
           onError: err => {
-            trackedError = new Error(String(err))
+            trackedError = err
           },
           onClose: onSocketClose
         }
diff --git a/src/common/utxobased/network/nodejsWS.ts b/src/common/utxobased/network/nodejsWS.ts
index ee9368f7..dd8935e5 100644
--- a/src/common/utxobased/network/nodejsWS.ts
+++ b/src/common/utxobased/network/nodejsWS.ts
@@ -22,8 +22,8 @@ export function setupWS(
   ws.on('error', error => {
     callbacks.onError(error)
   })
-  ws.on('close', _event => {
-    callbacks.onClose()
+  ws.on('close', (code: number, reason: string) => {
+    callbacks.onClose(code, reason)
   })
 
   return {
diff --git a/src/common/utxobased/network/types.ts b/src/common/utxobased/network/types.ts
index d2835131..58de4072 100644
--- a/src/common/utxobased/network/types.ts
+++ b/src/common/utxobased/network/types.ts
@@ -1,7 +1,12 @@
 export interface InnerSocketCallbacks {
-  onError: (error?: unknown) => void
+  /**
+   * Called when the socket closes.
+   * See rfc6455 section 7.4.1 for status codes.
+   */
+  onClose: (code: number, reason: string) => void
+
+  onError: (error?: Event | Error) => void
   onMessage: (message: string) => void
-  onClose: (error?: Error) => void
   onOpen: () => void
 }
 
diff --git a/src/common/utxobased/network/windowWS.ts b/src/common/utxobased/network/windowWS.ts
index c5de16a9..bf9b1f7f 100644
--- a/src/common/utxobased/network/windowWS.ts
+++ b/src/common/utxobased/network/windowWS.ts
@@ -17,8 +17,8 @@ export function setupBrowser(
   socket.onerror = event => {
     callbacks.onError(event)
   }
-  socket.onclose = () => {
-    callbacks.onClose()
+  socket.onclose = event => {
+    callbacks.onClose(event.code, event.reason)
   }
 
   return {