diff --git a/googletrans/client.py b/googletrans/client.py
index aab1ccf..de107b0 100644
--- a/googletrans/client.py
+++ b/googletrans/client.py
@@ -15,6 +15,7 @@
 from googletrans import urls, utils
 from googletrans.gtoken import TokenAcquirer
 from googletrans.constants import (
+    DEFAULT_CLIENT_SERVICE_URLS,
     DEFAULT_USER_AGENT, LANGCODES, LANGUAGES, SPECIAL_CASES,
     DEFAULT_RAISE_EXCEPTION, DUMMY_DATA
 )
@@ -51,7 +52,7 @@ class Translator:
     :type raise_exception: boolean
     """
 
-    def __init__(self, service_urls=None, user_agent=DEFAULT_USER_AGENT,
+    def __init__(self, service_urls=DEFAULT_CLIENT_SERVICE_URLS, user_agent=DEFAULT_USER_AGENT,
                  raise_exception=DEFAULT_RAISE_EXCEPTION,
                  proxies: typing.Dict[str, httpcore.SyncHTTPTransport] = None,
                  timeout: Timeout = None,
@@ -87,7 +88,7 @@ def __init__(self, service_urls=None, user_agent=DEFAULT_USER_AGENT,
             self.client_type = 'webapp'
             self.token_acquirer = TokenAcquirer(
                 client=self.client, host=self.service_urls[0])
-            
+
         self.raise_exception = raise_exception
 
     def _pick_service_url(self):
diff --git a/googletrans/constants.py b/googletrans/constants.py
index 3063b19..9d80b6d 100644
--- a/googletrans/constants.py
+++ b/googletrans/constants.py
@@ -1,5 +1,9 @@
 DEFAULT_USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)'
 
+DEFAULT_CLIENT_SERVICE_URLS = (
+    'translate.googleapis.com',
+)
+
 DEFAULT_SERVICE_URLS = ('translate.google.ac', 'translate.google.ad', 'translate.google.ae',
                         'translate.google.al', 'translate.google.am', 'translate.google.as',
                         'translate.google.at', 'translate.google.az', 'translate.google.ba',
@@ -21,21 +25,21 @@
                         'translate.google.com.ai', 'translate.google.com.ar', 'translate.google.com.au',
                         'translate.google.com.bd', 'translate.google.com.bh', 'translate.google.com.bn',
                         'translate.google.com.bo', 'translate.google.com.br', 'translate.google.com.bz',
-                        'translate.google.com.co', 'translate.google.com.cu', 'translate.google.com.cy', 
-                        'translate.google.com.do', 'translate.google.com.ec', 'translate.google.com.eg', 
-                        'translate.google.com.et', 'translate.google.com.fj', 'translate.google.com.gh', 
-                        'translate.google.com.gi', 'translate.google.com.gt', 'translate.google.com.hk', 
-                        'translate.google.com.jm', 'translate.google.com.kh', 'translate.google.com.kw', 
-                        'translate.google.com.lb', 'translate.google.com.ly', 'translate.google.com.mm', 
-                        'translate.google.com.mt', 'translate.google.com.mx', 'translate.google.com.my', 
-                        'translate.google.com.na', 'translate.google.com.ng', 'translate.google.com.ni', 
-                        'translate.google.com.np', 'translate.google.com.om', 'translate.google.com.pa', 
-                        'translate.google.com.pe', 'translate.google.com.pg', 'translate.google.com.ph', 
-                        'translate.google.com.pk', 'translate.google.com.pr', 'translate.google.com.py', 
-                        'translate.google.com.qa', 'translate.google.com.sa', 'translate.google.com.sb', 
-                        'translate.google.com.sg', 'translate.google.com.sl', 'translate.google.com.sv', 
-                        'translate.google.com.tj', 'translate.google.com.tr', 'translate.google.com.tw', 
-                        'translate.google.com.ua', 'translate.google.com.uy', 'translate.google.com.vc', 
+                        'translate.google.com.co', 'translate.google.com.cu', 'translate.google.com.cy',
+                        'translate.google.com.do', 'translate.google.com.ec', 'translate.google.com.eg',
+                        'translate.google.com.et', 'translate.google.com.fj', 'translate.google.com.gh',
+                        'translate.google.com.gi', 'translate.google.com.gt', 'translate.google.com.hk',
+                        'translate.google.com.jm', 'translate.google.com.kh', 'translate.google.com.kw',
+                        'translate.google.com.lb', 'translate.google.com.ly', 'translate.google.com.mm',
+                        'translate.google.com.mt', 'translate.google.com.mx', 'translate.google.com.my',
+                        'translate.google.com.na', 'translate.google.com.ng', 'translate.google.com.ni',
+                        'translate.google.com.np', 'translate.google.com.om', 'translate.google.com.pa',
+                        'translate.google.com.pe', 'translate.google.com.pg', 'translate.google.com.ph',
+                        'translate.google.com.pk', 'translate.google.com.pr', 'translate.google.com.py',
+                        'translate.google.com.qa', 'translate.google.com.sa', 'translate.google.com.sb',
+                        'translate.google.com.sg', 'translate.google.com.sl', 'translate.google.com.sv',
+                        'translate.google.com.tj', 'translate.google.com.tr', 'translate.google.com.tw',
+                        'translate.google.com.ua', 'translate.google.com.uy', 'translate.google.com.vc',
                         'translate.google.com.vn', 'translate.google.com', 'translate.google.cv',
                         'translate.google.cz', 'translate.google.de', 'translate.google.dj',
                         'translate.google.dk', 'translate.google.dm', 'translate.google.dz',
@@ -65,9 +69,9 @@
                         'translate.google.st', 'translate.google.td', 'translate.google.tg',
                         'translate.google.tk', 'translate.google.tl', 'translate.google.tm',
                         'translate.google.tn', 'translate.google.to', 'translate.google.tt',
-                        'translate.google.us', 'translate.google.vg', 'translate.google.vu', 
+                        'translate.google.us', 'translate.google.vg', 'translate.google.vu',
                         'translate.google.ws')
-                        
+
 SPECIAL_CASES = {
     'ee': 'et',
 }