diff --git a/src/assets/javascripts/helpers/common.js b/src/assets/javascripts/helpers/common.js
index 6e1c71f..4a264be 100644
--- a/src/assets/javascripts/helpers/common.js
+++ b/src/assets/javascripts/helpers/common.js
@@ -18,7 +18,7 @@ function getRandomInstance(instances) {
 let cloudflareList = [];
 async function initCloudflareList() {
   return new Promise(resolve => {
-    fetch('/instances/cloudflare.json').then(response => response.text()).then(data => {
+    fetch('/instances/blocklist').then(response => response.text()).then(data => {
       cloudflareList = JSON.parse(data);
       resolve();
     })
diff --git a/src/instances/cloudflare.json b/src/instances/blocklist.json
similarity index 97%
rename from src/instances/cloudflare.json
rename to src/instances/blocklist.json
index 5424cc5..0e69e36 100644
--- a/src/instances/cloudflare.json
+++ b/src/instances/blocklist.json
@@ -9,6 +9,7 @@
   "https://piped.mha.fi",
   "https://send.silkky.cloud",
   "https://nhanh.cloud",
+  "https://nitter.nixnet.services",
   "https://nitter.domain.glass",
   "https://birdsite.xanny.family",
   "https://nitter.moomoo.me",
diff --git a/src/instances/data.json b/src/instances/data.json
index d095e95..0cd02b7 100644
--- a/src/instances/data.json
+++ b/src/instances/data.json
@@ -2,7 +2,6 @@
   "invidious": {
     "normal": [
       "https://yewtu.be",
-      "https://vid.puffyan.us",
       "https://invidious.snopyta.org",
       "https://invidious.kavin.rocks",
       "https://inv.riverside.rocks",
@@ -19,7 +18,8 @@
       "https://invidious.weblibre.org",
       "https://invidious.esmailelbob.xyz",
       "https://youtube.076.ne.jp",
-      "https://invidious.namazso.eu"
+      "https://invidious.namazso.eu",
+      "https://vid.puffyan.us"
     ],
     "tor": [
       "http://c7hqkpkpemu6e7emz5b4vyz7idjgdvgaaa3dyimmeojqbgpea3xqjoid.onion",
@@ -376,7 +376,6 @@
       "https://searx.nixnet.services",
       "https://searx.openhoofd.nl",
       "https://searx.org",
-      "https://searx.ppeb.me",
       "https://searx.pwoss.org",
       "https://searx.rasp.fr",
       "https://searx.ru",
@@ -444,6 +443,7 @@
       "https://searx.mha.fi",
       "https://searx.namejeff.xyz",
       "https://searx.orion-hub.fr",
+      "https://searx.ppeb.me",
       "https://searx.prvcy.eu",
       "https://searx.sev.monster",
       "https://searx.tiekoetter.com",
diff --git a/src/instances/get_instances.py b/src/instances/get_instances.py
index 7b62a9f..facbca6 100644
--- a/src/instances/get_instances.py
+++ b/src/instances/get_instances.py
@@ -67,6 +67,16 @@ def is_cloudflare(url):
     return False
 
 
+def is_authenticate(url):
+    try:
+        r = requests.get(url, timeout=5)
+        if 'www-authenticate' in r.headers:
+            return True
+    except:
+        return False
+    return False
+
+
 def invidious():
     r = requests.get('https://api.invidious.io/instances.json')
     rJson = json.loads(r.text)
@@ -366,7 +376,7 @@ searx_searxng()
 whoogle()
 rimgo()
 
-cloudflareMightyList = []
+blocklist = []
 for k1, v1 in mightyList.items():
     if type(mightyList[k1]) is dict:
         for k2, v2 in mightyList[k1].items():
@@ -376,7 +386,9 @@ for k1, v1 in mightyList.items():
                 #     print("removed " + instance)
                 # else:
                 if not instance.endswith('.onion') and not instance.endswith('.i2p') and is_cloudflare(instance):
-                    cloudflareMightyList.append(instance)
+                    blocklist.append(instance)
+                if not instance.endswith('.onion') and not instance.endswith('.i2p') and is_authenticate(instance):
+                    blocklist.append(instance)
 
 peertube()
 
@@ -387,9 +399,9 @@ with open('./src/instances/data.json', 'w') as outfile:
     outfile.write(json_object)
 print(Fore.BLUE + 'wrote ' + Style.RESET_ALL + 'instances/data.json')
 
-json_object = json.dumps(cloudflareMightyList, ensure_ascii=False, indent=2)
-with open('./src/instances/cloudflare.json', 'w') as outfile:
+json_object = json.dumps(blocklist, ensure_ascii=False, indent=2)
+with open('./src/instances/blocklist.json', 'w') as outfile:
     outfile.write(json_object)
-print(Fore.BLUE + 'wrote ' + Style.RESET_ALL + 'instances/cloudflare.json')
+print(Fore.BLUE + 'wrote ' + Style.RESET_ALL + 'instances/blocklist')
 
 # print(json_object)
diff --git a/src/pages/background/background.js b/src/pages/background/background.js
index f7d0591..3c6efd3 100644
--- a/src/pages/background/background.js
+++ b/src/pages/background/background.js
@@ -22,7 +22,7 @@ window.browser = window.browser || window.chrome;
 
 browser.runtime.onInstalled.addListener(async details => {
   if (details.reason == 'install') {
-    fetch('/instances/cloudflare.json').then(response => response.text()).then(async data => {
+    fetch('/instances/blocklist.json').then(response => response.text()).then(async data => {
       await browser.storage.local.set({ cloudflareList: JSON.parse(data) })
       youtubeHelper.initDefaults();
       youtubeMusicHelper.initDefaults();