diff --git a/harvester/proxy.py b/harvester/proxy.py
index 7854f88..f5a2407 100644
--- a/harvester/proxy.py
+++ b/harvester/proxy.py
@@ -1,4 +1,5 @@
 """Proxy harvester module"""
+import concurrent.futures
 import re
 import requests
 
@@ -10,12 +11,28 @@ def fetch_list(url):
     except requests.RequestException:
         return []
 
-    # proxy_regex = r"(?:\d{1,3}\.){3}\d{1,3}:\d+"
     proxy_regex = r"(?:\b(?:[\S]+:)?(?:[\S]+)?@\b)?(?:\d{1,3}\.){3}\d{1,3}:\d+"
     proxies = re.findall(proxy_regex, response.text)
     return proxies
 
 
+def fetch_all(urls, max_workers=8):
+    proxies = []
+    with concurrent.futures.ThreadPoolExecutor(max_workers=max_workers) as executor:
+        future_to_url = {executor.submit(fetch_list, url): url for url in urls}
+        for future in concurrent.futures.as_completed(future_to_url):
+            url = future_to_url[future]
+            try:
+                proxy_list = future.result()
+                for proxy in proxy_list:
+                    if proxy not in proxies:
+                        proxies.append(proxy)
+            except:
+                pass
+
+    return proxies
+
+
 def validate(proxy, type='http'):
     # Check regex
     return None
diff --git a/tests/data/proxies.txt b/tests/data/proxies1.txt
similarity index 100%
rename from tests/data/proxies.txt
rename to tests/data/proxies1.txt
diff --git a/tests/data/proxies2.txt b/tests/data/proxies2.txt
new file mode 100644
index 0000000..2ca6828
--- /dev/null
+++ b/tests/data/proxies2.txt
@@ -0,0 +1,5 @@
+127.0.0.1:9000
+garbage line lol
+127.0.0.1:9001
+username:pa$$@word@127.0.0.1:9002
+127.0.0.1:9999
\ No newline at end of file
diff --git a/tests/test_harvester.py b/tests/test_harvester.py
index a34e00b..d8ad2e8 100644
--- a/tests/test_harvester.py
+++ b/tests/test_harvester.py
@@ -1,7 +1,7 @@
 import subprocess
 import time
 import pytest
-from harvester.proxy import fetch_list
+from harvester.proxy import fetch_list, fetch_all
 
 
 @pytest.fixture(scope='session', autouse=True)
@@ -16,17 +16,24 @@ def start_web_server():
 
 def test_fetch_list():
     expected = ['127.0.0.1:9000', '127.0.0.1:9001', 'username:pa$$@word@127.0.0.1:9002']
-    result = fetch_list('http://localhost:8888/proxies.txt')
+    result = fetch_list('http://localhost:8888/proxies1.txt')
     assert result == expected
 
 
 def test_fetch_list_fail():
     expected = []
-    result = fetch_list('http://localhost:12345/proxies.txt')
+    result = fetch_list('http://localhost:12345/proxies1.txt')
     assert result == expected
 
 
 def test_fetch_list_only_valid():
     expected = ['127.0.0.1:9000', '127.0.0.1:9001', 'username:pa$$@word@127.0.0.1:9002']
-    result = fetch_list('http://localhost:8888/proxies.txt')
+    result = fetch_list('http://localhost:8888/proxies1.txt')
     assert result == expected
+
+
+def test_fetch_all():
+    expected = ['127.0.0.1:9000', '127.0.0.1:9001', 'username:pa$$@word@127.0.0.1:9002', '127.0.0.1:9999']
+    result = fetch_all(['http://localhost:8888/proxies1.txt', 'http://localhost:8888/proxies2.txt'])
+    for proxy in expected:
+        assert proxy in result