diff --git a/ppf.py b/ppf.py
index 54dc973..d5c72a4 100755
--- a/ppf.py
+++ b/ppf.py
@@ -6,7 +6,6 @@ import random, time
 import re
 import urllib
 import hashlib
-import ipcalc
 from ConfigParser import SafeConfigParser
 from requests.packages.urllib3.exceptions import InsecureRequestWarning
 requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
@@ -108,6 +107,11 @@ def proxyfind(sqlite = None):
 
 	sqlite.commit()
 
+def is_usable_ipv4(ip):
+	if ( ip.startswith("10.") or ip.startswith("192.168.") or ip.startswith("127.") or ip.startswith("0.")) or \
+	(ip.startswith("172.") and (int(ip.split(".")[1]) >= 16 and int(ip.split(".")[1]) <= 31)): return True
+	return False
+
 def proxyleech(sqlite, rows):
 	#print('entering proxyleech...')
 
@@ -119,7 +123,7 @@ def proxyleech(sqlite, rows):
 		for p in sorted(re.findall(r'[0-9]+(?:\.[0-9]+){3}:[0-9]+', cleanhtml(content))):
 			if p in uniques: continue
 			try:
-				if str(ipcalc.Network(p.split(':')[0]).subnet) != 'PRIVATE': uniques.append(p)
+				if not is_usable_ipv4(p.split(':')[0]): uniques.append(p)
 			except:
 				pass