diff --git a/scripts/hostblock_blame.py b/scripts/hostblock_blame.py
new file mode 100644
index 000000000..49a46aa84
--- /dev/null
+++ b/scripts/hostblock_blame.py
@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
+
+# Copyright 2014 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
+#
+# This file is part of qutebrowser.
+#
+# qutebrowser is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# qutebrowser is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.
+
+# pylint: disable=broad-except
+
+"""Check by which hostblock list a host was blocked."""
+
+import sys
+import io
+import os
+import os.path
+import configparser
+import urllib.request
+
+from PyQt5.QtCore import QStandardPaths
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), os.pardir))
+from qutebrowser.browser import adblock
+
+
+def main():
+    """Check by which hostblock list a host was blocked."""
+    if len(sys.argv) != 2:
+        print("Usage: {} <host>".format(sys.argv[0]), file=sys.stderr)
+        sys.exit(1)
+    confdir = QStandardPaths.writableLocation(QStandardPaths.ConfigLocation)
+    confdir = confdir.replace('/', os.sep)
+    if confdir.split(os.sep)[-1] != 'qutebrowser':
+        confdir = os.path.join(confdir, 'qutebrowser')
+    confpath = os.path.join(confdir, 'qutebrowser.conf')
+    parser = configparser.ConfigParser()
+    print("config path: {}".format(confpath))
+    successful = parser.read(confpath, encoding='utf-8')
+    if not successful:
+        raise IOError("configparser did not read files successfully!")
+    lists = parser['content']['host-block-lists']
+    for url in lists.split(','):
+        print("checking {}...".format(url))
+        raw_file = urllib.request.urlopen(url)
+        byte_io = io.BytesIO(raw_file.read())
+        f = adblock.get_fileobj(byte_io)
+        for line in f:
+            if sys.argv[1] in line:
+                print("FOUND {} in {}:".format(sys.argv[1], url))
+                print("    " + line.rstrip())
+
+
+if __name__ == '__main__':
+    main()