diff --git a/tests/test_geo_file.py b/tests/test_geo_file.py
new file mode 100644
index 0000000..d142edc
--- /dev/null
+++ b/tests/test_geo_file.py
@@ -0,0 +1,27 @@
+from dzgui.config.ipdb import get_ipdb
+from pathlib import Path
+import os
+import pytest
+import tempfile
+
+
+@pytest.mark.slow
+def test_stripping():
+    d = tempfile.TemporaryDirectory()
+    path = Path(d.name).joinpath("ips.csv")
+    get_ipdb(path)
+    with open(path, "rb") as f:
+        first = f.readline().decode().rstrip()
+        try:
+            f.seek(-2, os.SEEK_END)
+            while f.read(1) != b"\n":
+                f.seek(-2, os.SEEK_CUR)
+        except OSError:
+            f.seek(0)
+        last = f.read().decode().rstrip()
+
+        first_els = first.split(",")
+        last_els = last.split(",")
+
+        assert first_els[0] == "0.0.0.0"
+        assert last_els[0] == "224.0.0.0"