diff --git a/aws-experiment-launch/collect_public_ips.py b/aws-experiment-launch/collect_public_ips.py
new file mode 100644
index 000000000..58b9ee04a
--- /dev/null
+++ b/aws-experiment-launch/collect_public_ips.py
@@ -0,0 +1,22 @@
+import argparse
+import sys
+
+from utils import utils
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description='This script helps you to collect public ips')
+    parser.add_argument('--region', type=str, dest='region_number',
+                        default="4", help="region number")
+    parser.add_argument('--node_name_tag', type=str,
+                        dest='node_name_tag', default='4-NODE-23-36-01-2018-07-05')
+    parser.add_argument('--region_config', type=str,
+                        dest='region_config', default='configuration.txt')
+    parser.add_argument('--file_output', type=str,
+                        dest='file_output', default='raw_ip.txt')
+    args = parser.parse_args()
+
+    ip_list = utils.collect_public_ips(args.region_number, args.node_name_tag, args.region_config)
+    with open(args.file_output, "w") as fout:
+        for ip in ip_list:
+            fout.write(ip + "\n")
+
diff --git a/aws-experiment-launch/raw_ip.txt b/aws-experiment-launch/raw_ip.txt
new file mode 100644
index 000000000..e26548d6d
--- /dev/null
+++ b/aws-experiment-launch/raw_ip.txt
@@ -0,0 +1,5 @@
+34.214.244.37
+34.220.54.177
+54.201.44.15
+54.202.250.175
+34.217.95.116
diff --git a/aws-experiment-launch/utils/__init__.py b/aws-experiment-launch/utils/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/aws-experiment-launch/utils/utils.py b/aws-experiment-launch/utils/utils.py
index 5bf70f225..459ca9a90 100644
--- a/aws-experiment-launch/utils/utils.py
+++ b/aws-experiment-launch/utils/utils.py
@@ -57,7 +57,8 @@ def generate_distribution_config(shard_num, client_num, ip_list, config_filename
                 fout.write("%s 9000 validator %d\n" % (ip_list[i], validator_id % shard_num))
                 validator_id = validator_id + 1
 
-if __name__ == "__main__":
-    ip_list = collect_public_ips('4', "4-NODE-23-36-01-2018-07-05", "configuration.txt")
-    print ip_list
-    generate_distribution_config(2, 1, ip_list, "config_test.txt")
+# used for testing only.
+# if __name__ == "__main__":
+#     ip_list = collect_public_ips('4', "4-NODE-23-36-01-2018-07-05", "configuration.txt")
+#     print ip_list
+#     generate_distribution_config(2, 1, ip_list, "config_test.txt")