diff --git a/nix/subnet.nix b/nix/subnet.nix
new file mode 100644
index 000000000..4a4ea60
--- /dev/null
+++ b/nix/subnet.nix
@@ -0,0 +1,20 @@
+{ pkgs ? import <nixpkgs> {}
+}:
+
+{
+  # List of all IP addresses in a subnet
+  range = subnet:
+    import (
+      pkgs.runCommandLocal "subnet-${subnet}.nix" {
+        nativeBuildInputs = [ pkgs.nmap ];
+      } ''
+        (
+          echo "["
+          for i in $(nmap -sL ${pkgs.lib.optionalString (builtins.match ".*:.*" subnet != null) "-6"} ${subnet} -n -oG - | grep Status: | cut -d " " -f 2); do
+            echo \"$i\"
+          done
+          echo "]"
+        ) > $out
+      ''
+    );
+}