diff --git a/lib/default.nix b/lib/default.nix
index 49dc71f..29e074a 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -5,10 +5,6 @@
 {
   isPrivateDomain = domain: domain |> lib.hasSuffix ".splitleaf.de";
 
-  subdomainOf = domain: domain |> lib.splitString "." |> lib.head;
-
-  rootDomainOf = domain: domain |> lib.splitString "." |> lib.tail |> lib.concatStringsSep ".";
-
   listNixFilesRecursively =
     dir: dir |> lib.filesystem.listFilesRecursive |> lib.filter (lib.hasSuffix ".nix");