diff --git a/src/config/validator.json b/src/config/validator.json
index aaab291..73e2931 100644
--- a/src/config/validator.json
+++ b/src/config/validator.json
@@ -1,4 +1,8 @@
 {
+  "host":
+  {
+    "regex": "/^0{0,1}[2-3][a-f0-9]{0,2}:/"
+  },
   "page":
   {
     "title":