diff --git a/bandura.json b/bandura.json
index 6e03e8d..8d24d9a 100644
--- a/bandura.json
+++ b/bandura.json
@@ -8,8 +8,8 @@
     "fd92:58b6:2b2::/48": {
       "description": "Bandura Communications",
       "dns": {
-        "nserver": "ns1.bandura.crxn",
-        "ds": "3115 15 2 37C7191FD4573523AAECDAAA127B983191B8F06C9CF0270C6B15CFFD609E8AB7"
+        "nserver": ["ns1.bandura.crxn"],
+        "ds": ["3115 15 2 37C7191FD4573523AAECDAAA127B983191B8F06C9CF0270C6B15CFFD609E8AB7"]
       },
       "max-len": "48",
       "device": {
diff --git a/schema.json b/schema.json
index 86727a6..9932459 100644
--- a/schema.json
+++ b/schema.json
@@ -37,12 +37,22 @@
               "type": "object",
               "properties": {
                 "nserver": {
-                  "type": "string",
-                  "format": "hostname"
+                  "type": "array",
+                  "items": {
+                    "type": "string",
+                    "format": "hostname"
+                  },
+                  "minItems": 1,
+                  "uniqueItems": true
                 },
                 "ds": {
-                  "type": "string",
-                  "pattern": "\\d{1,10} ([3-9]|1[0-6]) [1-4] [\\dA-F ]{40,384}"
+                  "type": "array",
+                  "items": {
+                    "type": "string",
+                    "pattern": "\\d{1,10} ([3-9]|1[0-6]) [1-4] [\\dA-F ]{40,384}"
+                  },
+                  "minItems": 1,
+                  "uniqueItems": true
                 }
               },
               "required": [