diff --git a/whoisdb/helpers.py b/whoisdb/helpers.py
index 0fe8429..a2ed3a0 100644
--- a/whoisdb/helpers.py
+++ b/whoisdb/helpers.py
@@ -109,7 +109,7 @@ def findInDatabase(rawValue):
 
 	# domain?
 	if rawValue.endswith("DN") or rawValue.endswith("DN."):
-		value = rawValue
+		value = rawValue.lower()
 		if not value.endswith("."):
 			value += "."
 
diff --git a/whoisdb/validators.py b/whoisdb/validators.py
index bf62130..fc081ae 100644
--- a/whoisdb/validators.py
+++ b/whoisdb/validators.py
@@ -32,7 +32,7 @@ class HandleValidatorWithSuffix(validators.RegexValidator):
 
 def IP46CIDRValidator(value):
 	if not re.match(r"[0-9a-fA-F:.]+/[0-9]+", value):
-		raise ValidationError("Address needs to be a subnet in the format of ip/cidr")
+		raise ValidationError("Address needs to be a subnet in the format of ip/prefix")
 
 	try:
 		ipaddress.ip_network(value)