diff --git a/tools/diagnostics/domain-lookup.sh b/tools/diagnostics/domain-lookup.sh
new file mode 100755
index 0000000..4497bac
--- /dev/null
+++ b/tools/diagnostics/domain-lookup.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+for target in $@; do
+	ip=$(dig $target +short)
+	printf "%-20s -> %20s (%s)\n" "$target" "$(dig -x $ip +short)" "$ip"
+done