diff --git a/pkg/rings/rings.go b/pkg/rings/rings.go
index 0f1e8a4..6569105 100644
--- a/pkg/rings/rings.go
+++ b/pkg/rings/rings.go
@@ -2,6 +2,12 @@
 // of a cluster
 package rings
 
+import (
+	"syscall"
+
+	"darvaza.org/core"
+)
+
 const (
 	// RegionMax indicates the highest number that can be used for a [RegionID].
 	RegionMax = (1 << 4) - 1
@@ -35,3 +41,9 @@ func (n NodeID) Valid() bool { return n > 0 && n <= NodeMax }
 
 // ValidZero tells a [NodeID] is within the valid range for a gateway.
 func (n NodeID) ValidZero() bool { return n > 0 && n <= NodeZeroMax }
+
+// ErrOutOfRange is an error indicating the value of a field
+// is out of range.
+func ErrOutOfRange[T ~int | ~uint32](value T, field string) error {
+	return core.Wrap(syscall.EINVAL, "%s out of range (%v)", field, value)
+}