diff --git a/core/api.go b/core/api.go
index db88168..b59e6de 100644
--- a/core/api.go
+++ b/core/api.go
@@ -161,8 +161,14 @@ func (caller apiCaller) uploadAPI(w http.ResponseWriter, r *http.Request) error
 func (caller apiCaller) blockAPI(w http.ResponseWriter, r *http.Request) error {
 	mg := caller.mg
 	if r.Method == "GET" {
-		enc := json.NewEncoder(w)
-		enc.Encode(mg.bl.all())
+		target, ok := gocommon.ReadObjectIDFormValue(r.Form, "accid")
+		if ok {
+			json.NewEncoder(w).Encode(mg.bl.all())
+		} else if !target.IsZero() {
+			if blocked, ok := mg.bl.get(target); ok && blocked != nil {
+				json.NewEncoder(w).Encode(blocked)
+			}
+		}
 	} else if r.Method == "PUT" {
 		body, _ := io.ReadAll(r.Body)
 
diff --git a/core/member_container.go b/core/member_container.go
index 2c4eaa4..7259ce8 100644
--- a/core/member_container.go
+++ b/core/member_container.go
@@ -42,6 +42,14 @@ func (p *memberContainerPtr[K, T]) add(m T) {
 	atomic.StorePointer(&p.ptr, unsafe.Pointer(&next))
 }
 
+func (p *memberContainerPtr[K, T]) get(key K) (T, bool) {
+	ptr := atomic.LoadPointer(&p.ptr)
+	src := (*map[K]T)(ptr)
+
+	out, found := (*src)[key]
+	return out, found
+}
+
 func (p *memberContainerPtr[K, T]) remove(key K) {
 	ptr := atomic.LoadPointer(&p.ptr)
 	src := (*map[K]T)(ptr)