diff --git a/acme.sh b/acme.sh
index d62f7007..4b20b708 100755
--- a/acme.sh
+++ b/acme.sh
@@ -3925,7 +3925,7 @@ _ns_lookup_ali() {
 }
 
 _ns_is_available_dp() {
-  if _get "https://dns.alidns.com" "" 1 >/dev/null 2>&1; then
+  if _get "https://doh.pub" "" 1 >/dev/null 2>&1; then
     return 0
   else
     return 1