diff --git a/podkop/files/usr/bin/podkop b/podkop/files/usr/bin/podkop
index 92eb9a9..7283c8f 100755
--- a/podkop/files/usr/bin/podkop
+++ b/podkop/files/usr/bin/podkop
@@ -688,33 +688,6 @@ sing_box_inbound_proxy() {
     }'  > $SING_BOX_CONFIG
 }
 
-get_doh_url() {
-    local dns_server="$1"
-    local url=""
-
-    # Special case for Quad9 servers
-    if echo "$dns_server" | grep -q "quad9.net" || \
-       echo "$dns_server" | grep -qE "^9\.9\.9\.(9|10|11)$|^149\.112\.112\.(112|10|11)$|^2620:fe::(fe|9|10|11)$|^2620:fe::fe:(10|11)$"; then
-        url="https://$dns_server:5053/dns-query"
-        if curl --connect-timeout 3 -s -o /dev/null -w "%{http_code}" -H "accept: application/dns-json" "$url?name=example.com&type=A" 2>/dev/null | grep -q "200"; then
-            echo "$url"
-            return 0
-        fi
-    fi
-
-    # Try root path
-    url="https://$dns_server"
-    if curl --connect-timeout 3 -s -o /dev/null -w "%{http_code}" -H "accept: application/dns-json" "$url?name=example.com&type=A" 2>/dev/null | grep -q "200"; then
-        echo "$url"
-        return 0
-    fi
-
-    # Try standard DoH path first (most common)
-    url="https://$dns_server/dns-query"
-    echo "$url"
-    return 0
-}
-
 sing_box_dns() {
     local dns_type
     local dns_server
@@ -738,26 +711,25 @@ sing_box_dns() {
     fi
     
     log "Configure DNS in sing-box"
-
-    local dns_address=""
-    if [ "$dns_type" = "doh" ]; then
-        dns_address=$(get_doh_url "$dns_server")
-    elif [ "$dns_type" = "dot" ]; then
-        dns_address="tls://$dns_server"
-    else
-        dns_address="$dns_server"
-    fi
     
     server_json=$(jq -n \
         --arg type "$dns_type" \
-        --arg address "$dns_address" \
+        --arg server "$dns_server" \
         --arg resolver "$resolver_tag" \
         --arg is_ip "$is_ip" \
         '{
             "servers": [
                 {
                     "tag": "dns-server",
-                    "address": $address,
+                    "address": (
+                        if $type == "doh" then
+                            "https://" + $server + "/dns-query"
+                        elif $type == "dot" then
+                            "tls://" + $server
+                        else
+                            $server
+                        end
+                    ),
                     "detour": "direct-out"
                 } + (
                     if $is_ip == "0" then
@@ -2106,8 +2078,20 @@ check_dns_available() {
     fi
 
     if [ "$dns_type" = "doh" ]; then
-        local doh_url=$(get_doh_url "$dns_server")
-        local result=$(curl --connect-timeout 5 -s -H "accept: application/dns-json" "$doh_url?name=itdog.info&type=A")
+        local result=""
+        
+        if echo "$dns_server" | grep -q "quad9.net" || \
+           echo "$dns_server" | grep -qE "^9\.9\.9\.(9|10|11)$|^149\.112\.112\.(112|10|11)$|^2620:fe::(fe|9|10|11)$|^2620:fe::fe:(10|11)$"; then
+            result=$(curl --connect-timeout 5 -s -H "accept: application/dns-json" "https://$dns_server:5053/dns-query?name=itdog.info&type=A")
+        else
+            result=$(curl --connect-timeout 5 -s -H "accept: application/dns-json" "https://$dns_server/dns-query?name=itdog.info&type=A")
+            if [ $? -eq 0 ] && echo "$result" | grep -q "data"; then
+                is_available=1
+                status="available"
+            else
+                result=$(curl --connect-timeout 5 -s -H "accept: application/dns-json" "https://$dns_server/resolve?name=itdog.info&type=A")
+            fi
+        fi
         
         if [ $? -eq 0 ] && echo "$result" | grep -q "data"; then
             is_available=1