ok i got it now and it works perfectly
dig @localhost -p 5354nostr:npub1ykal2phgzf6ljmql6l8khmf0ekf6ny0582r89m00j9vjt8qezhjqqpa3dl.nostr
nostr:npub1ykal2phgzf6ljmql6l8khmf0ekf6ny0582r89m00j9vjt8qezhjqqpa3dl.nostr. 3600 IN A 192.168.201.174
have some sites who use nostr domain name to test ?