IANA assigns port 1286 to netuitive.
sudo ss -tlnp 'sport = :1286'sudo ss -ulnp 'sport = :1286'sudo lsof -nP -i :1286sudo netstat -tlnp | grep ':1286 'netstat -ano | findstr :1286Get-NetTCPConnection -LocalPort 1286 -State Listen | Select LocalAddress,OwningProcessnc -vz -w 5 HOST 1286Test-NetConnection HOST -Port 1286nc -vzu -w 5 HOST 1286sudo ufw deny 1286/tcpsudo iptables -A INPUT -p tcp --dport 1286 -j DROPsudo nft add rule inet filter input tcp dport 1286 dropNew-NetFirewallRule -DisplayName 'Block TCP 1286' -Direction Inbound -Protocol TCP -LocalPort 1286 -Action Blocksudo ufw deny 1286/udpsudo iptables -A INPUT -p udp --dport 1286 -j DROPsudo nft add rule inet filter input udp dport 1286 dropNew-NetFirewallRule -DisplayName 'Block UDP 1286' -Direction Inbound -Protocol UDP -LocalPort 1286 -Action BlockAll port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.