Port 1221 is commonly used for remote administration of Oracle WebLogic Server through the WebLogic Server Administration Console or through the WebLogic Scripting Tool (WLST).
Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.
Official
| Port | Protocol (TCP/UDP) | Title | Description | Port Type |
| Port 1221 | tcp | sweetware-apps | SweetWARE Apps | REGISTERED PORT |
| Port 1221 | udp | sweetware-apps | SweetWARE Apps | REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
| Port | Protocol (TCP/UDP) | Description |