Port 1138 is not a well-known or registered port number, so it is not associated with any specific application or protocol. It may be used by custom or proprietary applications in certain situations.
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 1138 | tcp | encrypted_admin | encrypted admin requests | REGISTERED PORT |
| Port 1138 | udp | encrypted_admin | encrypted admin requests | REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
| Port | Protocol (TCP/UDP) | Description |