Port 6881 is typically used by peer-to-peer file sharing programs such as BitTorrent for downloading and uploading files. It allows clients to communicate with each other and share files in a decentralized manner.
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 |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
Port | Protocol (TCP/UDP) | Description |
Port 6881 | BitTorrent part of full range of ports used most often |