Registered · Cross-platform

6881 BitTorrent

TCP Unofficial
UDP Unofficial
SCTP —
DCCP —

What it is

BitTorrent peer transfer (6881–6889 range).

When / why

P2P file sharing. Frequently blocked on corporate networks.

Protocol status detail

TransportStatusMeaning
TCP Unofficial Not assigned by IANA, but standardized, specified, or widely used on this port.
UDP Unofficial Not assigned by IANA, but standardized, specified, or widely used on this port.
SCTP — Not applicable for this transport.
DCCP — Not applicable for this transport.
« 6789 Ubiquiti UniFi 6969 BitTorrent tracker »

Port range

Registered (1024–49151). Assigned by IANA on request; usable without elevated privileges on most systems.

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