# ProtocolLab HQ

HTTP codes Ports

TCP Port

20 FTP data

File Transfer Protocol data channel — carries the actual file contents (control is on port 21).

Protocol: TCP · Port: 20

ProtocolLab HQ — HTTP codes and ports, looked up fast.

A quick developer reference for HTTP status codes and common network ports, compiled from the relevant RFCs and IANA registries. Port assignments and status semantics occasionally change; check the current standard when it matters.