# ProtocolLab HQ

HTTP codes Ports

UDP Port

123 NTP

Network Time Protocol — synchronises clocks across devices and networks.

Protocol: UDP · Port: 123

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.