Port 5354 is often used by the multicast DNS (mDNS) protocol, which is used for name resolution in local networks. It allows devices to discover and communicate with each other without the need for a centralized DNS server. Some applications that use mDNS include Apple’s Bonjour service, Chromecast, and some smart home devices.
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 5354 |
tcp |
mdnsresponder |
Multicast DNS Responder |
REGISTERED PORT |
Port 5354 |
udp |
mdnsresponder |
Multicast DNS Responder |
REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
Port | Protocol (TCP/UDP) | Description |