Port 687 is commonly used for the communication between Apple macOS and Apple iOS devices. It is used by the “Bonjour” or “mDNSResponder” service to discover and connect with devices on a local network. It may also be used for other applications or services that require communication between devices on a network.
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 687 |
tcp |
asipregistry |
asipregistry |
WELL KNOWN PORT |
Port 687 |
udp |
asipregistry |
asipregistry |
WELL KNOWN PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
| Port | Protocol (TCP/UDP) | Description |