Port 3857 is used for web mapping services, specifically for the Web Mercator projection. It is commonly known as the “Google Maps projection” and is used by many online mapping services, including Google Maps and OpenStreetMap. The port is used to allow communication between the web mapping service and the client device requesting the map information.
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 3857 |
tcp |
trap-port |
Trap Port |
REGISTERED PORT |
Port 3857 |
udp |
trap-port |
Trap Port |
REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
| Port | Protocol (TCP/UDP) | Description |