Looking Glass server

Looking Glass servers (LG servers) are servers on the Internet running one of a variety of publicly available Looking Glass software implementations. They are commonly deployed by autonomous systems (AS) to offer access to their routing infrastructure in order to facilitate debugging network issues. A Looking Glass server is accessed remotely for the purpose of viewing routing information. Essentially, the server acts as a limited, read-only portal to routers of whatever organization is running the LG server.

Typically, Looking Glass servers are run by autonomous systems like Internet service providers (ISPs), Network Service Providers (NSPs), and Internet exchange points (IXPs).