# pip index > Inspect information available from package indexes. > More information: . - List all available versions of a package: `pip index versions {{package}}` - List versions from a specific index: `pip index versions {{package}} --index-url {{https://test.pypi.org/simple/}}` - Include pre-release versions: `pip index versions {{package}} --pre` - Include an additional index: `pip index versions {{package}} --extra-index-url {{https://example.com/simple/}}` - List versions for a specific platform: `pip index versions {{package}} --platform {{linux_x86_64}}`