The MIME type application/a11 is used to represent an AOL Instant Messenger (AIM) Graphic file and the encryption related to it. The category for this MIME type is "application".

An AOL Instant Messenger (AIM) Graphic is a file format used by the AOL Instant Messenger (AIM) for carrying graphics that can be used by the AIM software. The graphics are usually in the PNG (Portable Network Graphics) format. The file extension used for these files is A11. The AOL Instant Messenger, popularly known as AIM, is client software for the AOL Instant Messaging platform.

The AIM client supports integration with various other social networks like Twitter and Facebook. Like other instant messenger clients, it continuously fetches and syncs information with other networks and clients to keep the information displayed on the client updated in real time. It also supports user end encryption and file transfer through the AIM platform.

The graphics used on this software is mainly for the internal use of the program to display various icons and graphics on the client. Client does however support customizations at levels of certain areas of the GUI (like the "Buddy List") and some icons (Buddy Icons).