Automated caller identifier from contact lists of a user's contacts

A computing device comprising:

• a processor;
• memory coupled to the processor;
• and
• an identifier application via which the computing device is configured to effectively expand a first contact list that comprises contacts to include at least a portion of at least one of the contacts' contact lists, where the first contact list is associated with a user of the computing device, where the first contact list is effectively expanding based on:
• sending, in response to receiving a first message from a first device, a second message to a second device that is associated with the at least one of the contacts, where the second message comprises a request for identity information that identifies a sender of the first message;
• and
• receiving, in response to the sending, the requested identity information.

At least one memory device that comprises computer-executable instructions that, based on execution by a processor of a computing device, configure the computing device to perform actions comprising:

• effectively expanding, by the computing device, a first contact list that comprises contacts to include at least a portion of at least one of the contacts' contact lists, where the first contact list is associated with a user of the computing device, where the effectively expanding is based on:
• sending, by the computing device in response to receiving a first message from a first device, a second message to a second device that is associated with the at least one of the contacts, where the second message comprises a request for identity information that identifies a sender of the first message;
• and
• receiving, by the computing device in response to the sending, the requested identity information.