A Point of Contact is the identification of, and means of communication with, person(s) and organizations(s) associated with the resource(s). A POC can be a person or a department serving as the coordinator or focal point of information concerning an activity or program.
POC's are used in many cases where information is time-sensitive and accuracy is important. For example, they are used in Whois

WHOIS

WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information. The protocol stores...

databases.