Novel tools and techniques are provided for implementing prevention of foreign initiated fraudulent or unauthorized use of calling service. In various embodiments, a computing system might receive, from a first user device associated with an originating party, a request to access a first account of a calling system and an access code. Based on a determination that the received access code is valid, the computing system might determine whether the first user device associated with the originating party is located in a foreign country. If so, the computing system might determine whether a database contains a configurable flag indicating that international access is not allowed for the first account. If so, the computing system might initiate one or more first actions. If not, the computing system might provide the first user device with access to the first account of the calling system.