be located on a single device or computing platform or may be distributed across multiple devices or computing platforms. Figure 1 is a network diagram illustrating a routing node for dynamically learning foreign telecommunications network mobility management node information and automatically provisioning a security database using the learned node information; Figure 2 is a message flow diagram illustrating a learn mode of operation of the routing node illustrated in Figure 1 for dynamically learning foreign mobility management node information and automatically provisioning a security database using the learned node information; Figure 3 is a message flow diagram illustrating a test mode of operation of the routing node illustrated in Figure 1 in which validation pass and fail counts are updated in response to successful and unsuccessful validations of messages from foreign mobility management nodes; Figure 4 is a message flow diagram illustrating an active node of operation of the routing node illustrated in Figure 1 in which new entries are not added to a dynamic profile table, validation pass and fail counts are updated, mobility management node security status is updated, and messages are passed or discarded based on dynamically learned node security status; Figure 5 is a message flow diagram illustrating operation of the routing node illustrated in Figure 1 for automatically learning the identity of a foreign HLR; and Figure 6 is a flow chart illustrating exemplary overall operation of the routing node illustrated in Figure 1 in dynamically learning and using foreign telecommunications network mobility management node information. The subject matter described herein includes a routing node, which may be a gateway STP for SS7 networks or a DSR for Diameter networks, that is capable of dynamically learning foreign mobility management node DETAILED DESCRIPTION BRIEF DESCRIPTION OF THE DRAWINGS