The present disclosure relates generally to systems and methods for protecting emergency response services in telecommunications systems from attack. In one example, a system may include a network, a token generator, and a token validator. The network may be configured to communicate with a client via a network interface. The token generator is coupled to the network and configured to generate at least one token based on information associated with the client. The token contains sufficient information for the network to independently validate the client when an emergency response service request is sent by the client to the network. The token validator is coupled to the network and configured to perform a validation process on the token when the token is sent by the client to the network over the network interface. The network is configured to connect the emergency response service request only if the token is validated.