In one embodiment, techniques to validate certificates using authentication, authorization, and accounting (AAA) services are provided. A service receives a request from a requester for validation of a certificate. The request may include the certificate associated with the requester. The servicer creates a AAA request that includes the certificate. The AAA request is then sent to the AAA server. A response is then received from the AAA server that includes a result of the certificate validation and also AAA attributes associated with any AAA services performed. The servicer may then validate the proof of possession of the private key or perform other type of authentication calculations after receiving the response from the AAA server if the response indicates the certificate was validated. The servicer can then perform an action based on the certificate validation and AAA attributes.