This is an initial version of a module that wraps the SecurityTrails API. This should allow you to query each endpoint listed here. The API itself doesn't require any form of authentication and so should be fairly easy to use. The main point to bare in mind is on a free account you are limited to 50 requests per month!
It should be noted that this wrapper was tested with a free account. All functionality that requires premium accounts will be marked as Experimental as I couldn't test it fully. If there's any issues with these endpoints, let me know or feel free to open a PR!
Documentation can be found here