Some results: The awk-thing uses just over 1 GB memory for 10 million addresses. So for
1.5 billion addresses, a 256 GB server should be enough. At AWS, that would cost a few dollars per hour.
As a FYI, you generally will not want to host files on a server. You will probably want to host files in a
storage bucket that can be accessed by a server.
If you want to update a file that takes a lot of resources, you can create a VM, execute a script that updates the file, and uploads it to a S3 (on AWS) bucket. You would then be able to access that file using another VM that takes fewer resources.
Separately, sorting lists are not scalable, period. There are some things you can do to increase the speed, such as keep the list in RAM, or cutting the number of instances the entire list is reviewed, but you ultimately cannot sort an unordered very large list.