AWS: can I map ports to static ips?

I have free tier of AWS for testing. I want to host five websites for five different domains on one VM. I understand that I need five static ip addresses for A-name. And I not found that in AWS I can map, for example, port 81 to 11.11.11.11 and port 82 to 22.22.22.22 - because for A-name we can't set ip with port, for example 11.11.11.11:81

Now I can map to my VM (to one static ip) only one domain - how can I host another four sites at one VM? This is possible?