NPM 11.01 Reverse DNS on multicast groups?

Greetings, I am running NPM 11.01. We monitor several hundred multicast groups and monitoring is working fine. I would, however, like to have NPM perform a reverse DNS lookup on the multicast groups (239.x.x.x addresses) to self populate the 'name' field of the multicast group IP table. The addresses are loaded into our DNS server and I can successfully perform a reverse lookup from the server command prompt using nslookup. I do have 'perform reverse DNS lookup on non-static nodes' option selected under polling options. However, I don't know if multicast groups are covered under this feature and category. Is there a way to make this happen? This would make my day! Thanks very much.