Not a plugin no. But thee are plenty ways of getting hold of the IDs depending on where and when you need them. What is your requirement?

i know you can get the ids from phpmyadmin but if you got a lot of forums then it can be a pain just wondering if there was an easier way?

Well – this was why i asked what the requirement was. I.e., did you need to get hold of them for some code you were writing. Or just to look at them and find what they are.

If the latter then they are clearly shown in the listing in the forum admin > Forums > Manage Groups and Forums.

If the former then again, let me know what you are trying to do and I can tell you how to get hold of the ID’s.