It may not be broken, but the default Jwhois package on RHEL and friends is not easy to use, and the results aren’t satisfactory. Why it is they dropped the original stand-alone client is beyond me. I can’t find anything on it.
What I can find is the source to the package and build it myself. Given all the stuff I’ve built and installed for developmental purposes on my RHEL 6.0-Beta box, I wasn’t too worried about dependencies. There is nothing to configure. You simply unzip and untar the tiny bundle. Step into the build directory and type “make” and “make install”. Job done.
And it works from the start without configuration.