Im chuffed to bits after downloading an ATC Simulator online (wont give the link but its easily found) and the intruction PDF that comes with that is by farrr the most comprehensive information I have ever seen regarding which frequencies corrospond to which sectors and where those sectors exist.
One major thing to note though is that there are different secors for different heights which arent necessarily the same area covered as the one below, so things get very messy if they were to be overlayed as outlines on ANRB.
If anyone wants to know where I obtained this, just give me a shout,
JB