The list of zones that #peqzone cannot be used for is controlled in the source:
command.cpp, line 1507 in Revision 342:
	Code:
	if(zoneid == 0 || zoneid == 26 || zoneid == 39 || zoneid == 187 || zoneid == 188 ||
  zoneid == 71 || zoneid == 162 || zoneid == 76 || zoneid == 186 || zoneid == 105 ||
  zoneid == 124 || zoneid == 89 || zoneid == 128 || zoneid == 189 || zoneid == 108 ||
   zoneid == 158 || zoneid  == 200 ||   zoneid == 201 || zoneid > 228 || (zoneid > 203 && zoneid < 224)) {
                       c->Message(13, "You cannot use this command to enter that zone!");
                       return;
 zoneid 124 being templeveeshan. Unless you can compile the source code, you can't change which zones aren't allowed.