This website gives you the ability to list your iKnights code for free and add any of the members to your guild. You can resubmit your code to put it to the top once every hour. The top submitters list shows the top 10 most submitted codes.
Currently there are 1277 iKnight codes in the database.
152-760-978 (2435)
163-050-666 (2432)
192-728-241 (1942)
225-576-439 (1677)
344-598-319 (1623)
281-654-268 (1615)
224-262-157 (1611)
230-514-071 (1305)
124-458-974 (1297)
164-528-096 (1292)
431-019-693
344-598-319
394-221-795
227-742-061
163-050-666
365-116-358
236-333-796
395-479-212
367-847-807
358-738-954
291-117-431
284-621-649
391-417-834
135-855-227
230-488-770
364-029-684
433-843-935
388-685-525
423-195-734
311-383-966
Complete list