Thread:Project:Support desk/Decoding IP Address Blocks/reply

Its documented at Manual:Ipblocks table. The 0x is probably an ascii (or utf-8 if you want to be technical, although probably not too many special chars there) field encoded in hexadecimal. The fact your getting this instead of letters that normal people can read is due to how you're using whatever program you're using to access your db. You should be able to find a converter online somewhere. The numeric fields starting with 2010 are dates in YYYYMMDDHHMMSS format.

If you need to do this sort of thing, you should maybe check out extension:Checkuser