http://qs1969.pair.com?node_id=1074817


in reply to Non-empty strings treated as null?!!

Just being pedantic but .0 is the network address and .255 the broadcast so you don't need to test these.
On that note, if you need to block a whole range can the product not take a network address, so adding 136.169.192.0 would block the whole range? (Or something similar).