Just in case, I'd remove all #'s and spaces... Second, it could just be that one of the lists links no longer works, and that's what's causing the 404? You can run your list through
@SomeWhereOverTheRainBow and my Skynet filter validator to see what it's failing on?
Filter Validator v0.7 A collaborative project between @Viktor Jaep and @SomeWhereOverTheRainBow! Filter Validator tests the IPv4 addresses (and IPv6 if present) on a given filter list that are to be used with the Skynet Firewall running on Asus-Merlin Firmware in order to block...
www.snbforums.com
Also... as a side-note, I'm pretty sure that skynet has an upper limit on the number of IPs that can be on the blocklist, and don't believe it can exceed 500,000. Just so you're aware.