Because looks strange especially if the traffic is 100% bad Best practice says avoid such info in records as does not aid debug since mix of dec and hex
Colin > On 14 Apr 2015, at 14:09, Nikolay Shopik <sho...@inblock.ru> wrote: > > How its weird? All these chars allowed in DNS records. > > On 14/04/15 15:36, Colin Johnston wrote: >> never saw hex in host dns records before. >> host-242.strgz.87.118.199.240.0xfffffff0.macomnet.net >> >> range is blocked non the less since bad traffic from Russia network ranges. >> >> Colin >>