Robtex

Up: 188.255.224.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 188.255.232.0/22
Down right: 188.255.236.0/22

IP	Type	Hostname
188.255.232.66	PTR	free-232-66.mediaworksit.net
188.255.233.129	PTR	free-233-129.mediaworksit.net
188.255.233.129	A	autodiscover.nkosk.rs
188.255.233.129	A	mail1.nkosk.co.rs
188.255.233.163	PTR	free-233-163.mediaworksit.net
188.255.233.163	A	ns5.nlb.rs
188.255.233.195	A+PTR	mail.infostan.rs
188.255.233.195	A	ns.infostan.co.rs
188.255.233.202	PTR	free-233-202.mediaworksit.net
188.255.233.202	A	veles.zvonce.rs
188.255.233.202	A	dc-9136331246e7.cengicvila.com
188.255.234.17	PTR	free-234-17.mediaworksit.net
188.255.234.58	PTR	free-234-58.mediaworksit.net
188.255.234.146	PTR	free-234-146.mediaworksit.net
188.255.234.154	PTR	free-234-154.mediaworksit.net
188.255.235.178	A	naximedia.net
188.255.235.178	A	naximedia.com
188.255.235.179	A	naximedia.net
188.255.235.179	A	naximedia.com
188.255.236.2	PTR	free-236-2.mediaworksit.net
188.255.236.25	PTR	free-236-25.mediaworksit.net
188.255.236.26	PTR	free-236-26.mediaworksit.net
188.255.236.105	PTR	free-236-105.mediaworksit.net
188.255.236.145	PTR	free-236-145.mediaworksit.net
188.255.236.168	PTR	free-236-168.mediaworksit.net
188.255.236.184	PTR	free-236-184.mediaworksit.net
188.255.236.227	PTR	free-236-227.mediaworksit.net
188.255.237.25	PTR	free-237-25.mediaworksit.net
188.255.237.48	PTR	free-237-48.mediaworksit.net
188.255.237.59	A	winapp24.pl
188.255.237.138	PTR	free-237-138.mediaworksit.net
188.255.238.67	PTR	free-238-67.mediaworksit.net
188.255.238.184	PTR	free-238-184.mediaworksit.net
188.255.238.187	PTR	free-238-187.mediaworksit.net
188.255.238.203	PTR	free-238-203.mediaworksit.net
188.255.239.19	PTR	free-239-19.mediaworksit.net
188.255.239.34	PTR	free-239-34.mediaworksit.net
188.255.239.48	PTR	free-239-48.mediaworksit.net
188.255.239.72	PTR	free-239-72.mediaworksit.net