Robtex

Up: 185.81.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.81.228.0/23
Down right: 185.81.230.0/23

IP	Type	Hostname
185.81.228.17	A+PTR	mail01.hops.hr
185.81.228.18	A+PTR	mail02.hops.hr
185.81.228.21	A+PTR	dns1.hops.hr
185.81.228.22	A	dns2.hops.hr
185.81.228.23	A+PTR	www.hops.hr
185.81.228.23	A	hops.hr
185.81.228.26	A	webmail.hops.hr