Robtex

Up: 193.203.16.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 193.203.18.0/24
Down right: 193.203.19.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.203.18.2	A+PTR	iritel.iritel.bg.ac.rs
193.203.18.2	A	iritel.iritel.co.rs
193.203.18.2	A	ns.iritel.co.rs
193.203.18.24	PTR	natasa-stanic.iritel.bg.ac.rs
193.203.18.79	PTR	rpk03.iritel.bg.ac.rs
193.203.18.89	PTR	beli.iritel.bg.ac.rs
193.203.18.94	PTR	zoranj.iritel.bg.ac.rs
193.203.18.122	PTR	mail.iritel.bg.ac.rs
193.203.18.122	A	mail.iritel.co.rs
193.203.18.122	A	mail.iritel.rs
193.203.18.241	PTR	vladap.iritel.bg.ac.rs
193.203.19.47	PTR	ninkolap.iritel.bg.ac.rs
193.203.19.51	PTR	zoranl.iritel.bg.ac.rs
193.203.19.145	PTR	wpesicf.iritel.bg.ac.rs
193.203.19.215	PTR	viritelwww.iritel.bg.ac.rs
193.203.19.215	A	viritelwww.iritel.com
193.203.19.215	A	viritelwww.iritel.co.rs
193.203.19.217	PTR	stviri.iritel.bg.ac.rs
193.203.19.250	PTR	mp1590b.iritel.bg.ac.rs