Robtex

Up: 212.200.50.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.200.51.0/25
Down right: 212.200.51.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.200.51.4	PTR	4.51.static.tippnet.co.rs
212.200.51.26	PTR	26.51.static.tippnet.co.rs
212.200.51.38	PTR	38.51.static.tippnet.co.rs
212.200.51.54	PTR	54.51.static.tippnet.co.rs
212.200.51.68	PTR	68.51.static.tippnet.co.rs
212.200.51.84	PTR	84.51.static.tippnet.co.rs
212.200.51.86	PTR	86.51.static.tippnet.co.rs
212.200.51.99	PTR	99.51.static.tippnet.co.rs
212.200.51.108	PTR	108.51.static.tippnet.co.rs
212.200.51.110	PTR	110.51.static.tippnet.co.rs
212.200.51.129	PTR	smin-51-129.tippnet.co.rs
212.200.51.164	A+PTR	server.phiwa.com
212.200.51.209	A+PTR	mail.manufaktura.rs
212.200.51.209	A	mail.flexplmds.com
212.200.51.210	PTR	smin-51-210.tippnet.co.rs
212.200.51.210	A	elementa.rs
212.200.51.213	A	sm.manufaktura.rs
212.200.51.217	PTR	w4.tippnet.rs
212.200.51.217	A	www.montesori.org.rs
212.200.51.217	A	shop2.tippnet.rs
212.200.51.218	PTR	w5.tippnet.rs
212.200.51.218	A	medicinskasu.edu.rs
212.200.51.218	A	kucadelova.eu
212.200.51.226	A+PTR	su.subotica.rs
212.200.51.226	A	mail.subotica.rs
212.200.51.227	PTR	227.51.subotica.rs
212.200.51.252	A	test.manufaktura.rs
212.200.51.252	A	office.manufaktura.rs