Robtex

Up: 194.190.52.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 194.190.52.0/25
Down right: 194.190.52.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
194.190.52.2	A+PTR	ns1.alternativa.su
194.190.52.3	A+PTR	www.alternativa.su
194.190.52.4	A+PTR	mail.alternativa.su
194.190.52.7	PTR	saropto.ru
194.190.52.8	A+PTR	relay.alternativa.su
194.190.52.11	PTR	mail.infotech-c.ru
194.190.52.11	A	xn----7sbika4adclt1an.xn--p1ai
194.190.52.11	A	mail.galsweb.ru
194.190.52.15	A+PTR	mail.tdtom.ru
194.190.52.19	A+PTR	mail2.alternativa.su
194.190.52.19	A	ra-vverh.ru
194.190.52.19	A	masterpanel.ru
194.190.52.25	A	ns3.alternativa.su
194.190.52.25	A	hosting.alternativa.su
194.190.52.26	A	post.sgau.ru
194.190.52.34	PTR	host-34.alternativa.su
194.190.52.52	PTR	host-52.alternativa.su
194.190.52.52	A	ns2.alternativa.su
194.190.52.64	PTR	host-64.alternativa.su
194.190.52.74	PTR	mail2.nita-farm.ru
194.190.52.136	A	mail.infotech-c.ru
194.190.52.154	PTR	mail.niigaz.ru