Robtex

Up: 195.96.230.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 195.96.230.0/25
Down right: 195.96.230.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
195.96.230.0	PTR	unknown.bas.bg
195.96.230.28	PTR	unknown.bas.bg
195.96.230.35	PTR	unknown.bas.bg
195.96.230.44	PTR	unknown.bas.bg
195.96.230.48	PTR	unknown.bas.bg
195.96.230.56	PTR	unknown.bas.bg
195.96.230.61	PTR	unknown.bas.bg
195.96.230.65	PTR	unknown.bas.bg
195.96.230.73	PTR	unknown.bas.bg
195.96.230.74	PTR	unknown.bas.bg
195.96.230.81	PTR	unknown.bas.bg
195.96.230.92	PTR	unknown.bas.bg
195.96.230.95	PTR	unknown.bas.bg
195.96.230.96	PTR	unknown.bas.bg
195.96.230.99	PTR	unknown.bas.bg
195.96.230.99	A	mail.imbm.bas.bg
195.96.230.99	A	imbm.bas.bg
195.96.230.115	PTR	unknown.bas.bg
195.96.230.116	PTR	unknown.bas.bg
195.96.230.118	PTR	unknown.bas.bg
195.96.230.121	PTR	unknown.bas.bg
195.96.230.128	PTR	imbm.bas.bg
195.96.230.184	A+PTR	imech.imbm.bas.bg
195.96.230.190	PTR	unknown.bas.bg
195.96.230.191	PTR	unknown.bas.bg
195.96.230.197	A+PTR	geospace4.imbm.bas.bg
195.96.230.200	PTR	unknown.bas.bg
195.96.230.200	A	mech.imbm.bas.bg
195.96.230.200	A	mech.bas.bg
195.96.230.205	PTR	unknown.bas.bg
195.96.230.208	PTR	unknown.bas.bg
195.96.230.213	A	arts.bas.bg
195.96.230.215	PTR	unknown.bas.bg
195.96.230.220	PTR	musicart.imbm.bas.bg
195.96.230.224	PTR	unknown.bas.bg
195.96.230.226	PTR	unknown.bas.bg
195.96.230.230	PTR	unknown.bas.bg
195.96.230.231	A+PTR	enc.enc.bas.bg
195.96.230.249	PTR	unknown.bas.bg
195.96.230.251	PTR	unknown.bas.bg
195.96.230.255	PTR	unknown.bas.bg