Robtex

Up: 185.64.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.64.40.0/23
Down right: 185.64.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.64.40.13	A+PTR	clenove13.bubakov.net
185.64.40.21	A	clenove21.bubakov.net
185.64.40.25	A+PTR	clenove25.bubakov.net
185.64.40.32	PTR	clenove32.bubakov.net
185.64.40.36	A+PTR	clenove36.bubakov.net
185.64.40.48	A	clenove48.bubakov.net
185.64.40.54	A+PTR	clenove54.bubakov.net
185.64.40.65	A+PTR	ns.bubakov.net
185.64.40.66	A	mail.bubakov.net
185.64.40.66	A	nbs.bubakov.net
185.64.40.66	A	smtp.bubakov.net
185.64.40.68	A	bubakov.net
185.64.40.68	A	www.bubakov.net
185.64.40.93	A	klacek.bubakov.net
185.64.40.93	A	www.nsgogo.cz
185.64.40.93	A	tsns.cz
185.64.40.97	A	1einstein.net
185.64.40.97	A	einstein.1einstein.net
185.64.40.97	A	ns.1einstein.net
185.64.40.111	A	matyasprokop.com
185.64.40.111	A	smtp.matyasprokop.com
185.64.40.116	A	pecinov.cz
185.64.40.116	A	osns.cz
185.64.40.116	A	kdu-ns.cz
185.64.40.120	A	petracek.net
185.64.41.5	A	mail.xtech.cz
185.64.41.24	PTR	mail.pro-vlasy.cz
185.64.41.24	A	vlasy.trecom.cz
185.64.41.32	A	*.drostra.cz
185.64.41.32	A	drostra.cz
185.64.41.32	A	mail.drostra.cz
185.64.41.71	A	fakt.eu
185.64.41.71	A	compcity.cz
185.64.41.71	A	mail.krepelka.cz
185.64.41.74	A	zs.lany.indos.cz
185.64.41.81	A	kvetinyazahrada.cz
185.64.41.81	A	www.videoservis.com
185.64.41.121	A	mail.obec-lany.cz