Robtex

Up: 178.213.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 178.213.40.0/22
Down right: 178.213.44.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
178.213.40.58	PTR	mail.netdeluxe.cz
178.213.40.58	A	gp-saws.com
178.213.40.58	A	mail.mozny.net
178.213.41.10	A	mail.gonda.cz
178.213.41.110	PTR	netdeluxe.cz
178.213.41.130	A	mail.zskomslavkov.cz
178.213.41.130	A	zskomslavkov.cz
178.213.41.195	PTR	netdeluxe.cz
178.213.41.195	A	smtp.it-magnet.com
178.213.41.195	A	ntp.it-magnet.com
178.213.41.226	PTR	226.41.customer.smartnet.cz
178.213.41.226	A	dorotka.org
178.213.41.242	A	mail.holovska.eu
178.213.41.242	A	holovska.eu
178.213.44.3	PTR	3.44.customer.smartnet.cz
178.213.45.34	A	pucek.info