Robtex

Up: 178.21.172.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 178.21.172.0/25
Down right: 178.21.172.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
178.21.172.3	A+PTR	s1.hostbuzz.gr
178.21.172.40	A	mail.surfaces.gr
178.21.172.40	A	mail.kolidakis.eu
178.21.172.40	A	kolidakis.eu
178.21.172.41	A	ns2.listonline.gr
178.21.172.41	A	ns2.2531.gr
178.21.172.66	A+PTR	vps.nextsoftware.gr
178.21.172.67	PTR	nextservice.gr
178.21.172.71	A	s172071.vps.name-servers.gr
178.21.172.80	A	mail.zikkiu.gr
178.21.172.88	A	ns2.faceweb.gr
178.21.172.95	PTR	motorparts.com.gr
178.21.172.95	A	ns1.s239467.vps.name-servers.gr
178.21.172.96	A+PTR	s172096.vps.name-servers.gr
178.21.172.101	A+PTR	s241355.name-servers.gr
178.21.172.105	A+PTR	s241765.name-servers.gr
178.21.172.113	A+PTR	server.task.gr
178.21.172.113	A	mail.patsikas.gr
178.21.172.113	A	furs.task.gr
178.21.172.114	PTR	server.task.gr
178.21.172.119	A+PTR	mail2.cloudforce.gr
178.21.172.119	A	mail2.gonismelon.com
178.21.172.119	A	mail2.jzstrategic.com
178.21.172.128	A	ns1.s172128.vps.name-servers.gr
178.21.172.163	PTR	vps.eae.gr
178.21.172.189	PTR	s172189.vps.name-servers.gr
178.21.172.189	A	mail.acp-advertising.gr