Robtex

Up: 217.75.218.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 217.75.218.0/25
Down right: 217.75.218.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.75.218.4	A+PTR	u217-75-218-4.static.grapesc.cz
217.75.218.10	A+PTR	u217-75-218-10.static.grapesc.cz
217.75.218.12	PTR	u217-75-218-12.static.grapesc.cz
217.75.218.25	PTR	u217-75-218-25.static.grapesc.cz
217.75.218.29	A+PTR	u217-75-218-29.static.grapesc.cz
217.75.218.35	A+PTR	u217-75-218-35.static.grapesc.cz
217.75.218.43	A+PTR	u217-75-218-43.static.grapesc.cz
217.75.218.78	A	mail2.intermont-opatrny.cz
217.75.218.98	A	msservis.eu
217.75.218.98	A	dxms.cz
217.75.218.99	PTR	u217-75-218-99.static.grapesc.cz
217.75.218.99	A	post.ladysfitstudio.cz
217.75.218.99	A	post.dxms.eu
217.75.218.100	PTR	u217-75-218-100.static.grapesc.cz
217.75.218.100	A	dxms.cz
217.75.218.100	A	czecheconomy.cz
217.75.218.101	A	msg2.colossus.clubware.live
217.75.218.101	A	mail.anywork.cz
217.75.218.101	A	ms2.pupo.anywork.cz
217.75.218.102	PTR	u217-75-218-102.static.grapesc.cz
217.75.218.102	A	mail.clubware.online
217.75.218.102	A	hajkovi.info
217.75.218.106	PTR	u217-75-218-106.static.grapesc.cz
217.75.218.132	A	sottovi.eu
217.75.218.132	A	alpha-group.cz
217.75.218.140	PTR	u217-75-218-140.static.grapesc.cz
217.75.218.140	A	mail.xbalu.cz
217.75.218.152	PTR	u217-75-218-152.static.grapesc.cz
217.75.218.152	A	mail.roltech.cz
217.75.218.153	A	mail.stanislavmares.cz
217.75.218.184	A+PTR	u217-75-218-184.static.grapesc.cz
217.75.218.194	A+PTR	u217-75-218-194.static.grapesc.cz
217.75.218.235	A+PTR	u217-75-218-235.static.grapesc.cz
217.75.218.238	A+PTR	u217-75-218-238.static.grapesc.cz
217.75.218.242	A	u217-75-218-242.static.grapesc.cz