Robtex

Up: 46.29.228.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 46.29.229.0/25
Down right: 46.29.229.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
46.29.229.22	PTR	user22-2.luminet.cz
46.29.229.30	PTR	user30-2.luminet.cz
46.29.229.31	A	mail.nemlouny.cz
46.29.229.32	PTR	user32-2.luminet.cz
46.29.229.91	PTR	user91-2.luminet.cz
46.29.229.91	A	mail.ana-aqualine.cz
46.29.229.126	PTR	user126-2.luminet.cz
46.29.229.130	PTR	user130-2.luminet.cz
46.29.229.173	A	petrkucera.cz
46.29.229.173	A	compaq.citoliby.cz
46.29.229.173	A	mail.petrkucera.cz
46.29.229.250	A+PTR	user250-2.luminet.cz
46.29.229.250	A	mail.sostlouny.cz
46.29.229.252	A	sostlouny.cz
46.29.229.252	A	oasoslouny.cz
46.29.229.252	A	bida.oasoslouny.cz