Robtex

Up: 89.146.18.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 89.146.18.0/25
Down right: 89.146.18.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
89.146.18.0	PTR	rt18bb146-89-0.routit.net
89.146.18.7	PTR	srv01.infracom.nl
89.146.18.7	A	ns7.infracom.nl
89.146.18.14	A	webserver13.infracom.nl
89.146.18.14	A	securitycontrolsoftware.nl
89.146.18.17	A	hardwarerepair.nl
89.146.18.18	PTR	webserver12.infracom.nl
89.146.18.19	PTR	webserver11.infracom.nl
89.146.18.19	A	service-equipe.com
89.146.18.19	A	www.engelenbergschool.nl
89.146.18.20	A+PTR	webserver10.infracom.nl
89.146.18.22	A+PTR	mail32.infracom.nl
89.146.18.24	A+PTR	mail22.infracom.nl
89.146.18.24	A	mail1.jansen-venneboer.com
89.146.18.24	A	mail1.jansen-venneboer.nl
89.146.18.25	A+PTR	mail21.infracom.nl
89.146.18.25	A	mail2.jansen-venneboer.com
89.146.18.25	A	mail2.jansen-venneboer.nl
89.146.18.31	PTR	rt18bb146-89-31.routit.net
89.146.18.31	A	webserver12.infracom.nl
89.146.18.83	A	exchange.expedient.nl
89.146.18.84	A	ns.expedient.nl
89.146.18.84	A	*.expedient.nl
89.146.18.84	A	com.expedient.nl
89.146.18.200	A	beta.startmail.com
89.146.18.215	PTR	rt18bb146-89-215.routit.net
89.146.18.218	PTR	rt18bb146-89-218.routit.net
89.146.18.247	PTR	rt18bb146-89-247.routit.net
89.146.18.247	A	eu4.startpage.com
89.146.18.251	PTR	rt18bb146-89-251.routit.net
89.146.18.251	A	eu4.ixquick.com
89.146.18.255	PTR	rt18bb146-89-255.routit.net