Robtex

Up: 81.89.236.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 81.89.236.0/25
Down right: 81.89.236.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.89.236.2	A+PTR	mail.horstmann-coll.de
81.89.236.3	PTR	static-81-89-236-3.teleos-web.de
81.89.236.3	A	mail.wiegmann-online.de
81.89.236.3	A	mail.wiegmann-dmp.de
81.89.236.14	A+PTR	mail.hcs-profile.de
81.89.236.14	A	mail.hcs-holzverarbeitung.de
81.89.236.19	PTR	mail.heumann-stbg.de
81.89.236.19	A	mail.artag-bielefeld.de
81.89.236.19	A	mail.artag-salzuflen.de
81.89.236.30	PTR	static-81-89-236-30.teleos-web.de
81.89.236.30	A	backup.aquamax.net
81.89.236.34	PTR	static-81-89-236-34.teleos-web.de
81.89.236.34	A	mail.mattern.it
81.89.236.41	PTR	static-81-89-236-41.teleos-web.de
81.89.236.42	PTR	mail.eggersmann.de
81.89.236.45	A	hahneshop.com
81.89.236.49	A+PTR	mail.apotheken-shg.de
81.89.236.54	A	mail.menke-kuechen.de
81.89.236.57	PTR	www.emendo.de
81.89.236.154	A	remote.hoth-kappel.de
81.89.236.237	PTR	mail.midland-it.de
81.89.236.237	A	david.baumgarten-bsa.de
81.89.236.241	A	remote.wolterbau.de