Robtex

Up: 213.240.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 213.240.136.0/23
Down right: 213.240.138.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.240.136.242	A	sekundemal.de
213.240.136.242	A	1-eintrag.de
213.240.136.242	A	mail.irokee.de
213.240.136.244	A	kleidungsgroessen.com
213.240.136.244	A	bengalen-of-junglewood.de
213.240.136.244	A	smartphoneversicherungvergleich.at
213.240.137.5	A+PTR	rpi.heep.sax.de
213.240.137.5	A	mail.earth-tu-radios.de
213.240.137.5	A	earth-tu-radios.de
213.240.137.9	A+PTR	uriah.heep.sax.de
213.240.137.9	A	mail.openavr.com
213.240.137.9	A	mail.openavr.org
213.240.137.250	A	mx1.klebstoffe.com
213.240.137.250	A	mail.klebstoffe.com
213.240.138.2	PTR	mx1.riedel.net
213.240.138.2	A	mx2.riedel.net