Robtex

Up: 194.225.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 194.225.244.0/23
Down right: 194.225.246.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
194.225.244.24	A	mx1.narexnet.com
194.225.244.139	PTR	mail.nargan.com
194.225.244.141	PTR	gw.nargan.com
194.225.244.154	A+PTR	mail.yashar.ir
194.225.245.42	PTR	mail.bankmellat.ir
194.225.247.1	PTR	cs.iritco.net
194.225.247.73	PTR	cs.iritco.net
194.225.247.107	PTR	mail.cobeldarou.com
194.225.247.108	PTR	mail.cobeldarou.com
194.225.247.110	A	hostmaster.cobeldarou.biz
194.225.247.110	A	www.cobeldarou.net
194.225.247.110	A	hostmaster.cobeldarou.net
194.225.247.135	PTR	mail.wrm.ir