Robtex

Up: 81.31.232.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 81.31.234.0/24
Down right: 81.31.235.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.31.234.6	A	server2.dataservice.no
81.31.234.6	A	mail.rjukan.vgs.no
81.31.234.34	A+PTR	mail.kaylagroup.com
81.31.234.130	A	skittjakt.no
81.31.235.4	A	ns1.majmaomoorsenfi.com
81.31.235.5	A	newgenerationmilitia.com
81.31.235.5	A	ns2.majmaomoorsenfi.com
81.31.235.6	A	ns2.majmaomoorsenfi.com
81.31.235.6	A	majmaomoorsenfi.com
81.31.235.6	A	mail.majmaomoorsenfi.com
81.31.235.10	A	mail.sass.ir
81.31.235.10	A	exchange2013.sass.ir
81.31.235.66	A	mail.sikkersone.no
81.31.235.131	PTR	irgoldline.com
81.31.235.131	A+PTR	www.irgoldline.com
81.31.235.131	A	www.83851.ir
81.31.235.184	A	www.nazm.net
81.31.235.220	A+PTR	ns1.83851.ir
81.31.235.220	A	217-140-130-62.aina.net
81.31.235.221	A+PTR	ns2.83851.ir
81.31.235.221	A	hccparking.net
81.31.235.222	A+PTR	mail.83851.ir
81.31.235.229	A	ns2.joof.ir
81.31.235.229	A	artaexpo.com
81.31.235.229	A	mail.artaexpo.com