Robtex

Up: 81.175.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 81.175.20.0/23
Down right: 81.175.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.175.21.7	A	exchange.ptn.no
81.175.22.6	A+PTR	c0616af51.static.as2116.net
81.175.22.6	A	mta.itzi.no
81.175.22.16	PTR	smtp.gabler.no
81.175.22.28	A	sipinfo.no
81.175.22.28	A	mail.elsker.no
81.175.22.28	A	mail.sipinfo.no
81.175.22.34	A+PTR	c2216af51.static.as2116.net
81.175.23.27	A+PTR	flexo.dolphinics.no
81.175.23.30	A+PTR	scinn.dolphinics.no
81.175.23.35	A+PTR	naboto.dolphinics.no
81.175.23.36	A+PTR	poesci.dolphinics.no
81.175.23.39	A+PTR	nypostle.dolphinics.no
81.175.23.60	A+PTR	ftp.dolphinics.no
81.175.23.60	A	everythingismyfault.com
81.175.23.61	A+PTR	scispor.dolphinics.no
81.175.23.154	PTR	webmail.aspnorge.no
81.175.23.154	A	webmail.maplicense.com
81.175.23.170	A	mail.ensure.no
81.175.23.170	A	mail.aproco.no
81.175.23.195	PTR	post01.notteroy.kommune.no