Robtex

Up: 5.158.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 5.158.192.0/22
Down right: 5.158.196.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.158.192.3	PTR	ext01.lhost.no
5.158.192.7	PTR	ext02.lhost.no
5.158.192.11	PTR	ext03.lhost.no
5.158.192.68	A+PTR	mx01.lhost.no
5.158.192.69	A+PTR	mx02.lhost.no
5.158.192.69	A+PTR	spamfilter02.lhost.no
5.158.192.70	A+PTR	spamfilter03.lhost.no
5.158.192.71	PTR	mxhost1.lhost.no
5.158.192.72	PTR	cloud.lhost.no
5.158.192.73	PTR	teamspeak.lhost.no
5.158.192.74	A+PTR	antivirus.lhost.no
5.158.192.75	A+PTR	prtgmonitor.lhost.no
5.158.192.81	A+PTR	ns1-auth.lhost.no
5.158.192.82	A+PTR	ns2-auth.lhost.no
5.158.192.91	A+PTR	ns1.lhost.no
5.158.192.92	A+PTR	ns2.lhost.no
5.158.192.162	A	www.isovent.no
5.158.192.162	A	abildsnes.no
5.158.192.162	A	nordwest3d.com
5.158.193.14	A	mail.atlanticseafish.no
5.158.193.37	A	mail.nordplan.no
5.158.193.42	A	mail.selstad.no
5.158.193.51	A	mail.nordrikk.no
5.158.193.74	PTR	5-158-193-74.static.lhost.no
5.158.193.74	A	www.eidaportalen.no
5.158.193.74	A	veir.media
5.158.193.97	A	ns.itbase.com
5.158.193.98	A	digiprom.net
5.158.193.103	A	mail.digiprom.no
5.158.193.106	A	ns.itbase.com
5.158.193.106	A	tk-prosjekter.com
5.158.193.106	A	sib-bolig.com
5.158.193.113	A	smtp1.jebsens.no
5.158.193.120	A	exchange.coast.no
5.158.193.120	A	ex.coast.no
5.158.193.133	A	mail.coast.no
5.158.193.134	PTR	5-158-193-134.static.lhost.no
5.158.193.134	A	mail.coast.no
5.158.193.166	A+PTR	ns3.initio.no
5.158.193.166	A	ns2.graficonn.no
5.158.193.240	A	www.videonor.se
5.158.193.240	A	vave.no
5.158.193.240	A	vnor.se
5.158.194.22	A	uat.oscc.no
5.158.194.23	A	mail.firdasea.no