Robtex

Up: 37.0.80.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 37.0.81.0/25
Down right: 37.0.81.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
37.0.81.2	PTR	rt81bb0-37-2.routit.net
37.0.81.2	A	mail.ettu.nl
37.0.81.3	PTR	rt81bb0-37-3.routit.net
37.0.81.3	A	cloudsocialintranet.com
37.0.81.3	A	mail.e-connect.nl
37.0.81.4	PTR	rt81bb0-37-4.routit.net
37.0.81.4	A	intranet.blue
37.0.81.4	A	www.ettu.nl
37.0.81.5	PTR	rt81bb0-37-5.routit.net
37.0.81.7	PTR	rt81bb0-37-7.routit.net
37.0.81.7	A	debbel.com
37.0.81.7	A	debble.com
37.0.81.17	A	vpn.lcpackaging.nl
37.0.81.33	PTR	wsus.euro-index.nl
37.0.81.34	PTR	wsus.euro-index.nl
37.0.81.34	A	mail.euro-index.nl
37.0.81.42	PTR	rt81bb0-37-42.routit.net
37.0.81.42	A	remote.vandegroep.nl
37.0.81.52	A	mail.future-diagnostics.nl
37.0.81.54	A	mail.future-diagnostics.nl
37.0.81.58	A	local.trancon.nl
37.0.81.61	PTR	rt81bb0-37-61.routit.net
37.0.81.61	A	mail.gigabikes.nl
37.0.81.61	A	mail.internet-bikes.com
37.0.81.71	A	mail.abo-klimaat.nl
37.0.81.71	A	remote.abo-klimaat.nl
37.0.81.75	A	mail.lodderapplicaties.nl
37.0.81.84	PTR	rt81bb0-37-84.routit.net
37.0.81.84	A	mail.vanka-kawat.nl
37.0.81.88	A	mail.bomgroep.nl
37.0.81.90	A	mail.recordcompounds.com
37.0.81.90	A	mail.plastchem.nl
37.0.81.97	A	mail.marginpar.nl
37.0.81.114	A	mail.valkmetaal.nl
37.0.81.120	PTR	rt81bb0-37-120.routit.net
37.0.81.120	A	hq.safescan.com
37.0.81.122	PTR	rt81bb0-37-122.routit.net
37.0.81.122	A	bmtdebeer.com
37.0.81.122	A	webmail.bmtdebeer.com
37.0.81.125	A	mail.ritzenhoff.nl
37.0.81.125	A	mail.maxwellandwilliams.nl
37.0.81.126	PTR	rt81bb0-37-126.routit.net
37.0.81.131	PTR	webmail.bkv.nl
37.0.81.131	A	mail.bkv.nl
37.0.81.164	A	mail.koekjes.nl
37.0.81.166	PTR	rt81bb0-37-166.routit.net
37.0.81.166	A	www.van-strien.nl
37.0.81.166	A	koekjes.nl
37.0.81.169	PTR	rt81bb0-37-169.routit.net
37.0.81.170	PTR	rt81bb0-37-170.routit.net
37.0.81.173	PTR	rt81bb0-37-173.routit.net
37.0.81.174	A	mail.geonovum.nl
37.0.81.193	A+PTR	office.solidq.nl
37.0.81.201	PTR	rt81bb0-37-201.routit.net
37.0.81.235	PTR	rt81bb0-37-235.routit.net
37.0.81.255	PTR	rt81bb0-37-255.routit.net