Robtex

Up: 80.80.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 80.80.16.0/21
Down right: 80.80.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.80.16.36	A	reddere.eu
80.80.16.39	A+PTR	mail.112.dk
80.80.16.39	A+PTR	mail.112net.dk
80.80.16.39	A	www.112net.dk
80.80.16.190	A	mail.dodge.se
80.80.16.190	A	mail.dodge.dk
80.80.16.190	A	smtp.jeep.se
80.80.16.250	A	mail.fk.dk
80.80.16.253	A	mail.licvem.dk
80.80.16.253	A	mail.licvem.com
80.80.17.130	PTR	dkcphmx10.softcom.dk
80.80.17.171	A	mail.moen-atlas.dk
80.80.17.171	A	mail.moenatlas.dk
80.80.18.34	A	acn047oslmsx02.enterprisenet.org
80.80.18.155	A	www.acronym.dk
80.80.18.155	A	acronym.dk
80.80.18.195	PTR	mx00.catglobe.com
80.80.19.61	A	mail.fdjv.com
80.80.19.128	A	swisslack.ch
80.80.19.130	A	hide.ascio.com
80.80.19.140	A	muchide.ascio.com
80.80.19.141	A	mmxhide.ascio.com
80.80.19.145	A	speeddns.net
80.80.19.154	A	ns1.namecenter.ch
80.80.19.154	A	srv1-moretta.ma
80.80.19.154	A	srv1-daba.ma
80.80.19.160	A	studeco.com
80.80.19.164	A	weblogs.ascio.com
80.80.19.166	A	v-mail.se
80.80.19.166	A	xn--vnstern-5wa.se
80.80.19.183	A	manatee.ascio.com
80.80.19.192	A	namesuggestion.ascio.com
80.80.19.199	A	xn--labodarna-42a.se
80.80.19.199	A	xn--sjfartshgskolan-9sbg.se
80.80.19.199	A	xn--sjbokommun-fcb.se
80.80.19.230	A	shide.ascio.com
80.80.20.46	A	xal.info
80.80.20.46	A	domestos.no
80.80.20.46	A	compeed.ro
80.80.20.47	A	digitalidentity.info
80.80.20.53	A	cph1fw3.ascio.com
80.80.20.165	PTR	smtp.rmig.com
80.80.22.194	A+PTR	mail4.simcorp.com
80.80.22.195	A+PTR	mail6.simcorp.com
80.80.22.203	A	accessweb.simcorp.com
80.80.24.70	A	www.detsocialeraad.dk
80.80.24.70	A	www.socialeraad.dk
80.80.24.134	PTR	mail.sp3.dk
80.80.24.203	A	lode.dk
80.80.24.210	PTR	mailserver1.asoft.dk
80.80.25.171	PTR	mail.scalepoint.com
80.80.26.134	A	gw.bankinvest.dk
80.80.26.150	A	ivs.dk