Robtex

Up: 80.172.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 80.172.0.0/18
Down right: 80.172.64.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.172.0.1	A	adsl-sul01-1-1.vianw.pt
80.172.0.2	A	adsl-sul01-1-2.vianw.pt
80.172.0.46	A	adsl-sul01-1-46.vianw.pt
80.172.0.75	A	adsl-sul01-1-75.vianw.pt
80.172.0.237	A	adsl-sul01-1-237.vianw.pt
80.172.1.2	A+PTR	adsl-sul01-2-2.vianw.pt
80.172.1.3	A+PTR	adsl-sul01-2-3.vianw.pt
80.172.1.24	A	adsl-sul01-2-24.vianw.pt
80.172.1.33	A	adsl-sul01-2-33.vianw.pt
80.172.1.166	A	adsl-sul01-2-166.vianw.pt
80.172.24.185	A	adsl-sul01-248.business.vianw.pt
80.172.24.243	A	mail.cinfa.pt
80.172.25.41	A	traducta.com.es
80.172.25.71	A	mx1.colours.pt
80.172.25.76	A	mx3.colours.pt
80.172.25.148	A	mailserver.nova-etapa.pt
80.172.26.22	A	mail.deftiom.com
80.172.26.22	A	*.deftpt.com
80.172.26.22	A	www.deftpt.com
80.172.26.168	A	webmail2.smasalmada.pt
80.172.26.190	A	sede.smah.pt
80.172.27.44	A	incawmsrv.incasis.com
80.172.27.44	A	mail.inca.pt
80.172.27.66	A	mail2.magisom.pt
80.172.27.243	A	mail.fsa-advogados.pt
80.172.30.33	PTR	mail.cm-azambuja.pt
80.172.30.34	A	biblio.cm-azambuja.pt
80.172.32.1	A+PTR	adsl-sul02-1-1.vianw.pt
80.172.32.2	A+PTR	adsl-sul02-1-2.vianw.pt
80.172.32.3	A	adsl-sul02-1-3.vianw.pt
80.172.32.4	A	adsl-sul02-1-4.vianw.pt
80.172.32.128	A+PTR	adsl-sul02-1-128.vianw.pt
80.172.32.129	A	adsl-sul02-1-129.vianw.pt
80.172.32.130	A	adsl-sul02-1-130.vianw.pt
80.172.32.131	A	adsl-sul02-1-131.vianw.pt
80.172.48.5	A	mail.fdassociados.pt
80.172.48.5	A	remote.fdassociados.pt
80.172.48.182	A	smtp.jardim-vista.com
80.172.48.182	A	mail.jardim-vista.com
80.172.48.225	A	dns3.semcabo.com
80.172.48.225	A	dns1.semcabo.net
80.172.51.78	A	mail.areiasdoseixo.pt
80.172.51.78	A	mail.areiasdoseixo.com
80.172.51.129	PTR	claranet.pt
80.172.56.10	A	a3.cnet.pt
80.172.56.32	A	mail.gesseven.pt
80.172.56.62	A	mail.gesseven.pt
80.172.56.123	A	gesseven.dyndns.org
80.172.56.215	A	a3pt.ddns.net
80.172.56.244	A	gesseven.dyndns.org