Robtex

Up: 208.80.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 208.80.16.0/22
Down right: 208.80.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.80.16.2	A+PTR	cdr-ex.corduro.com
208.80.16.7	A	mail2.corduro.com
208.80.16.8	A+PTR	cdr-ex.corduro.com
208.80.16.8	A+PTR	wemail.corduro.com
208.80.16.10	PTR	dnspl.corduro.com
208.80.16.10	A	ns1.crydon.net
208.80.16.10	A	pfa-ns1.pfausa.com
208.80.16.16	A	tfs.corduro.com
208.80.16.17	A	ikira.com
208.80.16.17	A	*.ikira.com
208.80.16.20	A+PTR	cdr-share.corduro.com
208.80.16.30	A+PTR	ivr01.corduro.com
208.80.16.47	A	corduromerchantservices.com
208.80.16.100	A+PTR	sp.corduro.com
208.80.16.162	A	mylabdfw.com
208.80.16.200	A	mailpl.corduro.com
208.80.16.215	A	cordurotest.com
208.80.17.31	A	payment2.corduro.com
208.80.17.41	PTR	mobilizeyourarmy.com
208.80.17.41	PTR	cdrinfo.corduro.com
208.80.17.41	PTR	event.corduro.com
208.80.17.45	PTR	www.givemobile.com
208.80.17.45	PTR	givemobile.com
208.80.17.45	PTR	*.givemobile.com
208.80.17.55	A	contribute.corduro.com
208.80.17.83	A	markettest.corduro.com
208.80.17.131	A	paymyagent.com
208.80.17.131	A	paymyagent.net
208.80.17.132	A	paymyebay.net
208.80.17.132	A	paymyebay.com
208.80.17.154	PTR	mobilize.corduro.com
208.80.17.154	A+PTR	mya.corduro.com
208.80.17.154	A	mobilizeyourpassion.net
208.80.17.160	PTR	corduro.net
208.80.17.160	PTR	receipt.corduro.com
208.80.17.160	PTR	www.corduro.net
208.80.17.161	PTR	corduro.com
208.80.17.161	PTR	*.corduro.com
208.80.17.161	PTR	www.corduro.com
208.80.18.14	A+PTR	gtmpl.corduro.com
208.80.20.73	A	mylabmanagement.com
208.80.20.74	A	mylabwoodlands.com
208.80.20.75	A	mylabgenetics.com
208.80.20.76	A	msexserver.com
208.80.20.76	A	cordurohealth.com
208.80.21.51	A	smtp.msexserver.com
208.80.21.52	A+PTR	ex.cordurohealth.com
208.80.21.52	A	mail.pledgenow.com
208.80.21.52	A	mail.mediplexhealth.com
208.80.21.80	A	lab-ex.mylabdfw.com
208.80.21.202	A+PTR	cdr-dns.corduro.com
208.80.22.14	A+PTR	gtmfw.corduro.com
208.80.22.55	A+PTR	lowt.corduro.com
208.80.22.71	A	mediplexalliances.com
208.80.22.74	A	mylabdfw.com
208.80.22.76	A	cordurohealth.com
208.80.22.78	A	intellalabs.com
208.80.23.51	A	smtp.msexserver.com
208.80.23.52	A	mail.pledgenow.com
208.80.23.52	A	mail.cordurohealth.com
208.80.23.80	A	lab-ex.mylabdfw.com
208.80.23.80	A	smtp.mylabdfw.com
208.80.23.91	A	lab-ex.integratedlabsolution.com