Robtex

Up: 204.15.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 204.15.88.0/22
Down right: 204.15.92.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.15.88.14	A	ns1.insideidc.com
204.15.88.15	A+PTR	ns2.insideidc.com
204.15.88.16	A	us-ipass1.insideidc.com
204.15.88.17	A	us-ipass2.insideidc.com
204.15.88.30	A	idcframhub.insideidc.com
204.15.88.33	A	idc_neps.insideidc.com
204.15.88.37	A	idced01.insideidc.com
204.15.88.40	A	crmwebapps.insideidc.com
204.15.88.51	A	apps.insideidc.com
204.15.88.56	A	cmsdev.insideidc.com
204.15.88.57	A	helpdesk.insideidc.com
204.15.88.58	A	idcdelivery.idc.com
204.15.88.61	A+PTR	pst1.insideidc.com
204.15.88.96	A	solarwinds.insideidc.com
204.15.88.97	A	apps-qa.insideidc.com
204.15.88.99	A	usis-plproxy.insideidc.com
204.15.88.99	A	usmi-plproxy.insideidc.com
204.15.88.135	A	idcsmtp5.insideidc.com
204.15.88.135	A	relay.insideidc.com
204.15.88.143	A	www.insideidc.com
204.15.88.150	A	www.pcprice.idc.com
204.15.88.150	A	www.pcpricing.idc.com
204.15.88.150	A	pcpricing.idc.com
204.15.88.152	A	pricingevaluator.idc.com
204.15.88.152	A	pricing.idc.com
204.15.88.152	A	www.pricingevaluator.idc.com
204.15.88.155	A	ftp.idc.com
204.15.88.240	A+PTR	eventia.insideidc.com
204.15.88.245	A	usfr-mgtctr.insideidc.com
204.15.88.254	A	us-vpn.insideidc.com
204.15.88.254	A	usfr-fw.insideidc.com
204.15.95.1	A	pmail.idc.com
204.15.95.80	PTR	sag-app2.prod.idc.com
204.15.95.130	A	idctracker.com
204.15.95.130	A	www.idctracker.com
204.15.95.132	A	reports.idctracker.com
204.15.95.230	PTR	idc.com
204.15.95.230	PTR	www.idc.com
204.15.95.230	A	www.idc-fi.com
204.15.95.232	A+PTR	qacas.idc.com
204.15.95.235	A	rest.idc.com
204.15.95.237	A+PTR	cas.idc.com
204.15.95.239	A	pes.idc.com
204.15.95.240	A	idcresearch.de
204.15.95.240	A	idccentralasia.com
204.15.95.240	A	fintech-asia.com
204.15.95.241	A+PTR	blogs.idc.com
204.15.95.242	PTR	dls.idc.com
204.15.95.245	PTR	qa.idc.com
204.15.95.248	A	www.idc.ca
204.15.95.248	A	idcspain.com
204.15.95.248	A	idc.ca