Robtex

Up: 216.235.192.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.235.192.0/25
Down right: 216.235.192.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.235.192.16	A	webshield-out.blackbaud.com
216.235.192.17	A	mail1.blackbaud.com
216.235.192.18	A	mail2.blackbaud.com
216.235.192.19	A	mail3.blackbaud.com
216.235.192.22	A	imap.blackbaud.com
216.235.192.23	A+PTR	mail4.blackbaud.com
216.235.192.24	A+PTR	ncservicetest.blackbaud.com
216.235.192.25	A	fepftp.blackbaud.com
216.235.192.31	A	citrix.blackbaud.com
216.235.192.59	A+PTR	provisioning.blackbaud.com
216.235.192.69	A	vdi.blackbaud.com
216.235.192.70	A+PTR	forums.blackbaud.com
216.235.192.77	A	av.blackbaud.com
216.235.192.85	A	dialin.blackbaud.com
216.235.192.87	A	lynclonextweb.blackbaud.com
216.235.192.96	A	blackbaud.com.mx
216.235.192.96	A	blackbaud.mx
216.235.192.97	A	blackbaud.nl
216.235.192.100	PTR	www.blackbaud.com
216.235.192.100	A	targetsite.com
216.235.192.100	A	interactive.blackbaud.com
216.235.192.101	A+PTR	w3appz.blackbaud.com
216.235.192.101	A	etapestry.com.au
216.235.192.101	A	fundraisinginasia.org
216.235.192.102	A	info.blackbaud.com
216.235.192.103	A	bbtraining.blackbaud.com
216.235.192.104	A	rmsw2k3.blackbaud.com
216.235.192.107	A+PTR	owa.blackbaud.com
216.235.192.114	PTR	ftp1.blackbaud.com
216.235.192.114	A	ftp.blackbaud.com
216.235.192.116	A	ncweb1chs.blackbaud.com
216.235.192.121	A	labs.blackbaud.com
216.235.192.124	A	subscriptions.blackbaud.com
216.235.192.127	A	bbnc3.blackbaud.com
216.235.192.132	A	scanstoretest.blackbaud.com
216.235.192.135	A	sde-bbcrm.blackbaud.com
216.235.192.136	A+PTR	proscenium.blackbaud.com
216.235.192.141	A	ncoaftp.blackbaud.com
216.235.192.143	A	desftp.blackbaud.com
216.235.192.152	A	designsandbox1.blackbaud.com
216.235.192.153	A	designsandbox2.blackbaud.com
216.235.192.154	A	designsandboxowa.blackbaud.com
216.235.192.160	A+PTR	development.blackbaud.com
216.235.192.161	A	techpreview.blackbaud.com
216.235.192.170	A+PTR	newsite.blackbaud.com
216.235.192.171	A	forumsmail.blackbaud.com
216.235.192.181	A+PTR	test1.netcommunity4.com
216.235.192.182	A+PTR	test2.netcommunity4.com
216.235.192.184	A	aqkzaymbani.blackbaud.com
216.235.192.186	A+PTR	keys2.blackbaud.com
216.235.192.190	A	test.blackbaud.com
216.235.192.191	A	bbhostcsg.blackbaud.com
216.235.192.192	A+PTR	nokiaman.blackbaud.com
216.235.192.197	A	netsolmailman.blackbaud.com
216.235.192.199	A	nccsg.blackbaud.com
216.235.192.200	A	sde-bbec.blackbaud.com
216.235.192.205	A	renetmailchs.blackbaud.com
216.235.192.209	A	bbncsandboxtoo.blackbaud.com
216.235.192.211	A	ncmail3test.blackbaudhost.com
216.235.192.223	A	www.blackbaud.ca
216.235.192.233	A	sde-bbnc.blackbaud.com
216.235.192.234	A	sde-bbdm.blackbaud.com
216.235.192.237	A	sde-exch1vm.blackbaud.com
216.235.192.241	A	sde-sharepoint.blackbaud.com
216.235.192.250	A	bbhostweb.blackbaud.com
216.235.192.251	A	bhmailtest.blackbaud.com
216.235.192.253	A	ncwebloadtest.blackbaud.com
216.235.192.254	A	ncmailloadtest.blackbaud.com