Robtex

Up: 192.41.160.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 192.41.160.0/23
Down right: 192.41.162.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.41.161.43	A	listmanager1test.acs.org
192.41.161.49	A+PTR	admin-pubstestbooks.acs.org
192.41.161.89	A+PTR	bodstaging.acs.org
192.41.161.102	A	mailsrv.chemtest.org
192.41.161.103	A+PTR	mail.chemtest.org
192.41.161.107	A+PTR	extranetstaging.acs.org
192.41.161.137	PTR	gns1.acs.org
192.41.161.139	PTR	dns07.acs.org
192.41.161.141	A	paragon.acs.org
192.41.161.142	A	paragonplus.acs.org
192.41.161.143	A+PTR	legacy.acs.org
192.41.161.148	PTR	acsnanotube.org
192.41.161.148	PTR	nanoletter.org
192.41.161.148	A	recruitchemists.net
192.41.161.152	A+PTR	pubs3.acs.org
192.41.161.153	A+PTR	ftp.acs.org
192.41.161.153	A+PTR	ftp-prp.acs.org
192.41.161.154	PTR	portal.acs.org
192.41.161.156	A+PTR	community.acs.org
192.41.161.156	A+PTR	register.acs.org
192.41.161.156	A	nanotation.org
192.41.161.160	A+PTR	sdc.acs.org
192.41.161.162	A+PTR	acswebapplications.acs.org
192.41.161.162	A+PTR	center.acs.org
192.41.161.163	A	prfreview.acs.org
192.41.161.164	A+PTR	im-old.acs.org
192.41.161.168	A	mailapp.acs.org
192.41.161.169	A	mail2.acs.org
192.41.161.178	A	support.acs.org
192.41.161.182	A	demographics.acs.org
192.41.161.183	A	assets.acs.org
192.41.161.194	A+PTR	anywhereold.acs.org
192.41.161.194	A	mydesktop.acs.org
192.41.161.203	A	im.acs.org
192.41.161.213	A+PTR	adfs-old.acs.org
192.41.161.221	A+PTR	webmaildc.acs.org
192.41.161.221	A	webmail.gext.acs.org
192.41.161.231	A+PTR	dc2-pubs.acs.org
192.41.161.236	A	www.gext.acs.org
192.41.161.236	A	cmswwwdc.acs.org
192.41.161.236	A	www.acs.org
192.41.161.239	A	vioshoes.com
192.41.161.241	A	hq_vpn.acs.org
192.41.161.245	A	www.teachchemistry.org
192.41.162.1	A	gw.l.nstld.com
192.41.162.10	A	igw1.l.nstld.com
192.41.162.11	A	igw2.l.nstld.com
192.41.162.30	A+PTR	l.gtld-servers.net
192.41.162.30	A	l.edu-servers.net
192.41.162.30	A	l.gtld-servers.com
192.41.162.31	PTR	l2.nstld.com
192.41.162.31	A	l2.gov-servers.net
192.41.162.32	PTR	l3.nstld.com
192.41.162.32	A+PTR	epazote.arin.net
192.41.162.33	PTR	l4.nstld.com
192.41.162.33	A	srv2-sloggi.ma
192.41.162.33	A	srv2-valisere.ma
192.41.162.34	PTR	l5.nstld.com
192.41.162.35	PTR	l6.nstld.com
192.41.162.36	PTR	l.edu-servers.net
192.41.162.36	A	l7.nstld.com
192.41.162.37	A+PTR	l8.nstld.com
192.41.162.38	A+PTR	l9.nstld.com
192.41.162.39	PTR	l10.nstld.com