Robtex

Up: 204.11.144.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 204.11.148.0/23
Down right: 204.11.150.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.11.148.10	PTR	srtp_ucxlab_chtwisc2.dsci-net.com
204.11.148.10	A	voice.dsci-net.com
204.11.148.10	A	ews1.dsci-net.com
204.11.148.17	A+PTR	ns1.dsci-net.com
204.11.148.17	A	time.dsci-net.com
204.11.148.17	A	ns001.myunifiedcloud.net
204.11.148.20	A+PTR	smtp1.dsci-net.com
204.11.148.26	PTR	26.ne.business.static.dsci-net.com
204.11.148.30	PTR	ftp.dsci-net.com
204.11.148.35	A+PTR	eng01.dsci-net.com
204.11.148.40	A+PTR	chtw.dsci-net.com
204.11.148.44	A	ums1.dsci-net.com
204.11.148.46	PTR	46.ne.business.static.dsci-net.com
204.11.148.46	A	voice.dsci-net.com
204.11.148.54	PTR	54.ne.business.static.dsci-net.com
204.11.148.69	PTR	69.ne.business.static.dsci-net.com
204.11.148.97	PTR	97.ne.business.static.dsci-net.com
204.11.148.128	PTR	128.ne.business.static.dsci-net.com
204.11.148.130	A+PTR	ftp.dsci-net.com
204.11.148.130	A	time.dsci-net.com
204.11.148.137	A+PTR	voice.dsci-net.com
204.11.148.140	PTR	tftp.dsci-net.com
204.11.148.140	A	time.dsci-net.com
204.11.148.142	PTR	142.ne.business.static.dsci-net.com
204.11.148.142	A	voice.dsci-net.com
204.11.148.143	PTR	143.ne.business.static.dsci-net.com
204.11.148.143	A	ums2.dsci-net.com
204.11.148.153	PTR	bslab-xsp.dsci-net.com
204.11.148.161	A+PTR	ns2.dsci-net.com
204.11.148.161	A	ns003.myunifiedcloud.net
204.11.148.164	A+PTR	smtp2.dsci-net.com
204.11.148.171	PTR	171.ne.business.static.dsci-net.com
204.11.148.190	A	mail.dscicorporation.com
204.11.148.238	PTR	238.ne.business.static.dsci-net.com
204.11.149.6	PTR	6.ne.business.static.dsci-net.com
204.11.149.6	A	medaptustest.com
204.11.149.26	PTR	26.ne.business.static.dsci-net.com
204.11.149.30	A	mail2.roybros.com
204.11.149.30	A	mail.roybros.com
204.11.149.54	PTR	54.ne.business.static.dsci-net.com
204.11.149.97	PTR	97.ne.business.static.dsci-net.com
204.11.149.128	PTR	128.ne.business.static.dsci-net.com
204.11.149.130	PTR	130.ne.business.static.dsci-net.com
204.11.149.148	A	mail.ecrm.com
204.11.149.149	A+PTR	mta.ecrm.com
204.11.149.158	A+PTR	hydra.ecrm.com
204.11.149.163	A	mail.rossmortgageco.com
204.11.149.171	PTR	171.ne.business.static.dsci-net.com
204.11.149.179	PTR	179.ne.business.static.dsci-net.com
204.11.149.179	A	stratusre.com
204.11.149.205	A	muratachannel.com
204.11.149.238	PTR	238.ne.business.static.dsci-net.com
204.11.150.2	PTR	2.ne.business.static.dsci-net.com
204.11.150.17	PTR	ns2.dsci-net.com
204.11.150.26	PTR	26.ne.business.static.dsci-net.com
204.11.150.54	PTR	54.ne.business.static.dsci-net.com
204.11.150.69	PTR	69.ne.business.static.dsci-net.com
204.11.150.97	PTR	97.ne.business.static.dsci-net.com
204.11.150.128	PTR	128.ne.business.static.dsci-net.com
204.11.150.130	PTR	130.ne.business.static.dsci-net.com
204.11.150.171	PTR	171.ne.business.static.dsci-net.com
204.11.150.238	PTR	238.ne.business.static.dsci-net.com
204.11.150.242	PTR	242.ne.business.static.dsci-net.com
204.11.151.2	PTR	2.ne.business.static.dsci-net.com
204.11.151.26	PTR	26.ne.business.static.dsci-net.com
204.11.151.35	A	mail.collinselectricco.com
204.11.151.54	PTR	54.ne.business.static.dsci-net.com
204.11.151.69	PTR	69.ne.business.static.dsci-net.com
204.11.151.69	A	*.altinozcicek.com
204.11.151.69	A	www.necco.com
204.11.151.70	A	mail.necco.com
204.11.151.97	PTR	97.ne.business.static.dsci-net.com
204.11.151.116	A	mail.srweiner.com
204.11.151.128	PTR	128.ne.business.static.dsci-net.com
204.11.151.130	PTR	130.ne.business.static.dsci-net.com
204.11.151.130	A	pharmetrics.org
204.11.151.130	A	pharmetrics.net
204.11.151.136	A	pharmetrics.com
204.11.151.171	PTR	171.ne.business.static.dsci-net.com
204.11.151.234	PTR	ase-app04.colo.lemi.com