Robtex

Up: 199.232.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 199.232.40.0/23
Down right: 199.232.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.232.40.157	PTR	soho-c40-157.cent.net
199.232.41.1	A	groute.gnu.org
199.232.41.14	A	servent.gnu.org
199.232.41.17	PTR	ip-199-232-41-17.cent.net
199.232.41.50	PTR	ip-199-232-41-50.cent.net
199.232.41.56	PTR	ip-199-232-41-56.cent.net
199.232.41.58	PTR	ip-199-232-41-58.cent.net
199.232.41.70	A	tmp.gnu.org
199.232.41.79	A	jabber-old.fsf.org
199.232.41.104	PTR	ip-199-232-41-104.cent.net
199.232.41.112	PTR	ip-199-232-41-112.cent.net
199.232.41.115	PTR	ip-199-232-41-115.cent.net
199.232.41.116	PTR	ip-199-232-41-116.cent.net
199.232.41.121	PTR	ip-199-232-41-121.cent.net
199.232.41.122	PTR	ip-199-232-41-122.cent.net
199.232.41.125	PTR	ip-199-232-41-125.cent.net
199.232.41.127	PTR	ip-199-232-41-127.cent.net
199.232.41.129	PTR	ip-199-232-41-129.cent.net
199.232.41.148	PTR	ip-199-232-41-148.cent.net
199.232.41.163	A	mx1.joopz.com
199.232.41.166	PTR	mail.mobile-sphere.com
199.232.41.166	A	mail.pagomobile.com
199.232.41.166	A	mail.teleplexgroup.com
199.232.41.175	A	www.editdesign.com
199.232.41.212	A+PTR	linus.mobile-sphere.com
199.232.41.212	A	*.cellularld.com
199.232.41.212	A	*.cellularld.net
199.232.41.219	A	mail.joopz.com
199.232.41.219	A	mail.myeego.info
199.232.41.219	A	hermes.joopz.com
199.232.41.220	A	ms.mobile-sphere.com
199.232.41.220	A	mobile-sphere.com
199.232.41.220	A	pagomobile.com
199.232.41.225	PTR	ip-199-232-41-225.cent.net
199.232.41.230	A	ip-199-232-41-230.cent.net
199.232.41.231	PTR	ip-199-232-41-231.cent.net
199.232.41.251	PTR	ip-199-232-41-251.cent.net
199.232.42.91	A	cph-v4.pops.fastly-insights.com
199.232.42.202	PTR	link42-202.cent.net
199.232.42.217	A	tv2.dk
199.232.43.3	PTR	www.yoga.com
199.232.43.3	A	hostmaster.yogabodhi.net
199.232.43.3	A	yogabodhi.net
199.232.43.101	PTR	ip-199-232-43-101.cent.net
199.232.43.121	PTR	ip-199-232-43-121.cent.net
199.232.43.136	PTR	ip-199-232-43-136.cent.net
199.232.43.136	A	intermute.com.spysubtract.com
199.232.43.136	A	com.spysubtract.com
199.232.43.150	PTR	ip-199-232-43-150.cent.net
199.232.43.151	PTR	ip-199-232-43-151.cent.net
199.232.43.156	PTR	ip-199-232-43-156.cent.net
199.232.43.157	PTR	ip-199-232-43-157.cent.net
199.232.43.165	PTR	ip-199-232-43-165.cent.net
199.232.43.181	A+PTR	stack.igconcepts.com
199.232.43.185	PTR	ip-199-232-43-185.cent.net
199.232.43.211	PTR	ip-199-232-43-211.cent.net