Robtex

Up: 66.101.58.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 66.101.58.0/25
Down right: 66.101.58.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.101.58.2	A+PTR	ns101.sprocketdata.com
66.101.58.2	A	ns101.sprocketnetworks.com
66.101.58.2	A	ns2.fireflycom.net
66.101.58.3	A+PTR	dnscache.sprocketdata.com
66.101.58.4	A	cache101.sprocketdata.com
66.101.58.5	A+PTR	cache102.sprocketdata.com
66.101.58.6	A	isengard.sprocketdata.com
66.101.58.7	A+PTR	db101.sprocketdata.com
66.101.58.8	A	moria.sprocketdata.com
66.101.58.9	A+PTR	ns100.sprocketdata.com
66.101.58.10	A+PTR	anduin.sprocketdata.com
66.101.58.12	A	mail.sprocketnetworks.com
66.101.58.22	PTR	asparagus.t3l.net
66.101.58.27	A	egwene.sprocketnetworks.com
66.101.58.30	A	dev.sprocketdata.com
66.101.58.41	A	core0-lo0.sprocketdata.com
66.101.58.46	A+PTR	starbase.feep.net
66.101.58.46	A	encap.org
66.101.58.46	A	feep.net
66.101.58.54	A	itvestors.com
66.101.58.58	PTR	family.fierbaugh.org
66.101.58.58	A	fierbaugh.org
66.101.58.70	A+PTR	vagprod.veritasag.com
66.101.58.78	PTR	reverse-66-101-58-78.sprocketdata.com
66.101.58.78	A	croma.mx
66.101.58.78	A	ns2.mundojava.com
66.101.58.94	PTR	reverse-66-101-58-94.sprocketdata.com
66.101.58.94	A	christianecology.org
66.101.58.94	A	brainop.net
66.101.58.98	A	buildocracy.com
66.101.58.114	A	amathist-inc.com
66.101.58.114	A	mail.amathist-inc.com
66.101.58.130	A	dalmail02.tech-advisors.com
66.101.58.131	A	bg-tx.com
66.101.58.131	A	www.marcandkelli.com
66.101.58.131	A	caddorivercabins.com
66.101.58.132	PTR	ns1.tech-advisors.com
66.101.58.133	PTR	mail1.tech-advisors.com
66.101.58.133	A	dalmail01.xodv.com
66.101.58.133	A	mail.caddorivercottage.com
66.101.58.142	A	netflow.sprocketdata.com
66.101.58.162	PTR	scoter.ename.com
66.101.58.182	PTR	mail.wampa.net
66.101.58.198	A	whiterabbit.unspecific.com
66.101.58.202	A	fawkes.sourcemage.org
66.101.58.203	PTR	www.sourcemage.org
66.101.58.203	A	sourcemage.org
66.101.58.204	A+PTR	mail.sourcemage.org
66.101.58.204	A	ns1.sourcemage.org
66.101.58.204	A	mail1.sourcemage.org
66.101.58.205	PTR	ns1.sourcemage.org
66.101.58.206	PTR	ns2.sourcemage.org
66.101.58.214	A+PTR	mail.techadept.com
66.101.58.214	A	mosaek.com
66.101.58.214	A	techadept.net
66.101.58.222	PTR	ceterus.com
66.101.58.242	A	pfs-lms.com
66.101.58.242	A	promeland.com
66.101.58.245	A	mail.promeland.com
66.101.58.250	A	win2k.sprocketdata.com