Robtex

Up: 72.13.58.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 72.13.58.0/25
Down right: 72.13.58.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.13.58.32	A+PTR	fo-vm07.verisignlabs.com
72.13.58.32	A	mxer.cc
72.13.58.32	A	ns.vrsnrpt-labs.cc
72.13.58.33	A+PTR	fo-vm26.verisignlabs.com
72.13.58.33	A	secspider.cs.ucla.edu
72.13.58.35	A	fo-vm08.verisignlabs.com
72.13.58.38	A	bad-sig.dane.verisignlabs.com
72.13.58.41	A	orentas.com
72.13.58.42	A	insitekeywordsdemo.com
72.13.58.47	A	www.paradoxinfotech.com
72.13.58.47	A	759.wbv-web.cc
72.13.58.47	A	mobileviewreseller.com
72.13.58.57	A	phanipattapu.com
72.13.58.64	PTR	farnsworth.verisignlabs.com
72.13.58.64	A	validatorsearch.verisignlabs.com
72.13.58.64	A	verisignlabs.net
72.13.58.65	A	svn.verisignlabs.com
72.13.58.67	A+PTR	fo-vm23.verisignlabs.com
72.13.58.67	A	vdhdemo.com
72.13.58.67	A	patkane.name
72.13.58.70	A+PTR	dnsviz.verisignlabs.com
72.13.58.70	A	www.dnsviz.net
72.13.58.70	A	*.dnsviz.net
72.13.58.75	A+PTR	lists.verisignlabs.com
72.13.58.76	A+PTR	ns0.dnssec-or-not.com
72.13.58.76	A	ns0.dnssec-or-not.net
72.13.58.76	A	ns0.dnssec-or-not.org
72.13.58.77	A	f956fed5b307d1ee.dnssec-or-not.net
72.13.58.77	A	ns1.auraiys.com
72.13.58.80	A+PTR	ns1.dnssec-or-not.com
72.13.58.80	A	ns1.dnssec-or-not.org
72.13.58.80	A	ns1.dnssec-or-not.net
72.13.58.82	A	domaintagcloud.com
72.13.58.84	A	fo-vm25.verisignlabs.com
72.13.58.93	A+PTR	nsdb.verisignlabs.com
72.13.58.93	A	ortest0ns.verisignlabs.com
72.13.58.100	A+PTR	vfns1.verisignlabs.com
72.13.58.100	A	vfns1.packet-pushers.com
72.13.58.101	A+PTR	vfns2.verisignlabs.com
72.13.58.101	A	vfns2.packet-pushers.com
72.13.58.105	A	dnssec-debugger-v4.verisignlabs.com
72.13.58.105	A	dnssec-debugger-c.verisignlabs.com
72.13.58.109	A	dont-contact.us
72.13.58.110	A	mail.dont-contact.us
72.13.58.112	A+PTR	dnsviz-db.verisignlabs.com