Robtex

Up: 198.41.0.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 198.41.0.0/26
Down right: 198.41.0.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.41.0.1	PTR	rv.core-fo.lks2.verisign.com
198.41.0.2	PTR	r2.core-fo.lks2.verisign.com
198.41.0.3	PTR	r3.core-fo.lks2.verisign.com
198.41.0.4	A+PTR	a.root-servers.net
198.41.0.4	A	ns.7583.20130429.deleted.gkg.net
198.41.0.4	A	simonprague.com
198.41.0.5	A	rs0.internic.net
198.41.0.6	PTR	rs.internic.net
198.41.0.6	A	www.internic.kz
198.41.0.6	A	internic.sn
198.41.0.10	A+PTR	old-j-root-servers-net.verisign-grs.net
198.41.0.69	PTR	noc.crsnic.net