Robtex

Up: 208.231.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 208.231.96.0/20
Down right: 208.231.112.0/20

IP	Type	Hostname
208.231.96.2	A+PTR	nworlaadrt02.xfoneusa.com
208.231.96.2	A	ndcr2.datasync.net
208.231.96.3	PTR	nworlaadrt01.xfoneusa.com
208.231.96.3	A	ndcr1.datasync.net
208.231.96.10	A	firebox.datasync.net
208.231.96.34	PTR	mail.gmi.net
208.231.96.73	A	callmanagerla-nts.com
208.231.96.102	PTR	mail-node-02.i-55.com
208.231.96.202	PTR	mail.zzip.cc
208.231.96.203	PTR	mail.cblink.com
208.231.96.204	PTR	mail.netsouth.cc
208.231.96.250	A+PTR	ns7.datasync.com
208.231.96.250	A	learjet60.canufly.net
208.231.96.250	A	ns2.netsouth.cc
208.231.96.251	PTR	ns6.datasync.com
208.231.96.251	A	citationx.canufly.net
208.231.96.252	PTR	ns5.datasync.com
208.231.100.6	A	exit12.i-55.com
208.231.100.7	A	heathnavarre.com
208.231.100.101	A	intershop.i-55.com
208.231.105.4	A	thatsfast.net
208.231.105.4	A	knightsace.com
208.231.105.45	A	www.pine-la.net
208.231.105.45	A	pine-la.net
208.231.105.190	A	its2fast.com
208.231.105.190	A	www.its2fast.com
208.231.106.13	A	mail.secureuptime.com
208.231.112.2	PTR	www.i-55.com
208.231.112.11	PTR	www.xfone.com
208.231.112.11	A	xfone.net
208.231.115.4	A	sneekyleeker.com
208.231.119.41	PTR	mail.hammond.org
208.231.120.2	A	www.tangischools.com
208.231.120.3	PTR	mail.tangischools.org
208.231.120.3	A	mail.tangischools.com
208.231.120.3	A	mail.tangischools.net
208.231.120.5	A	smtp1.tangischools.com
208.231.124.36	A	lumberjacks.bsb.k12.la.us
208.231.124.36	A	mail.bsb.k12.la.us
208.231.124.51	A	terracemiddle.org
208.231.124.56	A	longavenue.org
208.231.127.3	PTR	mail.fara.com
208.231.127.41	A+PTR	kelly.i-55.com
208.231.127.157	PTR	mail.tangiclerk.org