Robtex

Up: 66.207.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.207.48.0/21
Down right: 66.207.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.207.55.4	PTR	ns1.webfyre.com
66.207.55.4	A	whartonfamily.net
66.207.55.4	A	ns2.webfyre.com
66.207.55.76	A	ns1.tracsvr02.com
66.207.55.77	A	ns2.tracsvr02.com
66.207.55.92	A	traclri.com
66.207.58.48	A	xwsjggudhcb.com