Robtex

Up: 66.28.82.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 66.28.82.0/25
Down right: 66.28.82.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.28.82.6	A+PTR	mail.guavatech.com
66.28.82.12	A	gtultranet.com
66.28.82.12	A	guava-technologies.com
66.28.82.12	A	hostmaster.gtvar.com
66.28.82.13	A+PTR	mail2.guavatech.com
66.28.82.137	A	barczykfamily.com
66.28.82.137	A	barczykfamily.net