Robtex

Up: 128.65.184.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 128.65.188.0/23
Down right: 128.65.190.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
128.65.188.13	A+PTR	mail.karshenasan-nezam.com
128.65.188.13	A	ns2.karshenasan-nezam.com
128.65.188.13	A	ns1.karshenasan-nezam.com
128.65.188.90	A	ns1.ptamembers.ir
128.65.188.90	A	ns2.ptamembers.ir
128.65.188.90	A	ptamembers.ir
128.65.189.74	A	zahedannezam.ir
128.65.189.206	A	iranpelak.com
128.65.190.68	A	shouderco.com
128.65.190.68	A	shouderoffice.com
128.65.190.68	A	mail.avisaoffice.com
128.65.190.151	PTR	mailer.idehglobal.com