Robtex

Up: 188.75.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 188.75.80.0/22
Down right: 188.75.84.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
188.75.80.19	PTR	int0.client.access.fanaptelecom.net
188.75.80.137	PTR	int0.client.access.fanaptelecom.net
188.75.80.137	A	abfakashan.net
188.75.80.215	PTR	int0.client.access.fanaptelecom.net
188.75.81.21	PTR	int0.client.access.fanaptelecom.net
188.75.81.21	A	www.gtc.ir
188.75.81.28	A	mail.gtc.ir
188.75.81.51	A+PTR	mail.bupc.ir
188.75.81.148	A	gtc.ir
188.75.82.6	A	tehrantax.ir
188.75.82.14	PTR	int0.client.access.fanaptelecom.net
188.75.82.14	A	imps.ac.ir
188.75.82.25	PTR	int0.client.access.fanaptelecom.net
188.75.82.25	A	udeaport.ir
188.75.82.76	A	mail.estiri.net
188.75.82.90	PTR	int0.client.access.fanaptelecom.net
188.75.82.173	PTR	smtp.persiansteel.co
188.75.82.173	A	mail.persiansteel.co
188.75.82.174	PTR	int0.client.access.fanaptelecom.net
188.75.82.174	A	www.entakala.com
188.75.83.227	PTR	mail1.steelalborz.com
188.75.83.227	A	mail1.saabsteel.net
188.75.83.227	A	mail1.steelalborz.us
188.75.83.234	PTR	int0.client.access.fanaptelecom.net
188.75.84.19	PTR	int0.client.access.fanaptelecom.net
188.75.84.40	PTR	int0.client.access.fanaptelecom.net
188.75.84.118	PTR	int0.client.access.fanaptelecom.net
188.75.84.118	A	aaseman.com
188.75.84.188	PTR	int0.client.access.fanaptelecom.net
188.75.84.235	PTR	int0.client.access.fanaptelecom.net
188.75.84.235	A	ns1.bbpharmaco.ir
188.75.84.236	PTR	int0.client.access.fanaptelecom.net
188.75.84.236	A	ns2.bbpharmaco.ir
188.75.84.237	A	bbpharmaco.ir
188.75.84.237	A	bbpharmaco.com
188.75.85.4	PTR	int0.client.access.fanaptelecom.net
188.75.85.253	A	ns1.apll.ir
188.75.85.253	A	mail.apll.ir
188.75.86.13	PTR	int0.client.access.fanaptelecom.net
188.75.86.108	PTR	int0.client.access.fanaptelecom.net
188.75.86.108	A	www.saex.ir
188.75.86.108	A	saex.ir
188.75.86.190	PTR	int0.client.access.fanaptelecom.net
188.75.86.194	PTR	int0.client.access.fanaptelecom.net
188.75.86.199	PTR	ns1.oeoc.ir
188.75.86.232	A	mail.ikahkeshan.com
188.75.86.232	A	flamezel.com
188.75.87.13	PTR	usc.ac.ir
188.75.87.82	PTR	int0.client.access.fanaptelecom.net
188.75.87.82	A	ledlianghuagongcheng.com
188.75.87.82	A	mail.zamzamco.ir
188.75.87.91	PTR	int0.client.access.fanaptelecom.net
188.75.87.91	A	mail.vat.gov.ir
188.75.87.91	A	vat.gov.ir
188.75.87.105	PTR	mail.nasbniroo.com
188.75.87.186	PTR	int0.client.access.fanaptelecom.net
188.75.87.195	PTR	mail.salca-venezuela.com
188.75.87.195	A	ns.pireco.ir
188.75.87.195	A	mail.pireco.ir
188.75.87.198	PTR	int0.client.access.fanaptelecom.net
188.75.87.198	A	mail.pireco.ir
188.75.87.210	A+PTR	mail.sadragroup.ir
188.75.87.210	A	mail.sadra.ir
188.75.87.210	A	mail.imico.co
188.75.87.221	A	mail.kippco.org
188.75.87.253	A	mailer.sadra.ir