Robtex

Up: 185.113.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.113.56.0/23
Down right: 185.113.58.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.113.56.5	PTR	mail.conference101.ir
185.113.56.5	PTR	mail.kavyansazeh.ir
185.113.56.5	A	mail2.nojancompany.com
185.113.56.9	A	www.arak.ir
185.113.56.9	A	terminal.arak.ir
185.113.56.9	A	arakbus.arak.ir
185.113.56.66	PTR	iran125.com
185.113.56.66	PTR	iran137.com
185.113.56.66	PTR	arak125.ir
185.113.56.110	A	ed.arak.ir
185.113.56.111	A	ex3.arak.ir
185.113.56.112	A	ex2.arak.ir
185.113.56.113	A	exchange.satiaisp.com
185.113.56.117	A	srv.satiaisp.com
185.113.56.122	A+PTR	www.satiaisp.com
185.113.56.122	PTR	cms.satiaisp.com
185.113.56.122	PTR	satiaisp.com
185.113.56.124	A	ns1.arak.ir
185.113.56.124	A	dns2.satiaisp.com
185.113.56.124	A	ns4.satiaisp.ir
185.113.56.125	PTR	ns4.satiaisp.com
185.113.56.125	PTR	ns1.33805.ir
185.113.56.125	A+PTR	ns1.arak.ir
185.113.56.134	A	mail.astp.ir
185.113.56.136	A	ns2.astp.ir
185.113.56.146	A	astp.ir
185.113.56.150	A	ns1.astp.ir
185.113.57.109	A	mail.irancombine.com
185.113.57.165	A+PTR	mail.arak.ir
185.113.57.228	A	ns3.iralco.ir
185.113.57.230	A	ns4.iralco.ir
185.113.57.231	A	iralco.ir
185.113.57.231	A	www.iralco.ir
185.113.57.235	A	ns2.iralco.ir
185.113.57.241	A	ns1.iralco.ir
185.113.58.76	A	mail.mpedc.ir
185.113.58.77	A	www.mpedc.ir
185.113.58.77	A	mpedc.ir
185.113.58.155	A	www.abfamarkazi.ir
185.113.58.155	A	abfamarkazi.ir
185.113.59.131	A+PTR	mail.khomeinums.ac.ir
185.113.59.131	A	mail.ns1.khomeinums.ac.ir
185.113.59.131	A	ns1.khomeinums.ac.ir
185.113.59.132	A	khomeinums.ac.ir
185.113.59.132	A	www.khomeinums.ac.ir
185.113.59.253	A	ns1.shiranserver.ir
185.113.59.253	A	ns2.shiranserver.ir
185.113.59.253	A	mail.shiranserver.ir