Robtex

Up: 31.193.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 31.193.144.0/21
Down right: 31.193.152.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.193.144.2	PTR	31.193.144.2.arianrp.ir
31.193.144.18	PTR	31.193.144.18.arianrp.ir
31.193.144.18	A	www.daroobar.ir
31.193.144.20	PTR	31.193.144.20.arianrp.ir
31.193.144.20	A	www.barandehshow.ir
31.193.144.58	PTR	31.193.144.58.arianrp.ir
31.193.144.58	A	noorolasfia.com
31.193.144.77	PTR	31.193.144.77.arianrp.ir
31.193.144.77	A	60tir.com
31.193.144.173	PTR	31.193.144.173.arianrp.ir
31.193.145.5	PTR	31.193.145.5.arianrp.ir
31.193.145.12	PTR	31.193.145.12.arianrp.ir
31.193.145.29	PTR	31.193.145.29.arianrp.ir
31.193.145.44	PTR	31.193.145.44.arianrp.ir
31.193.145.45	PTR	31.193.145.45.arianrp.ir
31.193.145.47	PTR	31.193.145.47.arianrp.ir
31.193.145.61	PTR	31.193.145.61.arianrp.ir
31.193.145.77	PTR	31.193.145.77.arianrp.ir
31.193.145.173	PTR	31.193.145.173.arianrp.ir
31.193.146.10	A	mohsen.arianrp.ir
31.193.146.250	A+PTR	mail.tci1.ir
31.193.146.250	A	mail.codejia.com
31.193.146.250	A	mail.tct1.ir
31.193.147.9	PTR	31.193.147.9.arianrp.ir
31.193.147.13	PTR	31.193.147.13.arianrp.ir
31.193.147.41	PTR	31.193.147.41.arianrp.ir
31.193.148.2	PTR	31.193.148.2.arianrp.ir
31.193.148.11	A	ns2.arianrp.ir
31.193.148.11	A	ns2.arianrp.com
31.193.149.13	PTR	31.193.149.13.arianrp.ir
31.193.149.51	PTR	31.193.149.51.arianrp.ir
31.193.149.65	PTR	31.193.149.65.arianrp.ir
31.193.149.78	PTR	31.193.149.78.arianrp.ir
31.193.149.78	A	mailserver.shargroup.ir
31.193.149.91	PTR	31.193.149.91.arianrp.ir
31.193.149.93	PTR	31.193.149.93.arianrp.ir
31.193.149.98	PTR	31.193.149.98.arianrp.ir
31.193.150.86	PTR	31.193.150.86.arianrp.ir
31.193.150.86	A	www.samapardaz.com
31.193.150.98	PTR	31.193.150.98.arianrp.ir
31.193.150.98	A	*.amintours.com
31.193.150.98	A	amintours.com
31.193.151.5	A	parsparvaz.ir
31.193.151.5	A	samapardaz.co
31.193.151.5	A	www.samapardaz.co
31.193.152.2	A+PTR	ntp.day.ir
31.193.152.11	PTR	day011.day.ir
31.193.152.11	A	dns.day.ir
31.193.152.11	A	ns.day.ir
31.193.152.12	PTR	h12-ipv4-31-193-152.mynet.it
31.193.152.12	A	dns.day.ir
31.193.152.12	A	support.day.ir
31.193.152.16	PTR	31.193.152.16.arianrp.ir
31.193.152.16	A	daytelecom.com
31.193.152.28	PTR	h28-ipv4-31-193-152.mynet.it
31.193.152.28	A	www.parscritic.ir
31.193.152.28	A	www.rgaltd.net
31.193.152.29	PTR	31.193.152.29.arianrp.ir
31.193.152.33	PTR	31.193.152.33.arianrp.ir
31.193.152.33	A	www.zistclub.com
31.193.152.33	A	www.luxaface.com
31.193.152.35	PTR	dsd2.daytelecom.com
31.193.152.35	A	mail.kiec.ir
31.193.152.35	A	shahrooz3d.com
31.193.152.36	PTR	31.193.152.36.arianrp.ir
31.193.152.49	PTR	49.daytelecom.com
31.193.152.50	A	mail.sazehpooshesh.com
31.193.152.50	A	mail.infotechme.ws
31.193.152.50	A	mail.xdata.ir
31.193.152.64	PTR	vcludtip.daytelecom.com
31.193.152.64	A	myday.ir
31.193.152.64	A	www.persianpishraneh.com
31.193.152.65	PTR	khouyada.daytelecom.com
31.193.152.66	PTR	shazand.daytelecom.com
31.193.152.80	PTR	wb11.daytelecom.com
31.193.152.80	A	tahvieh-tabrid.com
31.193.152.80	A	jaufe.com
31.193.152.83	PTR	mail.sms-group-ir.com
31.193.152.87	PTR	behgozin.daytelecom.com
31.193.152.96	A+PTR	mail.mdf-groups.com
31.193.152.96	A	mail.mdfgroup.com
31.193.152.97	A+PTR	mail.gssvalve.com
31.193.152.98	A+PTR	mail.mojnikan.com
31.193.152.99	PTR	mail.rasa.co.ir
31.193.152.113	PTR	sahrafood.com
31.193.152.113	A	www.sahrafood.com
31.193.152.114	PTR	mail.gilrec.co.ir
31.193.152.114	A	mail.grec.ir
31.193.152.117	PTR	mirshahi.daytelecom.com
31.193.152.117	A	mail.redrosegroup.ir
31.193.152.117	A	www.my-class.ir
31.193.152.137	PTR	137.daytelecom.com
31.193.152.137	A	rasha.co