Robtex

Up: 81.21.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 81.21.48.0/21
Down right: 81.21.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.21.48.19	A+PTR	ins1.inet.net.sa
81.21.48.19	A	jed.inet.net.sa
81.21.48.19	A	ryd.inet.net.sa
81.21.48.20	PTR	ins2.inet.net.sa
81.21.48.20	A	jed.inet.net.sa
81.21.48.20	A	ryd.inet.net.sa
81.21.48.21	PTR	ins3.inet.net.sa
81.21.48.21	A	jed.inet.net.sa
81.21.48.21	A	ryd.inet.net.sa
81.21.48.22	PTR	mail.inet.net.sa
81.21.48.35	A	proxy1.inet.net.sa
81.21.48.36	A	proxy2.inet.net.sa
81.21.48.37	A+PTR	proxy.inet.net.sa
81.21.48.51	A	csacs.inet.net.sa
81.21.48.52	A	console.inet.net.sa
81.21.48.52	A	xconsole.inet.net.sa
81.21.48.53	A	csacs2.inet.net.sa
81.21.48.66	A	aconcagua.inet.net.sa
81.21.48.80	A+PTR	concord.inet.net.sa
81.21.48.81	A	smarts.inet.net.sa
81.21.48.82	A	vap.inet.net.sa
81.21.48.83	A+PTR	vdc.inet.net.sa
81.21.48.132	A	webgw.inet.net.sa
81.21.48.148	A+PTR	mx1.inet.net.sa
81.21.53.2	A	www.srp.edu.sa
81.21.53.2	A	azcourses.info
81.21.53.2	A	cpanel-inet.com
81.21.53.59	A+PTR	mail.alkamal-sa.com
81.21.53.61	A+PTR	mx.alkamal-sa.com
81.21.53.161	PTR	mail.alshayajed.com
81.21.53.211	PTR	mail.asyaholding.com
81.21.53.211	A	mail.shoaint.com
81.21.53.211	A	mail.alremouz.com
81.21.54.22	A	sar.com.sa
81.21.54.22	A	www.sar.com.sa
81.21.54.59	A	mail2.rajhisteel.com
81.21.54.101	A+PTR	smtp.joufcem.com.sa
81.21.54.182	A+PTR	mail1.diyar.com
81.21.54.183	A+PTR	mail2.diyar.com
81.21.54.183	A	mail1.diyar.com
81.21.54.186	A	mail.diyar.com
81.21.54.187	A	mail.diyar.com
81.21.55.100	A	alromaizan.net
81.21.56.5	A	www.taajeer.com
81.21.56.5	A	primo.sa
81.21.56.58	A+PTR	mail.mashail.com.sa
81.21.56.58	A	mail.berfier.com
81.21.56.61	A	*.berfier.com
81.21.56.73	A	www.mashail.com.sa
81.21.56.73	A	mashail.com
81.21.56.73	A	mashail.com.sa
81.21.56.130	A+PTR	smtp2.joufcem.com.sa
81.21.56.181	PTR	mail2.sadad.com
81.21.56.193	A+PTR	mail.alraedah.finance
81.21.57.130	A	proxy4.inet.net.sa
81.21.58.1	PTR	inma-ktr-rtr1.ms.inet.net.sa
81.21.58.50	A+PTR	mail.al-khaleej.net
81.21.58.51	A	www.al-khaleej.net
81.21.58.51	A	al-khaleej.net
81.21.58.99	A	smtp.smas-ip.com
81.21.58.110	A	mx1.mashail.com.sa
81.21.58.136	PTR	mail.ama-office.net
81.21.59.5	A+PTR	imap.mt-ksa.com
81.21.59.5	A+PTR	mail.mt-ksa.com
81.21.59.5	A+PTR	smtp.mt-ksa.com
81.21.59.60	PTR	domsrvsaryd1.cpksa.com
81.21.59.82	A	avantaaetg.com
81.21.59.114	PTR	mail.creative-sols.com
81.21.59.114	PTR	mail.dr-cafe.com
81.21.59.114	PTR	mail.rajhi.com
81.21.59.116	A	mail.alrajhico.com
81.21.59.132	A	mail.sadad.com
81.21.59.134	A+PTR	mail1.sadad.com
81.21.60.93	A	exchange.allied-medical.com
81.21.60.93	A	elite-ta.com
81.21.60.93	A	allied-medical.com
81.21.60.94	PTR	mesgp.elseifgroup.com
81.21.60.94	A	email.elseifgroup.com
81.21.60.237	A	inet.net.sa
81.21.60.237	A	www.inet.net.sa
81.21.60.250	PTR	mail.saudivetonit.com
81.21.61.131	A	mail.umscl.com
81.21.61.147	A	tachabeauty.com
81.21.62.213	PTR	mail.tsapo.com
81.21.63.6	A	geidea.dyndns-office.com
81.21.63.58	A	email.scs.com.sa
81.21.63.83	A	medicaplus.net
81.21.63.252	A+PTR	vgw.inet.net.sa