Robtex

Up: 86.51.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 86.51.144.0/22
Down right: 86.51.148.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
86.51.144.0	PTR	static-86-51-144-0.mobily.com.sa
86.51.144.146	PTR	mail.moe.gov.sa
86.51.144.162	PTR	static-86-51-144-162.mobily.com.sa
86.51.145.42	PTR	static-86-51-145-42.mobily.com.sa
86.51.145.50	PTR	static-86-51-145-50.mobily.com.sa
86.51.145.62	PTR	static-86-51-145-62.mobily.com.sa
86.51.145.158	PTR	static-86-51-145-158.mobily.com.sa
86.51.146.2	PTR	static-86-51-146-2.mobily.com.sa
86.51.146.4	PTR	exchange.gulfcatering.com
86.51.146.9	PTR	static-86-51-146-9.mobily.com.sa
86.51.146.18	PTR	static-86-51-146-18.mobily.com.sa
86.51.146.26	PTR	static-86-51-146-26.mobily.com.sa
86.51.146.32	PTR	static-86-51-146-32.mobily.com.sa
86.51.146.33	PTR	static-86-51-146-33.mobily.com.sa
86.51.146.34	PTR	mail.ic.gov.sa
86.51.146.40	PTR	static-86-51-146-40.mobily.com.sa
86.51.146.50	PTR	static-86-51-146-50.mobily.com.sa
86.51.146.51	PTR	static-86-51-146-51.mobily.com.sa
86.51.146.58	PTR	static-86-51-146-58.mobily.com.sa
86.51.146.59	PTR	static-86-51-146-59.mobily.com.sa
86.51.146.80	PTR	static-86-51-146-80.mobily.com.sa
86.51.146.83	PTR	static-86-51-146-83.mobily.com.sa
86.51.146.83	A	mx.c-safety.com.sa
86.51.146.89	PTR	static-86-51-146-89.mobily.com.sa
86.51.146.98	PTR	static-86-51-146-98.mobily.com.sa
86.51.146.104	PTR	static-86-51-146-104.mobily.com.sa
86.51.146.112	PTR	static-86-51-146-112.mobily.com.sa
86.51.146.114	PTR	static-86-51-146-114.mobily.com.sa
86.51.146.121	PTR	static-86-51-146-121.mobily.com.sa
86.51.146.128	PTR	static-86-51-146-128.mobily.com.sa
86.51.146.130	PTR	static-86-51-146-130.mobily.com.sa
86.51.146.147	PTR	static-86-51-146-147.mobily.com.sa
86.51.146.163	PTR	static-86-51-146-163.mobily.com.sa
86.51.146.166	A	webmail.almuttahed.com
86.51.146.168	PTR	static-86-51-146-168.mobily.com.sa
86.51.146.177	PTR	static-86-51-146-177.mobily.com.sa
86.51.146.184	PTR	static-86-51-146-184.mobily.com.sa
86.51.146.185	PTR	static-86-51-146-185.mobily.com.sa
86.51.146.186	PTR	static-86-51-146-186.mobily.com.sa
86.51.146.192	PTR	static-86-51-146-192.mobily.com.sa
86.51.146.202	PTR	static-86-51-146-202.mobily.com.sa
86.51.146.208	PTR	static-86-51-146-208.mobily.com.sa
86.51.146.210	PTR	static-86-51-146-210.mobily.com.sa
86.51.146.225	PTR	static-86-51-146-225.mobily.com.sa
86.51.146.227	A+PTR	sip.riy.btc.com.sa
86.51.146.230	A	btcrevp.riy.btc.com.sa
86.51.146.232	PTR	static-86-51-146-232.mobily.com.sa
86.51.146.233	PTR	static-86-51-146-233.mobily.com.sa
86.51.146.234	PTR	static-86-51-146-234.mobily.com.sa
86.51.146.235	PTR	static-86-51-146-235.mobily.com.sa
86.51.146.240	PTR	static-86-51-146-240.mobily.com.sa
86.51.146.243	PTR	static-86-51-146-243.mobily.com.sa
86.51.146.249	PTR	static-86-51-146-249.mobily.com.sa
86.51.147.37	A	isaloo.com
86.51.147.37	A	www.isaloo.com
86.51.147.37	A	isalsms.com
86.51.147.49	A+PTR	mail.saudconsult.com
86.51.147.49	A	email2.scs.com.sa
86.51.147.49	A	mx1.saudconsult.com
86.51.147.62	A	saudconsult.com
86.51.147.62	A	htmlwww.saudconsult.com
86.51.147.62	A	*.htmlwww.saudconsult.com
86.51.147.67	PTR	mail.thalisa.com
86.51.147.67	PTR	static-86-51-147-67.mobily.com.sa
86.51.147.84	A	saudi-ericsson.com.sa
86.51.147.85	A	vpn.saudi-ericsson.com.sa
86.51.147.113	PTR	static-86-51-147-113.mobily.com.sa
86.51.147.209	PTR	static-86-51-147-209.mobily.com.sa
86.51.147.225	PTR	mail.gosi.gov.sa
86.51.147.230	A	ns1.gosionline.com.sa
86.51.148.26	PTR	static-86-51-148-26.mobily.com.sa
86.51.148.32	PTR	static-86-51-148-32.mobily.com.sa
86.51.148.90	PTR	static-86-51-148-90.mobily.com.sa
86.51.148.162	PTR	static-86-51-148-162.mobily.com.sa
86.51.148.178	PTR	static-86-51-148-178.mobily.com.sa
86.51.148.179	PTR	static-86-51-148-179.mobily.com.sa
86.51.148.202	PTR	static-86-51-148-202.mobily.com.sa
86.51.148.209	PTR	static-86-51-148-209.mobily.com.sa
86.51.148.210	PTR	static-86-51-148-210.mobily.com.sa
86.51.148.210	A	mail.ewiqatar.com
86.51.148.210	A	webmail.naizak.com
86.51.148.249	PTR	static-86-51-148-249.mobily.com.sa
86.51.149.162	PTR	static-86-51-149-162.mobily.com.sa
86.51.149.164	A+PTR	mail.iman-group.com
86.51.149.164	A	smtp.iman-group.com
86.51.149.236	A+PTR	mail.abana.com.sa
86.51.149.236	A	exchcas.abana.com.sa
86.51.149.236	A	abana.com.sa
86.51.150.60	A+PTR	webmail.attejarat.com.sa
86.51.150.60	A+PTR	webmail.mawasims.com.sa
86.51.150.60	A	alnejaidiconsulting.com
86.51.150.123	A+PTR	exchange.fgc.sa
86.51.150.123	A+PTR	exchange.fgcltd.com
86.51.150.178	PTR	static-86-51-150-178.mobily.com.sa
86.51.151.40	PTR	static-86-51-151-40.mobily.com.sa
86.51.151.90	PTR	static-86-51-151-90.mobily.com.sa
86.51.151.96	PTR	static-86-51-151-96.mobily.com.sa
86.51.151.129	PTR	static-86-51-151-129.mobily.com.sa
86.51.151.144	PTR	static-86-51-151-144.mobily.com.sa
86.51.151.168	PTR	static-86-51-151-168.mobily.com.sa
86.51.151.178	PTR	static-86-51-151-178.mobily.com.sa
86.51.151.192	PTR	static-86-51-151-192.mobily.com.sa
86.51.151.226	PTR	static-86-51-151-226.mobily.com.sa
86.51.151.232	PTR	static-86-51-151-232.mobily.com.sa