Robtex

Up: 86.51.152.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 86.51.156.0/23
Down right: 86.51.158.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
86.51.156.26	A+PTR	mailk.kindasa.com
86.51.156.38	PTR	mail.skabco.com
86.51.156.50	PTR	mail.almajalg4s.com
86.51.156.78	PTR	static-86-51-156-78.mobily.com.sa
86.51.156.78	A	mail1.alathar.com
86.51.156.78	A	mail.altalayi.com
86.51.156.174	PTR	static-86-51-156-174.mobily.com.sa
86.51.156.174	A	mail1.jamjoompharma.com
86.51.156.202	PTR	static-86-51-156-202.mobily.com.sa
86.51.156.202	A	mail.lnserv02.lomarthobe.com
86.51.156.202	A	lnserv02.lomarthobe.com
86.51.156.255	PTR	static-86-51-156-255.mobily.com.sa
86.51.157.0	PTR	static-86-51-157-0.mobily.com.sa
86.51.157.173	PTR	static-86-51-157-173.mobily.com.sa
86.51.157.173	A	access.yasref.com
86.51.157.180	PTR	static-86-51-157-180.mobily.com.sa
86.51.158.66	A	mail.zagzoog.com
86.51.158.99	A+PTR	mx3.pbad.sbg.com.sa
86.51.158.242	A+PTR	mail.sbg-mp.com
86.51.158.242	A	mail.sbgmp.com
86.51.158.245	PTR	static-86-51-158-245.mobily.com.sa
86.51.158.245	A	sbgmp.com
86.51.158.245	A	sbg-mp.net
86.51.158.253	PTR	static-86-51-158-253.mobily.com.sa
86.51.158.253	A	mail.jed.gov.sa
86.51.159.4	A+PTR	jeddah2.zfp.com
86.51.159.34	PTR	static-86-51-159-34.mobily.com.sa
86.51.159.37	PTR	static-86-51-159-37.mobily.com.sa
86.51.159.37	A	anontrunk.tu.edu.sa
86.51.159.37	A	cpsimages.tu.edu.sa
86.51.159.38	PTR	static-86-51-159-38.mobily.com.sa
86.51.159.39	PTR	static-86-51-159-39.mobily.com.sa
86.51.159.40	PTR	static-86-51-159-40.mobily.com.sa
86.51.159.40	A	appt.tu.edu.sa
86.51.159.41	PTR	static-86-51-159-41.mobily.com.sa
86.51.159.41	A	mail1.tu.edu.sa
86.51.159.42	A+PTR	mx2.tu.edu.sa
86.51.159.45	A	infosys.tu.edu.sa
86.51.159.47	PTR	static-86-51-159-47.mobily.com.sa
86.51.159.47	A	edugate.tu.edu.sa
86.51.159.50	PTR	static-86-51-159-50.mobily.com.sa
86.51.159.50	A	echo.tu.edu.sa
86.51.159.51	PTR	static-86-51-159-51.mobily.com.sa
86.51.159.51	A	cit.tu.edu.sa
86.51.159.53	PTR	static-86-51-159-53.mobily.com.sa
86.51.159.53	A	ns2.tu.edu.sa
86.51.159.55	A	eval.tu.edu.sa
86.51.159.56	PTR	static-86-51-159-56.mobily.com.sa
86.51.159.56	A	support.tu.edu.sa
86.51.159.56	A	faculty.tu.edu.sa
86.51.159.58	PTR	mx1.tu.edu.sa
86.51.159.132	PTR	server5.enjaztech.com
86.51.159.134	A	unixbrains.com
86.51.159.145	PTR	enjaz5l.enjaztech.com
86.51.159.166	PTR	static-86-51-159-166.mobily.com.sa
86.51.159.167	PTR	static-86-51-159-167.mobily.com.sa
86.51.159.171	PTR	static-86-51-159-171.mobily.com.sa
86.51.159.171	A	yuc.edu.sa
86.51.159.187	PTR	static-86-51-159-187.mobily.com.sa
86.51.159.187	A	yic.edu.sa
86.51.159.187	A	yjes.org.sa