Robtex

Up: 188.135.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 188.135.12.0/23
Down right: 188.135.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
188.135.12.97	A+PTR	mail.takatuf.om
188.135.12.105	PTR	static.isp.ooredoo.om
188.135.12.105	A	abgho.dyndns.org
188.135.12.143	A	mx01.phoenixom.co.om
188.135.12.146	PTR	static.isp.ooredoo.om
188.135.12.146	A	alnahdaresort.dyndns.org
188.135.12.161	PTR	static.isp.ooredoo.om
188.135.12.161	A	mail.ibnsinaho.com
188.135.12.213	A	email.gisoman.net
188.135.12.213	A	email.gbcmoman.net
188.135.12.213	A	www.gbcmoman.net
188.135.12.230	PTR	static.isp.ooredoo.om
188.135.12.239	PTR	static.isp.ooredoo.om
188.135.12.239	A	tour-oman.com
188.135.12.239	A	mx02.travelcity-oman.com
188.135.13.34	A	www.adraklive.com
188.135.13.34	A	mx.adraklive.com
188.135.13.34	A	adraklive.com
188.135.13.64	A	email.nmassh.com
188.135.13.88	PTR	mx02.travelcity-oman.com
188.135.13.115	A	hilti1.net
188.135.13.115	A	bsemail.net
188.135.13.131	A	oman-shipping.com
188.135.13.152	A	ndssms.com
188.135.13.152	A	allooman.net
188.135.13.152	A	smsoman.com
188.135.13.245	A	koh-pp.com
188.135.14.54	A	omantadawul.com
188.135.14.122	A	alnabamail.com
188.135.14.137	A	stomovpn.stomo.com.om
188.135.15.66	A	azyanivms.com
188.135.15.125	A+PTR	mail.oosc.net
188.135.15.125	A	ooscnet.net
188.135.15.125	A	mail.ooscnet.net
188.135.15.140	A	mx2.badrinvest.com
188.135.15.140	A	mx2.aakgc.com
188.135.15.143	PTR	mail.aakgc.com
188.135.15.143	A	mx1.aakgc.com
188.135.15.143	A	aakgchomx.ddns.net
188.135.15.181	A	mx3.takamul.com
188.135.15.187	A	omantimes.dyndns.org
188.135.15.191	A	www.tic.om
188.135.15.191	A	nawras.al-saleh.com
188.135.15.191	A	tic.om
188.135.15.217	PTR	mail.chedimuscat.com
188.135.15.217	A	chedimuscat.com
188.135.15.220	PTR	mail2.abrajoman.com
188.135.15.220	A	www.abrajoman.com
188.135.15.220	A	abrajoman.com
188.135.15.230	A+PTR	exchange.hamdanoman.com
188.135.15.233	PTR	mx02.travelcity-oman.com