Robtex

Up: 5.42.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 5.42.248.0/22
Down right: 5.42.252.0/22

IP	Type	Hostname
5.42.248.4	A+PTR	gen1.xenel.com
5.42.248.5	A+PTR	gen.xenel.com
5.42.248.6	A+PTR	mx1.xenel.com
5.42.248.7	A+PTR	mx2.xenel.com
5.42.248.10	A	xenel.com
5.42.248.25	A+PTR	mail.safraco.com
5.42.248.26	A+PTR	mail1.safraco.com
5.42.248.36	A	mail.xenel.com
5.42.248.82	A+PTR	mail.ahalgosaibi.com
5.42.248.123	PTR	mail2.solbsteel.com
5.42.248.123	A	mail.solbsteel.com
5.42.248.123	A	mail1.solbsteel.com
5.42.249.3	A+PTR	ftp.smc.com.sa
5.42.249.52	A+PTR	mail.smc.com.sa
5.42.249.54	A+PTR	smc.com.sa
5.42.249.54	A+PTR	www.smc.com.sa
5.42.249.56	A+PTR	rds.smc.com.sa
5.42.249.98	A+PTR	mx1.gib-sa.com
5.42.249.101	A	ns1.gib-sa.com
5.42.249.101	A	ns1.gib.sa
5.42.249.209	A	www.alhokair.com
5.42.249.209	A	alhokair.com
5.42.249.229	A+PTR	mail1.alsarif.sa
5.42.250.30	A	seha.sa
5.42.250.246	A	tsapo.com
5.42.250.246	A	mail.tsapo.com
5.42.250.247	PTR	mail.tsapo.com
5.42.251.185	A+PTR	mail.alhokair.com
5.42.251.186	A+PTR	mail.alhokair.com
5.42.252.1	A+PTR	maildr.argas.com
5.42.252.73	A+PTR	sts.kingabdulazizcenter.com
5.42.252.73	A+PTR	sso.kingabdulazizcenter.com
5.42.252.74	A+PTR	contents.kingabdulazizcenter.com
5.42.252.74	A+PTR	mysite.kingabdulazizcenter.com
5.42.252.74	PTR	survey.kingabdulazizcenter.com
5.42.252.78	PTR	library.kingabdulazizcenter.com
5.42.252.80	A+PTR	mobile.kingabdulazizcenter.com
5.42.252.81	A+PTR	mail.kingabdulazizcenter.com
5.42.252.82	A+PTR	mail.kingabdulazizcenter.com
5.42.252.209	PTR	mail.lincolnksa.com
5.42.254.4	A+PTR	mail.jomel-ksa.com
5.42.254.6	A	www.jomel-ksa.com
5.42.254.6	A	jomel-ksa.com
5.42.254.115	A+PTR	maila.riyadhschools.edu.sa
5.42.254.115	A	mail.riyadhschools.edu.sa
5.42.254.155	A	imap.al-islam.com
5.42.254.155	A	kingkhalid.org.sa