Robtex

Up: 151.138.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 151.138.0.0/17
Down right: 151.138.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
151.138.1.28	A+PTR	ns1.idearcmedia.com
151.138.1.28	A+PTR	ns1.localsearch.com
151.138.1.28	A+PTR	ns1.superpages.com
151.138.2.30	A	superpages.gte.net
151.138.2.30	A	verizonsuperpages.com
151.138.2.30	A	www.verizonsuperpages.com
151.138.12.53	A	dev.superpersonalloans.com
151.138.12.53	A	dev.superhousecleaners.com
151.138.12.53	A	dev.supermovingpros.com
151.138.13.134	A	dns1.superpages.com
151.138.13.134	A	ftps.superpages.com
151.138.13.134	A	ftpprd1.superpages.com
151.138.13.135	A	dns1.superpages.com
151.138.13.135	A	ftps.superpages.com
151.138.14.20	A	qa2-img1-origin.v.st1.yp.com
151.138.14.27	A	test-afweb.v.st1.yp.com
151.138.14.64	A	stage-shield.v.st1.yp.com
151.138.14.127	A	t.yp.com
151.138.15.18	A	yellowpages.com
151.138.15.26	A	superpages.com
151.138.16.108	A	cfit-dk.dexknows.com
151.138.22.10	A+PTR	ns1.gslb.superpages.com
151.138.22.30	A+PTR	dexmediaverify.com
151.138.22.37	A+PTR	ypnbt.superpages.com
151.138.22.50	A	ns1.superyellowpages.com
151.138.22.50	A	superpages.com
151.138.22.50	A	buscar.superpages.com
151.138.23.18	A	neoapp-sb.superpages.com
151.138.23.30	PTR	update.supermedia.com
151.138.23.30	A	update.superpages.com
151.138.30.100	A+PTR	sp-dnsi1.superpages.com
151.138.47.4	A	infoblox-dns4.superpages.com
151.138.47.4	A	dnsinfoext.superpages.com
151.138.47.5	A+PTR	infoblox-dns5.superpages.com
151.138.47.6	A+PTR	infoblox-dns6.superpages.com
151.138.47.10	PTR	ns.idearcmedia.com
151.138.47.10	PTR	ns.localsearch.com
151.138.47.10	PTR	ns.superpages.com
151.138.72.10	PTR	ns2.gslb.superpages.com
151.138.72.30	A	www2.superpages.com
151.138.72.74	A	clicks2.superpages.com
151.138.150.80	A	iog-dns1.v.ev1.yp.com
151.138.150.150	A	superpages.com
151.138.160.10	A+PTR	ns3.localsearch.com
151.138.160.10	A+PTR	ns3.superpages.com
151.138.174.10	A	ns2.gslb.superpages.com
151.138.174.84	A	api3.superpages.com
151.138.242.134	A	ns1.mail.6.umikl.com
151.138.251.23	A+PTR	ftp01.idearc.com
151.138.251.23	A+PTR	ftp01.supermedia.com
151.138.251.25	A	ftp01-test.idearc.com
151.138.251.122	A	webmail.gslb4.dexmedia.com
151.138.252.30	A	akadns6.yellowpages.com
151.138.253.22	A	dfw2w2ssmtp2.idearc.com
151.138.253.22	A	dfw2w2ssmtp2.solutiondirect.com
151.138.253.22	A	dfw2w2ssmtp2.solutionsdirectmail.com
151.138.253.23	PTR	dfw2w2ssmtp4.idearc.com
151.138.253.23	PTR	dfw2w2ssmtp4.idearcmedia.com
151.138.253.23	PTR	dfw2w2ssmtp4.idearcsem.com
151.138.254.20	PTR	testconnect.supermedia.com
151.138.254.21	A+PTR	outbound.idearc.com
151.138.254.21	A+PTR	outbound.supermedia.com