Robtex

Up: 151.138.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 151.138.0.0/20
Down right: 151.138.16.0/20
(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
151.138.2.236	A	gteis.com
151.138.12.53	PTR	dev.experts321.com
151.138.12.53	PTR	dev.superaccountant.com
151.138.12.53	PTR	dev.superaccounting.com
151.138.13.134	A+PTR	ftpprd1.superpages.com
151.138.13.134	A+PTR	ftps.superpages.com
151.138.13.134	A	dns1.superpages.com
151.138.13.135	PTR	ftpprd2.superpages.com
151.138.13.135	A+PTR	ftps.superpages.com
151.138.13.135	A	dns1.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
151.138.14.244	A	lists.yellowpages.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
151.138.22.64	A+PTR	m-stage.superpages.com
151.138.22.65	A+PTR	bidfeed.superpages.com
151.138.22.72	A	video.superpages.com
151.138.22.73	A	iarbiz.us
151.138.22.98	A	shopping.bigbook.com
151.138.22.98	A	yellowpages.bigbook.com
151.138.22.99	A	imgorig.superpages.com
151.138.22.100	A	vision.superpages.com
151.138.22.130	A	cgi.superpages.com
151.138.22.132	A+PTR	content.superpages.com
151.138.22.135	A	mpactions.superpages.com
151.138.22.136	A	superpages.dex-digital.com
151.138.22.160	A+PTR	listingyourbusinessonline.com
151.138.22.161	A	mythryvbenefits.com
151.138.22.162	A+PTR	dev-ipad.supermedia.com
151.138.22.163	PTR	jscss.superpages.com
151.138.22.163	A	origin-jscss.superpages.com
151.138.22.195	A	bidweb.superpages.com
151.138.22.196	A	claimlisting.superpages.com
151.138.22.197	A	advertising.superpages.com
151.138.22.199	PTR	dexebill.com
151.138.22.199	A	my.dexmedia.com
151.138.22.236	A+PTR	freegrader.com
151.138.22.236	PTR	www.freegrader.com
151.138.22.238	PTR	dexonline.com
151.138.22.238	A+PTR	www.dexonline.com
151.138.22.238	A	www.locallaunch.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