Robtex

Up: 12.42.50.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 12.42.50.0/25
Down right: 12.42.50.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
12.42.50.4	PTR	www.psn.prudential.com
12.42.50.9	A+PTR	pruvend.prudential.com
12.42.50.9	A+PTR	pruvpn.prudential.com
12.42.50.23	PTR	www.cm1.prusec.com
12.42.50.27	PTR	helpme-t.prudential.com
12.42.50.27	PTR	helpmefts.prudential.com
12.42.50.29	PTR	helpmelaw.prudential.com
12.42.50.30	A	helpmenpd-t.prudential.com
12.42.50.44	A+PTR	community.prudential.com
12.42.50.44	PTR	www2.prudential.com
12.42.50.49	A	ny-mailgate2.prudential.com
12.42.50.50	A+PTR	mailgate2.prusec.com
12.42.50.50	A+PTR	ny-mailgate1.prusec.com
12.42.50.50	A+PTR	pa-mailgate1.prusec.com
12.42.50.51	A+PTR	paehowgateway2.prudential.com
12.42.50.52	A+PTR	paehowgateway1.prudential.com
12.42.50.60	A+PTR	paehowed01.prudential.com
12.42.50.60	A	ns1.prudential.com
12.42.50.119	A	szkcj.com
12.42.50.139	A	piassistant.prudential.com
12.42.50.144	A	reloplus.prudential.com
12.42.50.149	PTR	pqa-nypzweb3.prudential.com
12.42.50.149	A+PTR	pqa.prudential.com
12.42.50.153	A	strategist-ny.prumerica.net
12.42.50.159	A+PTR	access.prudentialbache.com
12.42.50.161	A	externalftp.prusec.com
12.42.50.163	PTR	pf-global.com
12.42.50.163	A+PTR	prudential-bache.com
12.42.50.168	A+PTR	demo-relocation.prudential.com
12.42.50.169	A+PTR	homeconnections.prudential.com
12.42.50.172	A	ofxmonitor.prudential.com
12.42.50.174	A	sales.prudential.com
12.42.50.176	A+PTR	pa-mailgate2.prudential.com
12.42.50.177	A+PTR	pa-smtp.prudential.com
12.42.50.191	A+PTR	pfol1.prusec.com
12.42.50.203	A+PTR	dmzdbnj.prufn.com
12.42.50.203	A+PTR	dmzdbny.prufn.com
12.42.50.205	A	esmrap.prudential.com
12.42.50.207	A	client.prusec.com
12.42.50.216	A	fix.prusec.com
12.42.50.218	PTR	pbm-nypzweb3.prudential.com
12.42.50.218	A+PTR	pbm.prudential.com
12.42.50.218	A	jwalk.prudential.com
12.42.50.219	A	sct.prudential.com