Robtex

Up: 13.13.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 13.13.56.0/22
Down right: 13.13.60.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.13.56.38	A+PTR	usa0300rwp3-ext.epn.useastgw.xerox.com
13.13.56.119	A+PTR	f5-virtual-ip-13-13-56-119.epn.useastgw.xerox.com
13.13.56.126	A+PTR	usa0300xmg001-ext.epn.useastgw.xerox.com
13.13.56.126	A	remserv00.support.xerox.com
13.13.56.126	A	layer7-prod.idns.xerox.com
13.13.56.127	A+PTR	usa0300xmg002-ext.epn.useastgw.xerox.com
13.13.56.127	A	layer7-prod.idns.xerox.com
13.13.57.32	PTR	testnic.external.xerox.com
13.13.57.32	A	acs-inc.com
13.13.57.32	A	vadersystems.com
13.13.57.35	PTR	acevip-13-13-57-35.epn.useastgw.xerox.com
13.13.57.40	A+PTR	acevip-13-13-57-40.epn.useastgw.xerox.com
13.13.57.40	A	www.consulting.xerox.com
13.13.57.41	PTR	acevip-13-13-57-41.epn.useastgw.xerox.com
13.13.57.43	PTR	acevip-13-13-57-43.epn.useastgw.xerox.com
13.13.57.43	A	xdss.com
13.13.57.43	A	buy.xerox.com
13.13.57.48	A+PTR	acevip-13-13-57-48.epn.useastgw.xerox.com
13.13.57.48	A	xrx.sm
13.13.57.48	A	www.xerox.es
13.13.57.49	PTR	acevip-13-13-57-49.epn.useastgw.xerox.com
13.13.57.57	A+PTR	acevip-13-13-57-57.epn.useastgw.xerox.com
13.13.57.57	A	services.xerox.com
13.13.57.60	A	kmui.idns-ext.xerox.com
13.13.57.60	A	wss.support.xerox.com
13.13.57.84	A+PTR	dmo-test.partnernet.xerox.com
13.13.57.120	A+PTR	css-vip-13-13-57-120.epn.useastgw.xerox.com
13.13.57.120	A	s3forms-useast.idns.xerox.com
13.13.57.120	A	www.s3.external.xerox.com
13.13.57.123	PTR	cssvip-13-13-57-123.epn.useastgw.xerox.com
13.13.57.173	PTR	cssvip-13-13-57-173.epn.useastgw.xerox.com
13.13.59.15	PTR	www2.accounts.xerox.com
13.13.59.40	PTR	0300rwp-vip-13-13-59-40.epn.useastgw.xerox.com
13.13.59.58	PTR	0300rwp-vip-13-13-59-58.epn.useastgw.xerox.com
13.13.59.72	PTR	0300rwp-vip-13-13-59-72.epn.useastgw.xerox.com
13.13.59.129	A+PTR	xog-13-13-59-129.epn.useastgw.xerox.com
13.13.59.142	A	xog-13-13-59-142.epn.useastgw.xerox.com
13.13.59.157	A	xog-13-13-59-157.epn.useastgw.xerox.com
13.13.59.158	A	xog-13-13-59-158.epn.useastgw.xerox.com
13.13.59.167	A	xog-13-13-59-167.epn.useastgw.xerox.com
13.13.59.170	A+PTR	xog-13-13-59-170.epn.useastgw.xerox.com
13.13.59.171	A+PTR	xog-13-13-59-171.epn.useastgw.xerox.com
13.13.59.173	A	xog-13-13-59-173.epn.useastgw.xerox.com
13.13.59.178	A+PTR	xog-13-13-59-178.epn.useastgw.xerox.com
13.13.63.6	A	0300rwp-vip-13-13-63-6.epn.useastgw.xerox.com
13.13.63.6	A	rp-webboard.idns.xerox.com
13.13.63.8	PTR	0300rwp-vip-13-13-63-8.epn.useastgw.xerox.com
13.13.63.8	A	rp-meridian.idns.xerox.com