Robtex

Up: 13.13.56.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 13.13.57.0/25
Down right: 13.13.57.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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	A+PTR	acevip-13-13-57-35.epn.useastgw.xerox.com
13.13.57.35	A	consultants.idns-ext.xerox.com
13.13.57.36	A+PTR	acevip-13-13-57-36.epn.useastgw.xerox.com
13.13.57.36	A	office.xerox.com
13.13.57.36	A	www-office.idns-ext.xerox.com
13.13.57.37	A+PTR	acevip-13-13-57-37.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	A+PTR	acevip-13-13-57-49.epn.useastgw.xerox.com
13.13.57.49	A	xeroxdirect.ca
13.13.57.52	A+PTR	acevip-13-13-57-52.epn.useastgw.xerox.com
13.13.57.52	A	xerox-displays.com
13.13.57.54	PTR	acevip-13-13-57-54.epn.useastgw.xerox.com
13.13.57.54	A	xeroxclub.hu
13.13.57.55	A+PTR	acevip-13-13-57-55.epn.useastgw.xerox.com
13.13.57.55	A	partnernet.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
13.13.57.60	A	wss.idns-ext.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