Robtex

Up: 199.27.144.0/21
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Down left: 199.27.144.0/23
Down right: 199.27.146.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.27.144.4	A	vpntest.useractive.com
199.27.144.10	A	vpn.useractive.com
199.27.144.51	A	vpn.oreilly.com
199.27.144.59	A	www.learningwebdesign.com
199.27.144.74	A	cold.useractive.com
199.27.144.75	A+PTR	tepid.useractive.com
199.27.144.81	A	hottub3.useractive.com
199.27.144.82	A	hottub4.useractive.com
199.27.144.83	A	hottub.useractive.com
199.27.144.84	A	hottub2.useractive.com
199.27.144.85	A	hottub5.useractive.com
199.27.144.89	PTR	www.oreillyschool.com
199.27.144.89	A	makemath.com
199.27.144.89	A	makemathematics.com
199.27.144.95	A	ham1.useractive.com
199.27.144.101	A+PTR	cold1.useractive.com
199.27.144.104	PTR	oriole-prod2.oreilly.com
199.27.144.180	A	sink0.useractive.com
199.27.144.181	A	sink1.useractive.com
199.27.144.182	A	sink.useractive.com
199.27.144.186	A	fluentcon.com
199.27.144.186	A	www.oscon.com
199.27.144.186	A	androidopen.com
199.27.144.187	A	fluentcon.com
199.27.144.187	A	www.oscon.com
199.27.144.187	A	androidopen.com
199.27.144.188	A	nat-146-188.oreilly.com
199.27.144.188	A	assets.conferences.oreilly.com
199.27.144.189	A	assets.conferences.oreilly.com
199.27.144.240	A	esb.oreilly.com
199.27.144.241	A	esb.oreilly.com
199.27.145.51	A	ftp.oreilly.com
199.27.145.52	A	ftp.oreilly.co.jp
199.27.145.64	A	expectnation.com
199.27.145.64	A	oreillyanimals.com
199.27.145.64	A	missingmanual.com
199.27.145.65	A	expectnation.com
199.27.145.65	A	oreillyanimals.com
199.27.145.65	A	missingmanual.com
199.27.145.70	A	members.oreilly.com
199.27.145.71	A	members.oreilly.com
199.27.145.72	A	covers.oreilly.com
199.27.145.73	A	covers.oreilly.com
199.27.145.74	A	assets.oreilly.com
199.27.145.75	A	assets.oreilly.com
199.27.145.76	A	orioledemo.com
199.27.145.77	A	orioledemo.com
199.27.145.78	A+PTR	app.oreilly.com
199.27.145.79	A+PTR	app.oreilly.com
199.27.145.123	A	nsdb1.oreilly.com
199.27.146.72	PTR	vs2010.oreillyschool.com
199.27.146.72	A	pdu.useractive.com
199.27.146.80	A	server80.useractive.com
199.27.147.68	A+PTR	nano.oreillyschool.com
199.27.147.89	A	courses.oreillyschool.com
199.27.147.89	A	makingmath.com
199.27.147.89	A	blog.oreillyschool.com
199.27.147.104	A+PTR	tap-dev.oreillyschool.com
199.27.147.109	A+PTR	ellipse.oreillyschool.com
199.27.147.111	A	tap0.oreillyschool.com
199.27.147.116	A+PTR	tap.oreillyschool.com
199.27.147.117	A	jira.oreillyschool.com
199.27.147.171	A	lime.useractive.com