Robtex

Up: 199.27.144.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 199.27.145.0/25
Down right: 199.27.145.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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
199.27.145.66	A	openid.oreilly.com
199.27.145.67	A	openid.oreilly.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