Robtex

Up: 206.251.252.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 206.251.252.0/24
Down right: 206.251.253.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
206.251.252.4	A	darkstar.adnc.com
206.251.252.10	A+PTR	beta.adnc.com
206.251.252.11	A+PTR	gamma.adnc.com
206.251.252.16	A	epsilon.adnc.com
206.251.252.17	A	monitor.adnc.com
206.251.252.18	A	zeta.adnc.com
206.251.252.19	PTR	eta.adnc.net
206.251.252.21	A	theta.adnc.com
206.251.252.24	A+PTR	theautomatedsystem.com
206.251.252.24	A	tas.adnc.net
206.251.252.25	A	tas.americanis.net
206.251.252.28	A+PTR	mailq.americanis.net
206.251.252.28	A	mailq.adnc.com
206.251.252.29	A	webtrends.adnc.com
206.251.252.32	A	fadc.americanis.net
206.251.252.32	A	twoworldtravelers.com
206.251.252.32	A	guzelimiantree.com
206.251.252.35	A+PTR	rwhois.americanis.net
206.251.252.35	A	rwhois.complexdrive.com
206.251.252.36	PTR	hrd.frostwolf.net
206.251.252.36	A	www.ikite.com
206.251.252.40	PTR	newlog.americanis.net
206.251.252.41	A	iishost.americanis.net
206.251.252.61	A	nugget.adnc.com
206.251.252.62	A	rogue.adnc.com
206.251.252.69	A	rockenpaintball.net
206.251.252.69	A	myrockenpaintball.com
206.251.252.69	A	rockenfactory.com
206.251.252.100	PTR	gnudefiant.americanis.net
206.251.252.150	A	webmail.americanis.net
206.251.252.150	A	defiant.americanis.net
206.251.252.219	A	sql.theautomatedsystem.com
206.251.252.222	PTR	americanis.net
206.251.252.222	A	americaninternetservices.com
206.251.253.15	A+PTR	smtp.americanis.net