Robtex

Up: 162.208.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 162.208.21.0/25
Down right: 162.208.21.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
162.208.21.4	A	cr1.iad2.btrll.net
162.208.21.5	A	lo0-0.cr2.iad2.btrll.net
162.208.21.5	A	cr2.iad2.btrll.net
162.208.21.17	A	101.c.iad2.btrll.net
162.208.21.29	A	cserv-um-v01-21b.iad3.btrll.com
162.208.21.162	A	vast.bp3851558.btrll.com
162.208.21.162	A	2895.btrll.com
162.208.21.162	A	vast.bp3848250.btrll.com
162.208.21.163	PTR	unknown-162-208-21-x.yahoo.com
162.208.21.163	A	crtbserv-21.btrll.com
162.208.21.163	A	brxserv.btrll.com
162.208.21.166	A	seg.bs6543253.btrll.com
162.208.21.166	A	seg.bs6543313.btrll.com
162.208.21.166	A	segserv-21.btrll.com
162.208.21.167	A	mhext-21.btrll.com
162.208.21.168	A	cservp-21.btrll.com
162.208.21.172	PTR	unknown.yahoo.com
162.208.21.172	A	errsrv-v2.btrll.com
162.208.21.176	A	xe-0-0-0-0.cr1.iad2.btrll.net
162.208.21.178	A+PTR	xe-0-0-1-0.cr1.iad2.btrll.net
162.208.21.179	A+PTR	xe-0-1-0-0.ar103.iad2.btrll.net
162.208.21.180	A	xe-0-0-2-0.cr1.iad2.btrll.net
162.208.21.182	A	xe-0-0-3-0.cr1.iad2.btrll.net
162.208.21.193	A	1537.xs.iad3.btrll.net
162.208.21.208	A	xe-0-0-0-0.cr2.iad2.btrll.net
162.208.21.210	A	xe-0-0-1-0.cr2.iad2.btrll.net
162.208.21.222	PTR	1537.xs1.iad3.btrll.net
162.208.21.222	PTR	xe-0-0-7-0.cr2.iad2.btrll.net
162.208.21.242	A	vast.bp3859444.btrll.com
162.208.21.242	A	vast.bp3867439.btrll.com
162.208.21.242	A	vast.bp3857501.btrll.com
162.208.21.243	A	vast.bp3858284.btrll.com
162.208.21.243	A	vast.bp3858667.btrll.com
162.208.21.243	A	vast.bp3858164.btrll.com