Robtex

Up: 162.208.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 162.208.20.0/23
Down right: 162.208.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
162.208.20.0	A+PTR	lo0-0.er1.sjc1.btrll.net
162.208.20.0	PTR	lo0-0.cr1.sjc3.btrll.net
162.208.20.1	A	lo0-0.er2.sjc1.btrll.net
162.208.20.4	A	cr1.sjc2.btrll.net
162.208.20.131	A	rtbd-v02-20ao.sjc3.btrll.com
162.208.20.162	PTR	rtbd-v03-20bw.sjc3.btrll.com
162.208.20.162	A	2895.btrll.com
162.208.20.162	A	vast.bp3848250.btrll.com
162.208.20.163	PTR	unknown.yahoo.com
162.208.20.163	A	brxserv-20.btrll.com
162.208.20.166	A	seg.bs6543253.btrll.com
162.208.20.166	A	seg.bs6543313.btrll.com
162.208.20.166	A	cserv-unpaid-20.btrll.com
162.208.20.168	A	rtbdserv-20.btrll.com
162.208.20.169	A+PTR	rtas-adx-20.btrll.com
162.208.20.169	PTR	rtas-s2s-20.btrll.com
162.208.20.178	PTR	unknown-162-208-20-x.yahoo.com
162.208.20.178	A	rtas-adx-20.btrll.com
162.208.20.178	A	vast.bp3866667.btrll.com
162.208.20.180	A+PTR	unpaid-20.btrll.com
162.208.20.180	A+PTR	l3dsr-cserv-unpaid-20.sjc3.btrll.com
162.208.20.180	A	cserv-unpaid-20.btrll.com
162.208.20.181	PTR	cservp-20.btrll.com
162.208.20.181	PTR	l3dsr-cserv-paid-20.sjc3.btrll.com
162.208.20.181	PTR	convserv-20.btrll.com
162.208.20.184	PTR	unknown-162-208-20-x.yahoo.com
162.208.20.184	A	l3dsr-cserv-um-20.sjc3.btrll.com
162.208.20.184	A	vulcan-dsp.sjc3.btrll.com
162.208.20.185	A+PTR	marabunta-sjc3.btrll.com
162.208.20.185	A+PTR	vulcan-brx.sjc3.btrll.com
162.208.20.185	PTR	vulcan-20.sjc3.btrll.com
162.208.20.222	A	1537.cr2.sjc2.btrll.net
162.208.20.247	A	brxserv-20.btrll.com
162.208.20.248	A	convserv-20.btrll.com
162.208.20.250	PTR	unknown-162-208-20-x.yahoo.com
162.208.20.250	A	um-20.btrll.com
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	2895.btrll.com
162.208.21.162	A	vast.bp3848250.btrll.com
162.208.21.162	A	vast.bp3858502.btrll.com
162.208.21.163	PTR	unknown-162-208-21-x.yahoo.com
162.208.21.166	A	seg.bs6543253.btrll.com
162.208.21.166	A	seg.bs6543313.btrll.com
162.208.21.166	A	geo-errserv.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
162.208.22.34	PTR	unknown.yahoo.com
162.208.22.34	A	2895.btrll.com
162.208.22.34	A	vast.bp3848250.btrll.com
162.208.22.35	PTR	unpaid-21.btrll.com
162.208.22.35	PTR	l3dsr-cserv-unpaid-21.iad3.btrll.com
162.208.22.35	A	errserv-21.btrll.com
162.208.22.36	PTR	rtbdserv-21.btrll.com
162.208.22.36	PTR	convserv-21.btrll.com
162.208.22.36	PTR	l3dsr-cserv-paid-21.iad3.btrll.com
162.208.22.37	PTR	unknown-162-208-22-x.yahoo.com
162.208.22.39	PTR	um-21.btrll.com
162.208.22.39	PTR	l3dsr-cserv-um-21.iad3.btrll.com
162.208.22.74	PTR	cserv-um-v01-21b.iad3.btrll.com
162.208.22.87	PTR	cserv-um-v01-21c.iad3.btrll.com
162.208.23.8	A	xe-0-0-0-2.er2.sjc1.btrll.net