Robtex

Up: 162.208.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 162.208.20.0/25
Down right: 162.208.20.128/25
(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	crtbserv-20.btrll.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	A+PTR	cservp-20.btrll.com
162.208.20.181	A+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	A+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