Robtex

Up: 66.73.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.73.20.0/23
Down right: 66.73.22.0/23

IP	Type	Hostname
66.73.20.1	A	dist1-vlan70.bcvloh.sbcglobal.net
66.73.20.3	A	server1-gateway.bcvloh.sbcglobal.net
66.73.20.4	PTR	dnsnode6-x4.bcvloh.sbcglobal.net
66.73.20.7	A	dnsnode9-x4.bcvloh.sbcglobal.net
66.73.20.11	A	dnsnode1-x4.bcvloh.sbcglobal.net
66.73.20.20	PTR	speedtest-bcvloh.bcvloh.sbcglobal.net
66.73.20.21	A+PTR	ded1-fa0-0.bcvloh.sbcglobal.net
66.73.20.31	PTR	dnsnode3-x4.bcvloh.sbcglobal.net
66.73.20.40	PTR	dns1.bcvloh.sbcglobal.net
66.73.20.78	A	nas4-fa1-2-4.bcvloh.sbcglobal.net
66.73.20.86	A	ded1-fa0-1.bcvloh.sbcglobal.net
66.73.20.140	A	adm1-chi.bcvloh.sbcglobal.net
66.73.20.145	PTR	fw-92-gateway.bcvloh.sbcglobal.net
66.73.20.147	A	dist2-vlan90.bcvloh.sbcglobal.net
66.73.20.162	A	dist1-vlan10.bcvloh.sbcglobal.net
66.73.20.164	A	nas1-e2-4.bcvloh.sbcglobal.net
66.73.20.165	A	nas2-e2-2.bcvloh.sbcglobal.net
66.73.20.166	A+PTR	nas3-e2-4.bcvloh.sbcglobal.net
66.73.20.168	A	nas5-e1-2-2.bcvloh.sbcglobal.net
66.73.20.205	A	nas5-l0.bcvloh.sbcglobal.net
66.73.20.206	A+PTR	se5-l0.bcvloh.sbcglobal.net
66.73.20.210	A	rback1-l0.bcvloh.sbcglobal.net
66.73.20.215	A	rback3-l0.bcvloh.sbcglobal.net
66.73.20.221	PTR	fw0-loop.bcvloh.sbcglobal.net
66.73.20.226	A	dist1-vlan50.bcvloh.sbcglobal.net
66.73.21.2	A	dist1-vlan92.bcvloh.sbcglobal.net
66.73.21.3	A	dist2-vlan92.bcvloh.sbcglobal.net
66.73.21.65	A	dist1-vlan50.bcvloh.sbcglobal.net
66.73.21.66	PTR	dist2-vlan50.bcvloh.sbcglobal.net
66.73.21.131	A	dist2-vlan75.bcvloh.sbcglobal.net
66.73.21.133	A	local2-a.bcvloh.sbcglobal.net