Robtex

Up: 199.87.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 199.87.16.0/22
Down right: 199.87.20.0/22

IP	Type	Hostname
199.87.21.69	PTR	ns1.ci.birmingham.al.us
199.87.21.69	A	ns1.birmingham.al.us
199.87.21.72	PTR	birminghamal.gov
199.87.21.73	PTR	ns2.ci.birmingham.al.us
199.87.21.73	A	ns2.birmingham.al.us
199.87.21.88	A	vmx5.birminghamal.gov
199.87.21.89	PTR	vmx4.ci.birmingham.al.us
199.87.21.89	A	vmx4.birminghamal.gov
199.87.21.91	A+PTR	vmx7.birminghamal.gov
199.87.21.91	A	vmx7.ci.birmingham.al.us
199.87.21.96	A+PTR	cobmail.birminghamal.gov
199.87.21.99	A	www.birminghamal.gov
199.87.21.99	A	birminghamal.gov
199.87.21.99	A	informationbirmingham.com
199.87.21.100	PTR	otfa.birminghamal.gov