Robtex

Up: 158.120.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 158.120.0.0/23
Down right: 158.120.2.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
158.120.0.0	PTR	158-120-0-0.dia.static.springsgov.com
158.120.0.1	PTR	158-120-0-1.dia.static.springsgov.com
158.120.0.14	PTR	158-120-0-14.dia.static.springsgov.com
158.120.0.17	PTR	158-120-0-17.dia.static.springsgov.com
158.120.0.20	PTR	158-120-0-20.dia.static.springsgov.com
158.120.0.20	A	ci.colospgs.co.us
158.120.0.29	PTR	158-120-0-29.dia.static.springsgov.com
158.120.0.30	PTR	158-120-0-30.dia.static.springsgov.com
158.120.0.30	A	springstraffic.info
158.120.0.38	PTR	158-120-0-38.dia.static.springsgov.com
158.120.0.38	A	mail1.coloradosprings.gov
158.120.0.39	PTR	158-120-0-39.dia.static.springsgov.com
158.120.0.39	A	mail2.coloradosprings.gov
158.120.0.40	A+PTR	smtp2.ci.colospgs.co.us
158.120.0.40	A	smtp1.springsgov.com
158.120.0.41	A+PTR	smtp1.ci.colospgs.co.us
158.120.0.41	A	smtp2.springsgov.com
158.120.0.43	PTR	webmail.springsgov.com
158.120.0.71	PTR	158-120-0-71.dia.static.springsgov.com
158.120.0.71	A	ci.colospgs.co.us
158.120.0.71	A	springsgov.com
158.120.0.74	PTR	158-120-0-74.dia.static.springsgov.com
158.120.0.74	A	websvc.coloradosprings.gov
158.120.0.74	A	citydocs.coloradosprings.gov