Robtex

Up: 165.112.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 165.112.228.0/23
Down right: 165.112.230.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
165.112.228.26	A+PTR	ecb.nih.gov
165.112.228.40	A+PTR	exporter.nih.gov
165.112.228.40	PTR	federalreporter.nih.gov
165.112.228.40	A+PTR	projectreporter.nih.gov
165.112.228.63	A+PTR	apps.era.nih.gov
165.112.228.73	A+PTR	era.nih.gov
165.112.228.90	A	m.era.nih.gov
165.112.228.105	A+PTR	visualize.projectreporter.nih.gov
165.112.228.186	A+PTR	fallback.era.nih.gov
165.112.228.197	A	exporter.nih.gov
165.112.228.212	A+PTR	commons-vhost.era.nih.gov
165.112.228.212	A+PTR	commons.era.nih.gov
165.112.228.215	PTR	edison.gov
165.112.228.215	A+PTR	iedison.gov
165.112.228.215	A+PTR	s-edison.info.nih.gov
165.112.228.238	A+PTR	public.dev.era.nih.gov
165.112.228.239	A+PTR	public.test.era.nih.gov
165.112.228.242	A+PTR	public.era.nih.gov
165.112.230.29	A+PTR	inport.nih.gov