Robtex

Up: 165.112.4.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 165.112.6.0/24
Down right: 165.112.7.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
165.112.6.3	A+PTR	gslb02.nlm.nih.gov
165.112.7.10	PTR	ftp.st-va.ncbi.nlm.nih.gov
165.112.7.19	A+PTR	pubmedgov-vip.st-va.ncbi.nlm.nih.gov
165.112.7.19	A	pubmedgov.wip.ncbi.nlm.nih.gov
165.112.7.20	A+PTR	www-vip.st-va.ncbi.nlm.nih.gov
165.112.7.20	A	www.st-va.ncbi.nlm.nih.gov
165.112.7.20	A	eutils.ncbi.nlm.nih.gov
165.112.7.21	PTR	blast-vip.st-va.ncbi.nlm.nih.gov
165.112.7.38	PTR	blastintprod32.st-va.ncbi.nlm.nih.gov