Robtex

Up: 199.26.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 199.26.8.0/22
Down right: 199.26.12.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.26.10.98	A+PTR	mac.yorktech.com
199.26.10.98	A+PTR	ms-01.mac.yorktech.com
199.26.11.10	A+PTR	clabs.yorktech.com
199.26.11.10	PTR	cs-03.clabs.yorktech.com
199.26.11.17	PTR	clabdc01.clabs.yorktech.com
199.26.11.17	PTR	netlab.clabs.yorktech.com
199.26.11.18	A+PTR	clabdc02.clabs.yorktech.com
199.26.14.4	A+PTR	googlebox.yorktech.com
199.26.14.201	A+PTR	dns2.yorktech.com
199.26.14.201	A	dns2.yorktech.edu
199.26.15.3	A+PTR	vpn01.yorktech.edu
199.26.15.201	A+PTR	dns1.yorktech.com
199.26.15.201	A+PTR	ytcedudns.yorktech.edu
199.26.15.201	A	dns1.yorktech.edu
199.26.15.203	A+PTR	webadvisor3.yorktech.com
199.26.15.205	PTR	etc.yorktech.com
199.26.15.208	PTR	www.hivebc.com
199.26.15.208	A	mercury.yorktech.com
199.26.15.210	A+PTR	cuda.yorktech.com
199.26.15.210	A+PTR	cuda.yorktech.edu
199.26.15.211	A+PTR	quarantine.yorktech.com
199.26.15.217	A+PTR	yorktech.edu
199.26.15.217	PTR	venus.yorktech.com
199.26.15.217	A+PTR	venus.yorktech.edu
199.26.15.220	PTR	smtp.yorktech.com
199.26.15.220	PTR	smtp.yorktech.edu
199.26.15.230	A	test.yorktech.edu