Robtex

Up: 209.40.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 209.40.80.0/23
Down right: 209.40.82.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.40.80.2	PTR	gzone03.cca.edu
209.40.80.5	PTR	zone-rt.cca.edu
209.40.80.21	A+PTR	library-old.cca.edu
209.40.80.22	A+PTR	zone-dns-02.cca.edu
209.40.80.22	PTR	nameserver1.ccac-art.edu
209.40.80.22	PTR	nameserver2.cca.edu
209.40.80.23	PTR	ccarts.edu
209.40.80.131	A+PTR	zone-samba-01.cca.edu
209.40.80.202	A	zone-bacula-01.cca.edu
209.40.80.205	A	zone-directoryweb-01.cca.edu
209.40.80.215	A	zone-syslog-02.cca.edu
209.40.80.234	A+PTR	sb5202-oak-01.cca.edu
209.40.81.3	A	cca-oak-gw.cca.edu
209.40.81.242	A+PTR	cca-oak-gw-81-242.cca.edu
209.40.81.245	A+PTR	cca-oak-gw-81-245.cca.edu
209.40.81.246	PTR	cca-oak-gw-81-246.cca.edu
209.40.81.248	A	cca-oak-gw-81-248.cca.edu
209.40.81.250	A	cca-oak-gw-81-250.cca.edu
209.40.81.253	A	cca-oak-gw-81-253.cca.edu
209.40.81.254	A+PTR	cca-oak-gw-81-254.cca.edu
209.40.82.2	A+PTR	oak-rs-mdf-sw-05.net.cca.edu