Robtex

Up: 209.52.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 209.52.0.0/20
Down right: 209.52.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.52.0.0	PTR	c209.52.0-0.clta.globetrotter.net
209.52.0.2	PTR	c209.52.0-2.clta.globetrotter.net
209.52.0.67	PTR	c209.52.0-67.clta.globetrotter.net
209.52.0.194	PTR	c209.52.0-194.clta.globetrotter.net
209.52.1.0	PTR	c209.52.1-0.clta.globetrotter.net
209.52.1.33	PTR	c209.52.1-33.clta.globetrotter.net
209.52.1.35	PTR	c209.52.1-35.clta.globetrotter.net
209.52.1.64	PTR	c209.52.1-64.clta.globetrotter.net
209.52.1.192	PTR	c209.52.1-192.clta.globetrotter.net
209.52.1.194	PTR	c209.52.1-194.clta.globetrotter.net
209.52.2.2	PTR	c209.52.2-2.clta.globetrotter.net
209.52.2.128	PTR	c209.52.2-128.clta.globetrotter.net
209.52.10.1	PTR	c209.52.10-1.clta.globetrotter.net
209.52.13.16	A	museworks.com
209.52.14.66	A	jenningsandassociates.com
209.52.15.32	PTR	c209.52.15-32.clta.globetrotter.net
209.52.17.64	PTR	c209.52.17-64.clta.globetrotter.net
209.52.23.33	PTR	c209.52.23-33.clta.globetrotter.net
209.52.23.128	PTR	c209.52.23-128.clta.globetrotter.net
209.52.23.128	A	chateauvert.org
209.52.23.195	PTR	c209.52.23-195.clta.globetrotter.net
209.52.25.1	PTR	c209.52.25-1.clta.globetrotter.net
209.52.25.1	A	carousel.ca
209.52.25.1	A	visram.ca
209.52.25.253	A	antarctic.smartt.com
209.52.26.100	A	indian.smartt.com
209.52.26.204	A	dusevic.com
209.52.28.33	PTR	c209.52.28-33.clta.globetrotter.net
209.52.28.66	PTR	c209.52.28-66.clta.globetrotter.net
209.52.30.3	PTR	c209.52.30-3.clta.globetrotter.net
209.52.30.193	PTR	c209.52.30-193.clta.globetrotter.net