Robtex

Up: 209.124.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 209.124.0.0/21
Down right: 209.124.8.0/21

IP	Type	Hostname
209.124.1.2	A	io.clark.net
209.124.5.11	PTR	w11.fas.org
209.124.5.13	PTR	w13.fas.org
209.124.5.16	PTR	w16.fas.org
209.124.5.17	PTR	w17.fas.org
209.124.5.129	A	mb.usccb.org
209.124.5.133	A+PTR	cnseast.catholicnews.com
209.124.5.133	A+PTR	www2.catholicnews.com
209.124.5.135	A	origins.catholicnews.com
209.124.14.11	A	portal1.saic-isg.com