Robtex

Up: 138.19.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 138.19.136.0/23
Down right: 138.19.138.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
138.19.136.65	A+PTR	138019136065.ctinets.com
138.19.136.65	A	1manphoto.com
138.19.136.188	A+PTR	138019136188.ctinets.com
138.19.137.40	A+PTR	138019137040.ctinets.com
138.19.137.196	A	dns1.macmac.info
138.19.137.243	A+PTR	138019137243.ctinets.com
138.19.139.57	A+PTR	138019139057.ctinets.com
138.19.139.57	A	kite.hk
138.19.139.118	PTR	138019139118.ctinets.com
138.19.139.246	A+PTR	138019139246.ctinets.com
138.19.139.246	A	mail.nu-o.com
138.19.139.246	A	www.nu-o.com