Robtex

Up: 138.19.138.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 138.19.139.0/25
Down right: 138.19.139.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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