Robtex

Up: 125.6.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 125.6.24.0/23
Down right: 125.6.26.0/23

IP	Type	Hostname
125.6.24.161	PTR	125-6-24-161.lw.livedoor.net
125.6.25.52	PTR	125-6-25-52.lw.livedoor.net
125.6.27.4	PTR	125-6-27-4.lw.livedoor.net
125.6.27.19	PTR	125-6-27-19.lw.livedoor.net
125.6.27.141	PTR	125-6-27-141.lw.livedoor.net
125.6.27.156	PTR	125-6-27-156.lw.livedoor.net
125.6.27.176	PTR	125-6-27-176.lw.livedoor.net
125.6.27.179	PTR	125-6-27-179.lw.livedoor.net
125.6.27.241	PTR	125-6-27-241.lw.livedoor.net