Robtex

Up: 61.47.104.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 61.47.104.0/23
Down right: 61.47.106.0/23

IP	Type	Hostname
61.47.104.255	PTR	255.104.47.61.static.pacific.net.th
61.47.105.106	PTR	106.105.47.61.static.pacific.net.th
61.47.105.107	PTR	107.105.47.61.static.pacific.net.th
61.47.105.255	PTR	255.105.47.61.static.pacific.net.th
61.47.106.255	PTR	255.106.47.61.static.pacific.net.th
61.47.107.255	PTR	255.107.47.61.static.pacific.net.th