Robtex

Up: 192.47.170.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.47.170.0/25
Down right: 192.47.170.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.47.170.1	A+PTR	ote-gw.jp.ntt.net
192.47.170.4	PTR	loopback.jp.ntt.net
192.47.170.6	PTR	loopback.jp.ntt.net
192.47.170.24	PTR	24.jp.ntt.net
192.47.170.27	PTR	27.jp.ntt.net
192.47.170.28	PTR	28.jp.ntt.net
192.47.170.29	PTR	29.jp.ntt.net
192.47.170.34	A+PTR	ns.jp.ntt.net
192.47.170.34	A	mailhost.jp.ntt.net
192.47.170.34	A	ns.hasebe.info
192.47.170.35	A+PTR	ns2.jp.ntt.net
192.47.170.35	A	jp.ntt.net
192.47.170.35	A	ns2.hasebe.info
192.47.170.36	PTR	36.jp.ntt.net
192.47.170.41	PTR	41.jp.ntt.net
192.47.170.67	A+PTR	maher.jp.ntt.net
192.47.170.68	A+PTR	noel.jp.ntt.net
192.47.170.71	A+PTR	oshinko.jp.ntt.net
192.47.170.72	PTR	asobi.jp.ntt.net
192.47.170.72	A	ntt97.net
192.47.170.72	A	mailhost.ntt97.net
192.47.170.73	A+PTR	v6.jp.ntt.net
192.47.170.75	PTR	asobi2.jp.ntt.net
192.47.170.75	A	miya.org
192.47.170.81	A+PTR	umai.jp.ntt.net
192.47.170.83	A	ote-rta50i.jp.ntt.net
192.47.170.84	A+PTR	st-84.jp.ntt.net
192.47.170.86	A+PTR	st-86.jp.ntt.net
192.47.170.88	A+PTR	st-88.jp.ntt.net
192.47.170.90	A+PTR	st-90.jp.ntt.net
192.47.170.93	A+PTR	st-93.jp.ntt.net
192.47.170.94	A	st-94.jp.ntt.net
192.47.170.98	A	dhcp-98.jp.ntt.net
192.47.170.102	A	dhcp-102.jp.ntt.net
192.47.170.108	A+PTR	dhcp-108.jp.ntt.net
192.47.170.109	A+PTR	dhcp-109.jp.ntt.net
192.47.170.110	A	dhcp-110.jp.ntt.net
192.47.170.111	A	dhcp-111.jp.ntt.net
192.47.170.114	A	dhcp-114.jp.ntt.net
192.47.170.116	A	dhcp-116.jp.ntt.net
192.47.170.118	A+PTR	dhcp-118.jp.ntt.net
192.47.170.129	PTR	129.jp.ntt.net
192.47.170.131	PTR	131.jp.ntt.net
192.47.170.132	PTR	132.jp.ntt.net
192.47.170.134	PTR	134.jp.ntt.net
192.47.170.137	PTR	137.jp.ntt.net
192.47.170.226	A	dhcp-226.jp.ntt.net
192.47.170.238	A	dhcp-238.jp.ntt.net
192.47.170.239	A	dhcp-239.jp.ntt.net