Robtex

Up: 49.100.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 49.101.0.0/17
Down right: 49.101.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
49.101.66.36	A	mailx.mopera.net
49.101.66.37	A	mailx.mopera.net
49.101.66.40	A	mailx.mopera.net
49.101.66.41	A	mailx.mopera.net
49.101.67.1	A	mailx.mopera.net
49.101.67.2	A	mailx.mopera.net
49.101.67.8	A	mailx.mopera.net
49.101.67.9	A	mailx.mopera.net
49.101.67.16	A	mailx.mopera.net
49.101.67.17	A	mailx.mopera.net
49.101.129.67	PTR	u629067.xgsfm33.imtp.tachikawa.mopera.net
49.101.130.74	A+PTR	mo49-101-130-74.air.mopera.net
49.101.132.109	A+PTR	u632109.xgsfm33.imtp.tachikawa.mopera.net
49.101.153.239	PTR	mo49-101-153-239.air.mopera.net
49.101.153.239	A	deploy1mo.net
49.101.160.161	A	ns2.ns6.greystoneexpress.com
49.101.160.161	A	ns6.ns1.greystoneexpress.com
49.101.160.161	A	ns4.ns5.greystoneexpress.com
49.101.164.46	A+PTR	mo49-101-164-46.air.mopera.net
49.101.167.150	PTR	mo49-101-167-150.air.mopera.net
49.101.174.0	PTR	mo49-101-174-0.air.mopera.net
49.101.177.103	A+PTR	mo49-101-177-103.air.mopera.net
49.101.177.103	A	u677103.xgsfm37.imtp.tachikawa.mopera.net
49.101.179.129	PTR	u679129.xgsfm37.imtp.tachikawa.mopera.net
49.101.182.96	PTR	u682096.xgsfm38.imtp.tachikawa.mopera.net
49.101.187.219	A+PTR	u687219.xgsfm38.imtp.tachikawa.mopera.net
49.101.188.121	A	iss-beta.mydns.jp
49.101.194.144	PTR	mo49-101-194-144.air.mopera.net
49.101.229.144	A+PTR	mo49-101-229-144.air.mopera.net
49.101.241.124	A	iss-beta.mydns.jp
49.101.244.11	A+PTR	mo49-101-244-11.air.mopera.net
49.101.254.39	PTR	u754039.xgsfm6.imtp.tachikawa.mopera.net