Robtex

Up: 138.242.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 138.243.0.0/17
Down right: 138.243.128.0/17

IP	Type	Hostname
138.243.40.26	A+PTR	relay12.noc.n-bone.net
138.243.40.32	A+PTR	relay14.noc.n-bone.net
138.243.41.15	A+PTR	tcc.mcst.n-bone.net
138.243.50.26	A+PTR	mail16.noc.n-bone.net
138.243.51.158	A+PTR	relay2.noc.n-bone.net
138.243.51.164	A+PTR	relay4.noc.n-bone.net
138.243.56.19	A+PTR	ns1.noc.n-bone.net
138.243.56.25	A+PTR	ns1-gw.noc.n-bone.net
138.243.56.35	A	ns2.noc.n-bone.net
138.243.56.39	A	ns2-gw.noc.n-bone.net
138.243.60.93	A	hlc.mcst.n-bone.net
138.243.60.95	A	osc.mcst.n-bone.net
138.243.60.198	A	mail.demo.bna-net.jp
138.243.60.200	A	wmail.noc.n-bone.net
138.243.61.32	A+PTR	gdz.mcst.n-bone.net
138.243.61.34	A+PTR	sjz.mcst.n-bone.net
138.243.61.44	A+PTR	fomx.mcst.n-bone.net
138.243.61.47	A+PTR	knmx.mcst.n-bone.net
138.243.88.84	A+PTR	nmail.noc.n-bone.net
138.243.98.131	A	mail.serva-news.de
138.243.138.13	A	ns1.raphicmizban.ir
138.243.138.13	A	ns2.raphicmizban.ir
138.243.142.188	A	mail.*.dns.mail.6.umikl.com
138.243.154.160	A+PTR	p4.cst.n-bone.net
138.243.200.64	PTR	e1.mwjp.jp
138.243.210.2	A	srv-check.secure-ict.net
138.243.210.2	A	www.bna-net.jp
138.243.210.2	A	hobbit.secure-ict.net
138.243.210.3	PTR	ns03.secure-ict.net
138.243.210.3	A	ns03.broadnetassist.com
138.243.217.35	PTR	p013.bc.secure-ict.net
138.243.217.37	PTR	p014.bc.secure-ict.net
138.243.217.40	A	p019.bc.secure-ict.net
138.243.217.46	A	p021.bc.secure-ict.net
138.243.217.232	A	fw.beams.jp
138.243.218.1	A+PTR	bm1011.mcs.secure-ict.net
138.243.218.18	A	bizmail.secure-ict.net
138.243.218.18	A	bm1028.mcs.secure-ict.net
138.243.218.19	A	bm1029.mcs.secure-ict.net
138.243.219.252	A	bm1091.mcs.secure-ict.net
138.243.220.1	PTR	ma1029.mgw.secure-ict.net
138.243.220.3	A+PTR	ma1031.mgw.secure-ict.net
138.243.220.5	A	ssdmx.secure-ict.net
138.243.220.8	A	ma1036.mgw.secure-ict.net
138.243.220.12	A	ma1040.mgw.secure-ict.net
138.243.221.237	A+PTR	ma1091.mgw.secure-ict.net
138.243.223.19	A+PTR	ma1127.mgw.secure-ict.net
138.243.223.20	PTR	ma1128.mgw.secure-ict.net
138.243.223.22	A+PTR	ma1130.mgw.secure-ict.net
138.243.223.28	A	ma1136.mgw.secure-ict.net
138.243.223.70	A	ma1178.mgw.secure-ict.net