Robtex

Up: 203.241.128.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.241.128.0/23
Down right: 203.241.130.0/23

IP	Type	Hostname
203.241.128.2	PTR	dogsuri.hoseo.ac.kr
203.241.128.7	PTR	office.hoseo.ac.kr
203.241.129.2	PTR	dogsuri.hoseo.ac.kr
203.241.129.7	PTR	office.hoseo.ac.kr
203.241.129.47	A	riet.hoseo.ac.kr
203.241.129.62	PTR	mail.hoseo.edu
203.241.130.2	PTR	dogsuri.hoseo.ac.kr
203.241.130.7	PTR	office.hoseo.ac.kr
203.241.130.37	A	sanan.hoseo.ac.kr
203.241.130.46	A	syslab.hoseo.ac.kr
203.241.130.48	A	iguana.hoseo.ac.kr
203.241.130.50	A	servo.hoseo.ac.kr
203.241.130.54	A	warp.hoseo.ac.kr
203.241.130.62	PTR	mail.hoseo.edu
203.241.130.77	A	cec.hoseo.ac.kr
203.241.130.78	A	msad.hoseo.ac.kr
203.241.130.79	A	vertex.hoseo.ac.kr
203.241.130.80	A	jungtong.hoseo.ac.kr
203.241.130.91	A	asic.hoseo.ac.kr
203.241.130.92	A	scd.hoseo.ac.kr
203.241.130.93	A	scorpio.hoseo.ac.kr
203.241.130.96	A	vlsi.hoseo.ac.kr
203.241.130.99	A	ssl.hoseo.ac.kr
203.241.130.104	A	multi.hoseo.ac.kr
203.241.130.108	A	emsn.hoseo.ac.kr
203.241.130.111	A	ultra.hoseo.ac.kr
203.241.130.119	A	microwave.hoseo.ac.kr
203.241.130.121	A	vcl.hoseo.ac.kr
203.241.130.125	A	emlab.hoseo.ac.kr
203.241.130.130	A	inforcom.hoseo.ac.kr
203.241.130.131	A	telecom.hoseo.ac.kr
203.241.130.137	A	system.hoseo.ac.kr
203.241.130.165	A	ansys.hoseo.ac.kr
203.241.130.169	A	wpk.hoseo.ac.kr
203.241.130.179	A	risa.hoseo.ac.kr
203.241.130.211	A	mmic.hoseo.ac.kr
203.241.130.212	A	idec.hoseo.ac.kr
203.241.130.213	A	chips.hoseo.ac.kr
203.241.130.214	A	chips1.hoseo.ac.kr
203.241.130.222	A	ulsi.hoseo.ac.kr
203.241.130.241	A	tain.hoseo.ac.kr
203.241.131.2	PTR	dogsuri.hoseo.ac.kr
203.241.131.7	PTR	office.hoseo.ac.kr
203.241.131.62	PTR	mail.hoseo.edu