Robtex

Up: 203.236.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 203.236.16.0/21
Down right: 203.236.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.236.16.1	PTR	16-1.sktelecom.com
203.236.16.2	PTR	16-2.sktelecom.com
203.236.16.16	PTR	16-16.sktelecom.com
203.236.16.18	PTR	16-18.sktelecom.com
203.236.16.128	PTR	16-128.sktelecom.com
203.236.17.1	PTR	16-1.sktelecom.com
203.236.17.2	PTR	16-2.sktelecom.com
203.236.17.16	PTR	16-16.sktelecom.com
203.236.17.16	A+PTR	sktt1.net
203.236.17.16	A+PTR	sktt1.co.kr
203.236.17.18	PTR	16-18.sktelecom.com
203.236.17.40	A	membership.tworld.co.kr
203.236.17.82	PTR	16-82.sktelecom.com
203.236.17.128	PTR	16-128.sktelecom.com
203.236.17.128	A+PTR	tcard.sktmembership.co.kr
203.236.17.153	A	www.pointcam.net
203.236.17.153	A	pcddns.net
203.236.17.153	A	pointcam.net
203.236.17.155	A	pointcam.net
203.236.17.211	PTR	16-211.sktelecom.com
203.236.17.211	A	skt0.co.kr
203.236.17.211	A	www.skt0.co.kr
203.236.17.225	PTR	16-225.sktelecom.com
203.236.17.225	A	vars.co.kr
203.236.18.1	PTR	16-1.sktelecom.com
203.236.18.2	PTR	16-2.sktelecom.com
203.236.18.16	PTR	16-16.sktelecom.com
203.236.18.18	PTR	16-18.sktelecom.com
203.236.18.34	PTR	16-34.sktelecom.com
203.236.18.51	PTR	16-51.sktelecom.com
203.236.18.81	PTR	16-81.sktelecom.com
203.236.18.114	PTR	16-114.sktelecom.com
203.236.18.128	PTR	16-128.sktelecom.com
203.236.18.131	PTR	16-131.sktelecom.com
203.236.18.178	PTR	16-178.sktelecom.com
203.236.18.208	PTR	16-208.sktelecom.com
203.236.19.1	PTR	16-1.sktelecom.com
203.236.19.2	PTR	16-2.sktelecom.com
203.236.19.16	PTR	16-16.sktelecom.com
203.236.19.18	PTR	16-18.sktelecom.com
203.236.19.18	A+PTR	m.tsignature.co.kr
203.236.19.19	A	www.tsignature.co.kr
203.236.19.19	A	tsignature.co.kr
203.236.19.20	A	intr.tworld.co.kr
203.236.19.25	A	tmms.kr
203.236.19.51	PTR	16-51.sktelecom.com
203.236.19.51	A+PTR	m.shop.tworld.co.kr
203.236.19.51	A	www.tmms.kr
203.236.19.57	A	troaming.tworld.co.kr
203.236.19.70	A	mintr.tworld.co.kr
203.236.19.71	A	smartguide.tworld.co.kr
203.236.19.87	A	m.tevent.tworld.co.kr
203.236.19.90	A	m2.tworld.co.kr
203.236.19.100	A	www.011pointbox.com
203.236.19.100	A	skpointbox.com
203.236.19.100	A	www.011e-station.com
203.236.19.114	PTR	16-114.sktelecom.com
203.236.19.114	PTR	directshop.tworld.co.kr
203.236.19.114	PTR	direct.tworld.co.kr
203.236.19.128	PTR	16-128.sktelecom.com
203.236.20.11	A	gate2.sktelecom.com
203.236.20.14	A	together.tworld.co.kr
203.236.20.17	PTR	20-17.sktelecom.com
203.236.20.48	PTR	20-48.sktelecom.com
203.236.20.50	PTR	20-50.sktelecom.com
203.236.20.56	A	exedge.sktelecom.com
203.236.20.57	A	exedge.sktelecom.com
203.236.20.73	A	www.sk-symposium.com
203.236.20.73	A	sk-symposium.com
203.236.20.81	PTR	20-81.sktelecom.com
203.236.20.99	PTR	20-99.sktelecom.com
203.236.20.113	PTR	20-113.sktelecom.com
203.236.20.115	PTR	20-115.sktelecom.com
203.236.20.129	PTR	mcenter.sktelecom.com
203.236.20.134	A	m.e-station.com
203.236.20.141	A	biztworld.com
203.236.20.141	A	biztworld.co.kr
203.236.20.141	A	b2b.tworld.co.kr
203.236.20.145	PTR	20-145.sktelecom.com
203.236.20.146	PTR	20-146.sktelecom.com
203.236.20.152	A	webzone.tworld.co.kr
203.236.20.152	A	webzone.011e-station.com
203.236.20.160	PTR	20-160.sktelecom.com
203.236.20.160	A	xtr.tos.sktelecom.com
203.236.20.161	A	t-mms.kr
203.236.20.161	A	www.t-mms.kr
203.236.20.162	PTR	20-162.sktelecom.com
203.236.20.163	PTR	20-163.sktelecom.com
203.236.20.166	A	tschool.tworld.co.kr
203.236.20.177	PTR	20-177.sktelecom.com
203.236.20.178	PTR	20-178.sktelecom.com
203.236.20.179	PTR	20-179.sktelecom.com
203.236.20.225	PTR	20-225.sktelecom.com
203.236.20.226	PTR	20-226.sktelecom.com
203.236.20.243	A+PTR	secumail2.sktelecom.com
203.236.22.55	A	skglobalphone.com
203.236.22.55	A	mobile-sk.com
203.236.29.34	A	tiis.tworld.co.kr
203.236.29.104	A	filtering3.sktelecom.com
203.236.29.105	A	filtering3.sktelecom.com
203.236.29.106	A	filtering3.sktelecom.com
203.236.29.107	A	filtering3.sktelecom.com
203.236.29.208	A	aom.sp.sktelecom.com
203.236.29.209	A	aom.sp.sktelecom.com
203.236.30.40	A	u-payment.com