Robtex

Up: 206.127.152.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 206.127.152.0/23
Down right: 206.127.154.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
206.127.152.1	PTR	206-127-152-1.ncsoft.com
206.127.152.65	PTR	206-127-152-65.ncsoft.com
206.127.153.22	PTR	206-127-153-22.ncsoft.com
206.127.153.84	PTR	aion.patcher.ncsoft.com
206.127.153.136	PTR	boards.cityofvillains.com
206.127.153.137	PTR	206-127-153-137.ncsoft.com
206.127.153.138	PTR	206-127-153-138.ncsoft.com
206.127.153.150	PTR	206-127-153-150.plaync.com
206.127.153.150	A	china-arenanetworks.com
206.127.153.151	PTR	206-127-153-151.ncsoft.com
206.127.153.151	A	guildwarsutopia.com
206.127.153.151	A	guildwar.net
206.127.153.153	PTR	206-127-153-153.ncsoft.com
206.127.153.153	A	discovertabularasa.com
206.127.153.160	PTR	206-127-153-160.ncsoft.com
206.127.153.160	A	plaync.us
206.127.153.160	A	www.plaync.us
206.127.153.162	PTR	206-127-153-162.plaync.com
206.127.153.166	PTR	206-127-153-166.plaync.com
206.127.153.166	A	dungeonrunners.org
206.127.153.166	A	dungeonrunner.net
206.127.153.172	PTR	206-127-153-172.ncsoft.com
206.127.153.174	PTR	206-127-153-174.ncsoft.com
206.127.153.174	A	ladder.guildwars.com
206.127.153.178	PTR	206-127-153-178.ncsoft.com
206.127.153.178	A	arenanetworks.com
206.127.153.183	PTR	206-127-153-183.plaync.com
206.127.153.183	A	www.guildwars2wiki.com
206.127.153.183	A	guildwars2wiki.com
206.127.153.206	PTR	206-127-153-206.ncsoft.com
206.127.153.206	A	www.rgtr.com
206.127.153.206	A	rgtr.com
206.127.153.227	PTR	206-127-153-227.ncsoft.com
206.127.154.1	PTR	206-127-154-1.ncsoft.com
206.127.154.10	A	eu-bns.ncsoft.com
206.127.154.10	A	eu-bns.gtm.ncsoft.com
206.127.154.11	A	eu-bnsmarket.ncsoft.com
206.127.154.11	A	eu-bnsmarket.gtm.ncsoft.com
206.127.154.12	PTR	206-127-154-12.ncsoft.com
206.127.154.12	A	eu-gamepic.gtm.ncsoft.com
206.127.154.13	PTR	206-127-154-13.ncsoft.com
206.127.154.13	A	eu-search.gtm.ncsoft.com
206.127.154.13	A	eu-search.ncsoft.com
206.127.154.15	PTR	206-127-154-15.ncsoft.com
206.127.154.130	PTR	206-127-154-130.ncsoft.com
206.127.155.2	PTR	206-127-155-2.ncsoft.com
206.127.155.34	PTR	206-127-155-34.ncsoft.com
206.127.155.52	PTR	206-127-155-52.ncsoft.com
206.127.155.115	PTR	206-127-155-115.plaync.com
206.127.155.162	PTR	206-127-155-162.ncsoft.com
206.127.155.162	A	ncdns01.ncsoft.com
206.127.155.162	A	ncwdns01.ncsoft.com
206.127.155.163	PTR	206-127-155-163.ncsoft.com
206.127.155.168	A	listserv.plaync.com
206.127.155.168	A	listserv.ncsoft.com
206.127.155.194	PTR	206-127-155-194.ncsoft.com
206.127.155.194	A	ncftp07.plaync.com
206.127.155.195	A	ncftp09.plaync.com
206.127.155.196	A	ncftp11.plaync.com
206.127.155.198	PTR	206-127-155-198.ncsoft.com
206.127.155.200	PTR	206-127-155-200.ncsoft.com
206.127.155.203	PTR	206-127-155-203.ncsoft.com
206.127.155.208	PTR	206-127-155-208.ncsoft.com
206.127.155.210	PTR	206-127-155-210.ncsoft.com
206.127.155.212	PTR	206-127-155-212.ncsoft.com
206.127.155.213	PTR	206-127-155-213.ncsoft.com
206.127.155.214	PTR	206-127-155-214.ncsoft.com
206.127.155.227	A	ncftp01.plaync.com
206.127.155.235	PTR	206-127-155-235.ncsoft.com
206.127.155.235	A	ncftp02.plaync.com