Robtex

Up: 111.221.20.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 111.221.20.0/24
Down right: 111.221.21.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
111.221.20.134	A+PTR	sgsphealth.com
111.221.20.141	PTR	p_bspos_f_r_1~1.sin-f89-bspos-2a.ntwk.msn.net
111.221.20.145	A	frugaltech.co
111.221.20.149	A	techassist.co.nz
111.221.20.150	A	petrel.biz
111.221.20.150	A	nprgroup.com.au
111.221.20.151	A	creativetuesday.co.nz
111.221.20.152	A	frontforge.com
111.221.20.200	A	macchina-2008.com
111.221.20.200	A	saesolsoft.com
111.221.20.200	A	nsi.jp
111.221.20.201	PTR	sg1.mail.sharepointonline.com
111.221.20.210	A	unitedcreations.com.sg
111.221.20.210	A	krane.com.au
111.221.20.210	A	tairaseiki.com
111.221.20.220	A	rscommercial.com.au
111.221.20.225	PTR	sg.mail.sharepointonline.com
111.221.21.30	PTR	mrsin02.com
111.221.21.41	A	*.1399.r.msn.com
111.221.21.48	A	arc2.msn.com
111.221.21.49	A	arc2.msn.com
111.221.21.78	A+PTR	sg1aqu.atdmt.com
111.221.21.78	A	view.atdmt.com.nsatc.net
111.221.21.78	A	switch.atdmt.com.nsatc.net
111.221.21.79	A	view.atdmt.com.nsatc.net
111.221.21.79	A	switch.atdmt.com.nsatc.net
111.221.21.80	A	view.atdmt.com.nsatc.net
111.221.21.103	A	dns4.azure.net
111.221.21.132	PTR	port-channel1001-401.sin-x7x-srch-1b.ntwk.msn.net
111.221.21.143	PTR	msnbot-111-221-21-143.search.msn.com
111.221.21.145	PTR	msnbot-111-221-21-145.search.msn.com
111.221.21.146	PTR	msnbot-111-221-21-146.search.msn.com
111.221.21.149	PTR	msnbot-111-221-21-149.search.msn.com
111.221.21.154	PTR	msnbot-111-221-21-154.search.msn.com
111.221.21.161	PTR	msnbot-111-221-21-161.search.msn.com
111.221.21.166	PTR	msnbot-111-221-21-166.search.msn.com
111.221.21.170	PTR	msnbot-111-221-21-170.search.msn.com
111.221.21.174	PTR	msnbot-111-221-21-174.search.msn.com
111.221.21.196	PTR	port-channel1001-501.sin-x7x-srch-1b.ntwk.msn.net
111.221.21.210	PTR	msnbot-111-221-21-210.search.msn.com
111.221.21.217	PTR	msnbot-111-221-21-217.search.msn.com
111.221.21.233	PTR	msnbot-111-221-21-233.search.msn.com