Robtex

Up: 52.112.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 52.112.0.0/17
Down right: 52.112.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
52.112.9.91	A	buildingmaterialchina.com
52.112.9.159	A	external.ap.messenger.online.lync.com
52.112.19.128	A	j2jtb.com
52.112.64.11	A	sip.mt-opticom.com
52.112.64.11	A	sipdir.online.lync.com
52.112.64.11	A	sipfed0a.online.lync.com
52.112.64.12	A	dataedgebl20a.online.lync.com
52.112.64.75	A	sipfed0a.online.lync.com
52.112.64.140	A	sipdir.online.lync.com
52.112.65.11	A	sippoolco24a01.infra.lync.com
52.112.65.12	A	webpoolco24a01.infra.lync.com
52.112.65.13	A	sippoolco24a02.infra.lync.com
52.112.65.14	A	webpoolco24a02.infra.lync.com
52.112.65.27	A	sipdir.online.lync.com
52.112.65.203	A	sipfed3a.online.lync.com
52.112.66.11	A	sip.xynics.com
52.112.66.11	A	sipfed3a.online.lync.com
52.112.66.11	A	sip.veo.fi
52.112.67.10	A	sippoolblu2a02.infra.lync.com
52.112.67.11	A	webpoolblu2a02.infra.lync.com
52.112.67.12	A	sippoolblu2a03.infra.lync.com
52.112.67.13	A	webpoolblu2a03.infra.lync.com
52.112.67.51	A	sipdir.online.lync.com
52.112.67.53	A	mediaedge2a.online.lync.com
52.112.67.77	A	mediaedge2a.online.lync.com
52.112.67.203	A	sipdir.online.lync.com
52.112.68.77	A	mediaedge0m.online.lync.com
52.112.68.108	A	dataedgedm20m.online.lync.com
52.112.68.109	A	mediaedge0m.online.lync.com
52.112.70.78	A	mediaedge2a.online.lync.com
52.112.80.217	A+PTR	webpoolbl20r02.infra.lync.com
52.112.80.217	A	ring0noammeetings.resources.lync.com
52.112.80.217	A	api.skypeforbusiness.com
52.112.80.219	A+PTR	webpoolbl20r03.infra.lync.com
52.112.80.219	A	noammeetings.resources.lync.com
52.112.80.221	PTR	webpoolbl20r04.infra.lync.com
52.112.80.221	A	noammeetings.resources.lync.com
52.112.81.25	A+PTR	webpooldm20r02.infra.lync.com
52.112.81.25	A	ring0noammeetings.resources.lync.com
52.112.81.25	A	api.skypeforbusiness.com
52.112.81.27	A	noammeetings.resources.lync.com
52.112.81.29	PTR	webpooldm20r04.infra.lync.com
52.112.109.4	A	sipfeded1.online.lync.com
52.112.109.6	A	webdired1.online.lync.com
52.112.109.8	A	sippoolwu23a01.westus2.cloudapp.azure.com
52.112.109.9	A	webpoolwu23a01.westus2.cloudapp.azure.com
52.112.133.36	A	external.ap.messenger.online.lync.com
52.112.192.11	A	sipfed2e.online.lync.com
52.112.192.11	A	aurus.co.th
52.112.192.12	A	dataedgeam42e.online.lync.com
52.112.192.13	A	mediaedge2e.online.lync.com
52.112.192.14	A	aurus.co.th
52.112.192.75	A	sipdir.online.lync.com
52.112.192.75	A	sipfed2e.online.lync.com
52.112.192.77	A	mediaedge2e.online.lync.com
52.112.192.139	A	aurus.co.th
52.112.192.142	A	aurus.co.th
52.112.193.11	A	sippoolam30e20.infra.lync.com
52.112.193.12	A	webpoolam30e20.infra.lync.com
52.112.193.13	A	sipfed0e.online.lync.com
52.112.193.14	A	dataedgeam30e.online.lync.com
52.112.193.15	A	mediaedge0e.online.lync.com
52.112.193.75	A	sipfed0e.online.lync.com
52.112.193.77	A	mediaedge0e.online.lync.com
52.112.193.203	A	sipfed0e.online.lync.com
52.112.193.205	A	mediaedge0e.online.lync.com
52.112.194.10	A	sippooldb41e11.infra.lync.com
52.112.194.11	A	sipfed1e.online.lync.com
52.112.194.11	A	sip.nctcog.org
52.112.194.11	A	sip.nstda.or.th
52.112.194.75	A	sipfed1e.online.lync.com
52.112.195.17	A	sippooldb41m01.infra.lync.com
52.112.195.174	A+PTR	db5ae.027d.dedicated.lync.com
52.112.196.12	A	webdir3e.online.lync.com
52.112.196.28	A	webpoolam33e06.infra.lync.com
52.112.196.31	A	sippoolam33e09.infra.lync.com
52.112.196.34	A	webpoolam33e09.infra.lync.com
52.112.208.213	A+PTR	webpoolam30r04.infra.lync.com
52.112.208.213	A	emeameetings.resources.lync.com
52.112.209.21	A+PTR	webpooldb40r04.infra.lync.com
52.112.209.21	A	emeameetings.resources.lync.com
52.112.209.102	A	dataedgedb51e.online.lync.com
52.112.209.103	A	mediaedge0e.online.lync.com
52.112.234.19	A	ethereal-engineering.com
52.112.234.19	A	bhcnetworks.com
52.112.236.7	A	webpoolne0ed230.northeurope.cloudapp.azure.com
52.112.236.13	A	webdired2.online.lync.com
52.112.237.3	A	webdired4.online.lync.com