Robtex

Up: 192.243.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 192.243.80.0/22
Down right: 192.243.84.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.243.80.46	A	vendor.egtm.mhedu.com
192.243.80.46	A	vpn.egtm.mhedu.com
192.243.80.54	A	gns1.mheducation.com
192.243.80.170	A+PTR	usuyk1-is14.mheducation.com
192.243.80.170	A	box2.mheducation.com
192.243.82.35	A	glencoe.mheducation.com
192.243.82.36	A	eqhighered.mheducation.com
192.243.82.39	A	eztestonline.com
192.243.82.39	A	www.eztestonline.com
192.243.82.47	A	integrationstaging2.mhhe.com
192.243.82.50	A	mhphysicianassistants.com
192.243.82.50	A	ccu2e.com
192.243.82.50	A	hurststheheart.com
192.243.82.65	A	*.sratechknowledge.com
192.243.82.65	A	sratechknowledge.com
192.243.82.65	A	www.sratechknowledge.com
192.243.82.82	A	www.edmesh.com
192.243.82.94	A	digitalsuccessacademy.com
192.243.82.94	A	create.mheducation.com
192.243.82.94	A	mcgraw-hillshop.ca
192.243.82.112	A	createwp.customer.mheducation.com
192.243.82.113	A	cwqa.mheducation.com
192.243.82.114	A	novellaqalive2.mheducation.com
192.243.82.181	A	gwprod.soa.mheducation.com
192.243.82.207	A	mheielts6practicetests.com
192.243.82.221	A	createqa-sc.mheducation.com
192.243.82.222	A	createqalive-sc.mheducation.com
192.243.83.1	A	mcgraw-hill.com.sg
192.243.83.1	A	asia-mcgraw-hill.sg
192.243.83.1	A	mcgraw-hill.sg
192.243.83.2	A	mcgraw-hill.com.tw
192.243.83.8	A	mhe-elt.com
192.243.83.8	A	mcgraw-hill.es
192.243.83.8	A	mcgraw-hill.pt
192.243.83.9	A	mcgraw-hill.com.mx
192.243.83.17	A	mhe-cyoa.com
192.243.83.17	A	www.mhe-cyoa.com
192.243.83.19	A	mhes-india.com
192.243.83.30	A	mcgrawhill.ca
192.243.83.30	A	myebook.ca
192.243.83.30	A	mhrliteracy.ca
192.243.83.36	A	www.socsciresearch.com
192.243.83.40	A	connect.mheducation.ca
192.243.83.61	A	highschoolequivalency.com
192.243.83.61	A	mheonline.com
192.243.83.86	A	mhcontemporaryelt.com
192.243.83.86	A	ntcpg.com
192.243.83.86	A	ntc-cb.com
192.243.83.92	A	activebioblog.com
192.243.83.173	A	catalogo.mcgraw-hill.it
192.243.83.173	A	biomedica.mcgraw-hill.it
192.243.83.173	A	www.psicologia.mcgraw-hill.it
192.243.83.177	A	www.expertedge.com
192.243.83.177	A	www.learningtrianglepress.com
192.243.83.177	A	*.electronicsbookclub.com
192.243.83.196	A	advancetracker.com
192.243.83.196	A	www.advancetracker.com
192.243.83.197	A	auth.k12.mhedu.com
192.243.83.198	A	jrnstudent.com
192.243.83.200	A	mhe.passkeylearning.com
192.243.83.207	A	1stepdr.mheducation.com
192.243.84.161	A	createqalive.mheducation.com