Robtex

Up: 167.72.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 167.73.0.0/17
Down right: 167.73.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
167.73.1.4	A	ns1.spectrumhealth.org
167.73.1.84	A	tan2.spectrumhealth.org
167.73.1.124	A	careeverywhereprod.spectrumhealth.org
167.73.1.204	A	exp-e2.collab.spectrumhealth.org
167.73.2.21	A	gslb4.spectrumhealth.org
167.73.8.220	A	guest2.spectrumhealth.org
167.73.15.2	PTR	host-2-15-73-167.ussignalcom.net
167.73.15.11	A	arrive.spectrumhealth.org
167.73.15.12	A	mdm.spectrumhealth.org
167.73.15.14	A	mobilemail1.spectrumhealth.org
167.73.15.31	A	crl.spectrum-health.org
167.73.15.39	A	smtp.mmpc.com
167.73.15.39	A	ocallaghanfamilypractice.com
167.73.15.39	A	wmheart.com
167.73.17.4	A	ns2.spectrumhealth.org
167.73.17.156	A	tan1.spectrumhealth.org
167.73.17.204	A	exp-e1.spectrumhealth.org
167.73.18.12	A	fpepas01.spectrumhealth.org
167.73.18.21	A	gslb3.spectrumhealth.org
167.73.18.44	A	fasttrackorientation.spectrumhealth.org
167.73.24.220	A	guest1.spectrumhealth.org
167.73.25.7	A	awmail02.spectrumhealth.org
167.73.25.9	A	awmail04.spectrumhealth.org
167.73.30.15	A	sso.spectrumhealth.org
167.73.31.10	A	webmail.spectrumhealth.org
167.73.31.10	A	webmail.spectrum-health.org
167.73.31.17	A	mydesktop.spectrumhealth.org
167.73.31.27	A	connect.spectrum-health.org
167.73.31.29	A	applications.spectrum-health.org
167.73.31.39	A	smtp.mmpc.com
167.73.31.39	A	threestepmedicare.com
167.73.31.39	A	ocallaghanfamilypractice.com
167.73.96.84	A	esharepacs2.spectrum-health.org
167.73.98.20	A	webmail.spectrum-health.org
167.73.98.42	A	smtp.mmpc.com
167.73.98.44	A+PTR	threestepmedicare.com
167.73.98.44	PTR	www.threestepmedicare.com
167.73.98.46	A	ocallaghanfamilypractice.com
167.73.110.31	A	dcntmta02.spectrum-health.org
167.73.110.35	A+PTR	mail1.spectrum-health.org
167.73.110.87	A	gss2.spectrum-health.org
167.73.110.87	A	gss1.spectrum-health.org
167.73.110.125	A	connect.spectrum-health.org
167.73.111.2	A	applications.spectrum-health.org
167.73.111.28	A	wmheart.com
167.73.111.44	A	myspectrumhealth.org
167.73.111.66	A	our.spectrum-health.org
167.73.112.35	A+PTR	mail2.spectrum-health.org
167.73.112.35	A+PTR	mail2.spectrumhealth.org
167.73.112.87	A	gss2.spectrum-health.org
167.73.112.87	A	gss1.spectrum-health.org
167.73.112.125	A	connect.spectrum-health.org
167.73.113.2	A	applications.spectrum-health.org
167.73.113.4	PTR	host-4-113-73-167.ussignalcom.net
167.73.113.4	A	devoschildrensfoundation.org
167.73.113.9	A+PTR	meijerheartcenter.com
167.73.113.9	A+PTR	meijerheartcenter.org
167.73.113.66	A	our.spectrum-health.org