Robtex

Up: 37.98.224.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 37.98.232.0/22
Down right: 37.98.236.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
37.98.232.2	PTR	vl500.cor-001a.ams3.service-now.com
37.98.232.3	PTR	ns3.servicenow.com
37.98.232.3	A	ns3.service-now.com
37.98.232.11	A	partners.servicenow.com
37.98.232.12	A+PTR	pat-37-98-232-12.service-now.com
37.98.232.12	A	c.spf.service-now.com
37.98.232.12	A	outbound08.service-now.com
37.98.232.20	PTR	gi0-0.vpn-001.ams3.service-now.com
37.98.232.26	A+PTR	outbound13.service-now.com
37.98.232.26	A	c.spf.service-now.com
37.98.232.26	A	spf.pearson.com
37.98.232.35	PTR	ns3.service-now.com
37.98.232.99	A	it4usprod.service-now.com
37.98.232.99	A	espglobal.service-now.com
37.98.232.99	A	atptech.service-now.com
37.98.232.100	PTR	prod.ams3.service-now.com
37.98.232.100	A	hclgbp.service-now.com
37.98.232.102	PTR	subprod.ams3.service-now.com
37.98.232.115	A	servicenow.com
37.98.232.115	A	demo.service-now.com
37.98.232.115	A	service-now.com
37.98.233.100	PTR	prod.lhr1.service-now.com
37.98.234.2	PTR	vl500.cor-001a.gva2.service-now.com
37.98.234.2	A	c.spf.service-now.com
37.98.234.3	PTR	vl500.cor-001b.gva2.service-now.com
37.98.234.26	A+PTR	outbound09.service-now.com
37.98.234.26	A	c.spf.service-now.com
37.98.234.26	A	extmail.reece.com.au
37.98.234.100	PTR	prod.gva2.service-now.com
37.98.234.100	A	amcor.service-now.com
37.98.234.100	A	partnersgroup.service-now.com
37.98.234.102	PTR	subprod.gva2.service-now.com
37.98.234.130	PTR	vl502.cor-001a.gva2.service-now.com
37.98.234.131	PTR	vl502.cor-001b.gva2.service-now.com
37.98.234.134	PTR	dci-001a-pub.gva2.service-now.com
37.98.234.134	PTR	gi0-0.dci-001a.gva2.service-now.com
37.98.234.135	PTR	gi0-0.dci-001b.gva2.service-now.com
37.98.234.157	PTR	gi0-0.vpn-001.gva2.service-now.com
37.98.235.2	PTR	vl500.cor-001a.zrh1.service-now.com
37.98.235.2	A	c.spf.service-now.com
37.98.235.12	PTR	pat-37-98-235-12.service-now.com
37.98.235.26	A+PTR	outbound10.service-now.com
37.98.235.26	A	c.spf.service-now.com
37.98.235.26	A	extmail.reece.com.au
37.98.235.100	PTR	prod.zrh1.service-now.com
37.98.235.100	A	agentil.service-now.com
37.98.235.100	A	softwareone.service-now.com
37.98.235.157	PTR	gi0-0.vpn-001.zrh1.service-now.com