Robtex

Up: 37.98.234.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 37.98.234.0/25
Down right: 37.98.234.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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