Robtex

Up: 135.11.52.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 135.11.53.0/25
Down right: 135.11.53.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
135.11.53.27	A+PTR	app8.avaya.com
135.11.53.53	A	origin-support.avaya.com
135.11.53.54	A+PTR	avayadatalicensing.com
135.11.53.54	A+PTR	nortellicensing.com
135.11.53.54	A+PTR	www.avayadatalicensing.com
135.11.53.63	A+PTR	origin-www.avaya.com
135.11.53.67	A+PTR	login-us1.avaya.com
135.11.53.67	A+PTR	login.avaya.com
135.11.53.69	A	pmtool.avaya.com
135.11.53.72	A	bpcc.avaya.com
135.11.53.76	A+PTR	earlyrenewals.avaya.com
135.11.53.81	A	grt.avaya.com
135.11.53.82	A	origin-support.avaya.com
135.11.53.85	A	plds.avaya.com
135.11.53.87	PTR	avaya-tenovis.be
135.11.53.87	PTR	tenovis.be
135.11.53.87	PTR	avayaacademia.com