Robtex

Up: 64.14.28.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 64.14.29.0/25
Down right: 64.14.29.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.14.29.8	A+PTR	ex1.flexnetoperations.com
64.14.29.8	A	ex1.subscribenet.com
64.14.29.17	A+PTR	updates.flexnetoperations.com
64.14.29.18	A+PTR	updates.flexnetoperations.com
64.14.29.19	PTR	enterprise.flexnetoperations.com
64.14.29.20	A	publisher.flexnetoperations.com
64.14.29.31	A+PTR	ibmdownload.flexnetoperations.com
64.14.29.32	A+PTR	ibmdownload.flexnetoperations.com
64.14.29.34	A+PTR	ibmdownload.flexnetoperations.com
64.14.29.35	PTR	ibmxpu.flexnetoperations.com
64.14.29.35	A	ibms-ibmxpu.flexnetoperations.com
64.14.29.38	A	sc-fnouat-01.flexnetoperations.com
64.14.29.39	A+PTR	sc-fnoweb.flexnetoperations.com
64.14.29.43	PTR	ns2.flexerasoftware.com
64.14.29.50	A+PTR	updates.installshield.com
64.14.29.51	A	services.installshield.com
64.14.29.52	A+PTR	images.installshield.com
64.14.29.53	A+PTR	updates02.installshield.com
64.14.29.56	A+PTR	globes.flexerasoftware.com
64.14.29.56	A+PTR	autodesk.globes.com
64.14.29.56	A+PTR	www.globes.com
64.14.29.57	PTR	64.14.29.57.flexnetoperations.com
64.14.29.58	PTR	www.flexerasoftware.com
64.14.29.58	PTR	www.intraware.com
64.14.29.58	PTR	www.softsummit.com
64.14.29.59	A	activationservice.installshield.com
64.14.29.61	PTR	notification.installshield.com
64.14.29.72	PTR	64.14.29.72.flexnetoperations.com
64.14.29.72	A	2020spaces.compliance.flexnetoperations.com
64.14.29.72	A	west.compliance.flexnetoperations.com
64.14.29.78	A+PTR	tls10.flexnetoperations.com
64.14.29.79	A+PTR	manager.flexnetoperations.com
64.14.29.81	A+PTR	esdhttp.flexnetoperations.com
64.14.29.81	A	64.14.29.81.flexnetoperations.com
64.14.29.82	A+PTR	esdhttp.flexnetoperations.com
64.14.29.83	PTR	esdhttp.flexnetoperations.com
64.14.29.84	A+PTR	esdhttp.flexnetoperations.com
64.14.29.85	A+PTR	customer.flexnetoperations.com
64.14.29.85	PTR	customer-ibm.flexnetoperations.com
64.14.29.85	A	harrisgeospatial.flexnetoperations.com
64.14.29.87	A+PTR	ibms-issxpu.flexnetoperations.com
64.14.29.87	A	64.14.29.87.flexnetoperations.com
64.14.29.91	A	smarttech-hub.flexnetoperations.com
64.14.29.91	A	smarttech-hub-sc.flexnetoperations.com
64.14.29.91	A	activationservice.smarttech.com
64.14.29.101	A	uat.flexnetmanager.com
64.14.29.103	A+PTR	fnocustomer.flexnetoperations.com
64.14.29.130	PTR	64.14.29.130.flexnetoperations.com
64.14.29.130	A	ibms-issupdate.flexnetoperations.com
64.14.29.130	A	update.iss.net
64.14.29.138	A+PTR	manager.subscribenet.com
64.14.29.142	A+PTR	esd.subscribenet.com
64.14.29.142	A	64.14.29.142.flexnetoperations.com
64.14.29.142	A	esdhttp.subscribenet.com
64.14.29.143	A+PTR	esd.subscribenet.com
64.14.29.143	A	esdhttp.subscribenet.com
64.14.29.143	A	esd.flexnetoperations.com
64.14.29.150	A	beacon-uat.flexnetmanager.com
64.14.29.152	A+PTR	data-uat.flexnetmanager.com
64.14.29.155	PTR	spsslm.ibm.com
64.14.29.155	PTR	lm.spss.com
64.14.29.155	A+PTR	spss-licensing.subscribenet.com
64.14.29.156	A+PTR	www.flexnetmanager.com
64.14.29.156	A	flexnetmanager.com
64.14.29.157	A+PTR	data.flexnetmanager.com
64.14.29.160	PTR	phoenix.subscribenet.com
64.14.29.161	A	beacon.flexnetmanager.com
64.14.29.180	A+PTR	faspupload.subscribenet.com
64.14.29.180	A+PTR	upload.subscribenet.com
64.14.29.199	PTR	esd.subscribenet.com
64.14.29.199	A+PTR	esd3.subscribenet.com
64.14.29.200	A+PTR	esd.subscribenet.com
64.14.29.200	A+PTR	esd4.subscribenet.com
64.14.29.200	A	esdhttp.subscribenet.com
64.14.29.201	A+PTR	faspupload.subscribenet.com
64.14.29.201	PTR	faspupload.flexnetoperations.com
64.14.29.222	PTR	accelrys.subscribenet.com
64.14.29.222	PTR	accelrysdlc.subscribenet.com
64.14.29.222	PTR	adobe.subscribenet.com
64.14.29.226	PTR	msgserv02.zerog.com
64.14.29.226	A	msgserv02.msgserv.zerog.com
64.14.29.226	A	msgserv-0001.msgserv.zerog.com
64.14.29.241	PTR	oldmanageruat.subscribenet.com
64.14.29.241	A	manageruat.subscribenet.com
64.14.29.242	A+PTR	demouat.subscribenet.com
64.14.29.242	A+PTR	uat.subscribenet.com
64.14.29.242	A	sybaseuatwebkey.subscribenet.com
64.14.29.250	A+PTR	updates.installshield.com
64.14.29.251	A+PTR	updates.installshield.com
64.14.29.252	A+PTR	updates.installshield.com