Robtex

Up: 199.244.96.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 199.244.100.0/23
Down right: 199.244.102.0/23

IP	Type	Hostname
199.244.101.87	A+PTR	lb-tw-prod1.mci01.shoretel.com
199.244.101.87	A	tw-prod1.us1-geo.shoretel.com
199.244.101.88	A+PTR	lb-auth-alpha1.mci01.shoretel.com
199.244.101.88	A	auth-alpha1.us1.shoretel.com
199.244.101.89	A+PTR	lb-auth-prod1.mci01.shoretel.com
199.244.101.89	A	auth-prod1.us1-geo.shoretel.com
199.244.101.113	PTR	messaging.us1.shoretel.com.us1.shoretel.com
199.244.101.113	A+PTR	messaging.us1.shoretel.com
199.244.101.114	A+PTR	messaging.us1.shoretel.com
199.244.101.115	A+PTR	messaging.us1.shoretel.com
199.244.101.123	A	auth0.ns.corvisa.com
199.244.101.128	A+PTR	auth-geo0.ns.corvisa.com
199.244.101.220	A+PTR	appsmtp2-mci01.mta.corvisa.com
199.244.101.220	A	appsmtp2-mci.mta.corvisa.com
199.244.101.221	A	entsmtp1-mci.mta.corvisa.com
199.244.102.6	PTR	lb-mktg-corvisa.ord01.corvisa.com
199.244.102.6	A	www.corvisa.com
199.244.102.6	A	corvisa.com
199.244.102.20	A	novastarfinancial.com
199.244.102.21	A	communityincometax.com
199.244.102.22	A	ivrcentral.com
199.244.102.22	A	corvisacloud.com
199.244.102.23	PTR	novationcompanies.com
199.244.102.23	PTR	joincit.com
199.244.102.123	A	auth1.ns.corvisa.com
199.244.102.123	A	auth2.ns.corvisa.com
199.244.102.123	A	ns2.kcitsvc.com
199.244.102.128	PTR	auth1.ns.corvisa.com
199.244.102.128	A+PTR	auth-geo1.ns.corvisa.com
199.244.102.219	A	appsmtp1-mci.mta.corvisa.com
199.244.102.241	A	langoats.com
199.244.102.241	A	milwaukeerallyvbc.com
199.244.102.241	A	mbrez.com
199.244.102.242	A	oldmail.mbrez.com